Showing 155 events within 100 km in the next 365 days. Page 5 of 8.
The pregame is over—it's time for kickoff!
You've trained through the cold, conquered sore muscles, survived the chafing, and earned every mile. Now it's time to lace up and put your game day speed to the test at Denver's Super Bowl 5K Run/Walk!
Join us at Washington Park for a fun-filled morning of friends, fitness, and fan pride. Throw on your favorite jersey or your wildest football-themed outfit, gather your teammates, and get ready to run, walk, and celebrate.
RACE HIGHLIGHTS
🥰Participants receive an awesome long-sleeve shirt!
🏈40 Yard Dash Competition
🏃♂️Touchdown! Free Kids 200 meter dash
🔮SuperBowl Prediction Contest
🤪Craziest Fan Costume Contest
🎉Tailgate Zone
📸Free Photos
🐱🏍Special appearance by TD Run, our MVP mascot!
🥇Custom Finisher Medal!!!
Packet Pickup
Advance pick-up on Saturday, February 6, 2027. Time & Location TBD
Race day pick-up opens at 8:00 a.m.
SCHEDULE OF EVENTS
8:00 AM - Registration/Packet Pickup opens
8:40 AM - Touchdown! Kids Fun Run Start (200 meters)
9:00 AM - 5K Run/Walk Starts
10:00 AM - Awards & Costume Contest
The Super Bowl 5K Run/Walk is part of the RunDenver Series.
Welcome to the Windsor Marathon. This event starts and ends at The Island at Pelican Lakes in Water Valley, with a great after party including breakfast, drinks and music. Tour beautiful Windsor on a variety of terrain, through golf courses, along the Poudre River trail, up and down hills, and event single track dirt trails for the marathon.
There's a distance for everyone with a kids fun run, 5k, 10k, half and full marathon. This year's races benefits Banner MD Anderson Cancer Center and the Weld RE-4 Foundation. Create a team and let's show our strength in numbers!
Join Denver’s Greatest Thanksgiving Day Tradition
Mile High United Way is excited to celebrate the 53rd Mile High United Way Turkey Trot on Nov. 26, 2026 in Washington Park with all of you – the runners and volunteers who help make this Denver’s Greatest Thanksgiving Tradition.
Your participation directly supports the critical work of Mile High United Way, providing families with high-quality early learning so kids begin school ready to succeed, connecting young adults to education and workforce development opportunities and ensuring families can meet their basic needs.
Register today and help create change in our community!
Your Registration Includes:
Official Collectible 2026 Turkey Trot T-shirt (sizes YS – 3XL)
Race Bib with Professional Timing (Only the 4 Mile is timed)
Free Digital Photos
Pre & Post-Race Festivities for the Whole Family!
Registration Fees:
Individual (4 Mile) - $55.24* (includes $5.24 in fees)
Lil Gobbler Fun Run (1 Mile) - $55.24* (includes $5.24 in fees)
Military Individual - $55.24** (includes $5.24 in fees)
Please note, base price will increase by $5 on November 1st, 20th & 26th.
*$5 discount at checkout for Youth 12 & Under, & Seniors 60+
**Please provide active Military ID upon request in step 2
Welcome to the Colorado 24 Hour Run! We aim to provide a fun, welcoming race experience that allows everyone to find a challenge, no matter where you’re at on your running journey. Want to see how far you can go in 6, 12 or 24 hours? Or achieve a new furthest distance? What about setting your fastest marathon, 50K or more? You’ve got the time and opportunity with a fully supported 1mi dirt loop that is easy on the eyes and feet. Come run for a day and/or a night and cheer on others as we strive together for our personal bests.
We aspire to not only offer a first-class running experience on the most scenic flat one-mile dirt loop you’ll find in Colorado, but also a top-notch post-race experience that will leave your bellies full and the stories flowing.
Start: Colorado Youth Outdoors - Swift Ponds Campus, Fort Collins, CO.
Duration: 24 Hours, 12 Hours, 6 Hours
Elevation: 4,826'
Terrain: 100% dirt road
Fauna: Raptors, Cranes, Geese, Ducks, Largemouth Bass, Catfish, Perch, Bluegill
Registration Cap: 300
Date: Nov 7-8, 2026
Course Open: 8:00am - 8:00am
Pertaining to the mid-race change from Daylight Savings Time to Standard Time, all race clocks will stay on race time (aka DST) until the conclusion of the event.
Welcome to the Colorado 24 Hour Run! We aim to provide a fun, welcoming race experience that allows everyone to find a challenge, no matter where you're at on your running journey. Want to see how far you can go in 6, 12 or 24 hours? Or achieve a new furthest distance? What about setting your fastest marathon, 50K or more? You've got the time and opportunity with a fully supported 1mi dirt loop that is easy on the eyes and feet. Come run for a day and/or a night and cheer on others as we strive together for our personal bests.
We aspire to not only offer a first-class running experience on the most scenic flat one-mile dirt loop you'll find in Colorado, but also a top-notch post-race experience that will leave your bellies full and the stories flowing.
Trail Sisters Approved
Registration
24 Hour Race Fees:
Dec 15 - April 30: $150 + $10.00 fee
May 1 - July 31: $175 + $11.50 fee
August 1 - Nov 7: $200 + $13.00 fee
12 Hour Race Fees:
Dec 15 - April 30: $125 + $8.50 fee
May 1 - July 31: $145 + $9.70 fee
August 1 - Nov 7: $165 + $10.90 fee
6 Hour Race Fees:
Dec 15 - April 30: $90 + $6.40 fee
May 1 - July 31: $105 + $7.30 fee
August 1 - Nov 7: $125 + $8.50 fee
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24 Hour RELAY Race Fees:
Dec 15 - April 30: $225 + $14.50 fee
May 1 - July 31: $250 + $13.50 fee
August 1 - Nov 7: $275 + $14.75 fee
12 Hour RELAY Race Fees:
Dec 15 - April 30: $200 + $13.00 fee
May 1 - July 31: $225 + $14.50 fee
August 1 - Nov 7: $250 + $13.50 fee
6 Hour RELAY Race Fees:
Dec 15 - April 30: $175 + $11.50 fee
May 1 - July 31: $200 + $13.00 fee
August 1 - Nov 7: $225 + $14.50 fee
All Relay Team Members must fill out the registration form & sign the waiver, up to a maximum of 6 team members. First person to register / create the team pays the registration fee, and there is no additional fee for additional members. All team members will receive a shirt, finisher award and (of course) burgers, beer, aid & more.
Looking to register as a family for a relay? Colorado Youth Outdoors is all about families recreating together in the outdoors, and we're fully on board with that! If you have a team all from the same household, we'd love to give you 25% off your relay registration. Contact us before you register to get that code.
What You Get in Return for Your Registration Fee
The most scenic flat 1 Mile loop in Colorado
Enthusiastic, knowledgeable race staff & volunteers
Gender specific race T-shirt
Finisher award (including belt buckles for individual 100mi+ achievers!)
Free race photos
Full-Service Hot Food Aid Station
Medical coverage
Real-time results
Fundraising
Colorado Youth Outdoors
Our host, Colorado Youth Outdoors, is a 501(c)3 nonprofit organization. They are all about building relationships through outdoor recreation. We strongly encourage all of our entrants to raise support for CYO as part of their race. Ask friends and family to challenge you with a per-lap donation, or simply make a one-time gift. Runners can also donate as part of their registration.
Recognition and awards will be given for the three top fundraisers overall, as well as those achieving $200, $500 and $1000 tiers.
Gnar Runners will be donating $0.05 for every lap completed by every runner - so get your booty moving!
Colorado Youth Outdoors is where Relationships grow. They teach archery, survival skills, spin & fly fishing, fly tying and shooting sports to teens and their adults. While you and your teen are outside having fun together, they have discussions around participation, appreciation, communication, and dedication. These aren’t just words; they’re action items for building relationships. The goal: Time Well Spent building healthy lifelong relationships. CYO is a 501(c)(3) nonprofit.
Swift Ponds (CYO's campus) is a beautiful 220 acre property on the east side of I-25 and about a mile south of Harmony road in Fort Collins Colorado. The Swift Ponds property was purchased by Louis Swift in 1969. Louis Swift was a visionary who had a dream of turning his newly purchased property into a great fishery, sanctuary for wildlife and an educational and recreational property for the community.
Transfer Credit & Distance Change Policy
If you are not able to race, we will be able to offer a race transfer credit that can be applied to any future Gnar Runners race (valid for 12 months). Credit deadlines are as follows:
Until April 30: 100% credit of registration (excluding RunSignup fees)
May 1 - July 31: 75% credit of registration (excluding RunSignup fees)
August 1 - Nov 6: 50% credit of registration (excluding RunSignup fees)
Deferrals:
Log in to your RunSignup account
Go to Profile, Upcoming Races, Colorado 24 Hour Run, Manage Registration
At the bottom of the page, select “Defer Registration” and follow the automated process.
While RunSignup will prompt you to, you DO NOT have to immediately choose which race to apply your credit to. Once you hit "Confirm Deferral" and see the "Your registration has been deferred" message, your credit is in the system and will be valid for one year past the event date.
Duration Switch:
Log on to your RunSignup account
Go to Profile -> Upcoming Races -> Colorado 24 Hour Run -> Manage Registration
At the top, click the link to "Transfer Event"
Follow the steps to register for the race in the new duration
Runners stepping up in duration can pay the additional registration fee to upgrade to the marathon race. There is no charge for runners dropping down in duration.
The online deadline to transfer is Thursday (11/6) at midnight. It can also be done in person at packet pickup.
Runners who switch durations on Thursday or before will be eligible for awards in their new race duration category. Race day switches are not eligible for awards.
Cancellation Policy
Entries are non-refundable. Entries are non-transferable, except for transfers via the wait list. In the event the race is cancelled due to extreme weather, fire, disease or for some other unforeseeable event, we cannot offer refunds or credits.
Course & Aid Stations
The amount of vertical/gain loss on the loop is ZERO (or at least it's so small that any mapping software can't get beyond the margin of error!)
Runners will reverse direction on the loop every 6 hours. Reversal notices will be posted at the start/finish. When you hear a reversal announced, COMPLETE THE LOOP YOU'RE ON before changing direction.
The course is U.S.A.T.F. certified at 1.0002mi (ID# CO240003MWC). The race is U.S.A.T.F. sanctioned, ID# 155337
Course Map
Colorado 24 Hour Run Map
Elevation Profile
Colorado 24 Hour Run Elevation Profile
Course GPX File
Aid Stations
The Start/Finish pavilion will have a full-service aid station, available every 1 mile lap. Vegetarian, vegan, and gluten free options will be available constantly. Options will include:
Gnarly Nutrition sports drink
Hammer Nutrition gels
Water and ice
Salty snacks: Pretzels, potato chips, corn chips
Fruit: Oranges and Bananas plus additional variety depending on seasonal availability
Sweets: Cookies, M&M's, Gummy bears
Soda: Coke, Ginger Ale
Hot Soup/Broth
Hot Drinks - Coffee, Tea, Cocoa
Hot Sandwiches/Quesadillas - Grilled Cheese, Grilled Ham & Cheese
Bacon
Burgers - Beef & Veggie with fixings
***There will be GF/Vegan alternatives for nearly all non-GF/V standard offerings. These are typically held back to save them for those who need them, so please ASK! Also note that while we will do our best to keep utensils and trays separated for these as well as common allergens, this is the backcountry and cross-contamination can occur.
While we will provide plenty of electrolyte options in drink mix and salty real foods, we deem the risks associated with salt in concentrated pill form to be more than we're comfortable providing. We won't restrict runners from using their own salt caps, but will not have them available at aid stations.
Richardson Hall (Lodge)
The CYO campus lodge (Richardson Hall) will be open for those who need a respite in a heated, indoor space during the event. Located approximately 0.2mi off the course loop at the southwest corner of the campus (opposite end of the start/finish/aid), it will have space available for crews & runners. Parking in its lot and crewing in and around the building is allowed. You're even welcome to nap inside, though we make no promises about quiet.
Runners who depart the course to visit the lodge MUST RETURN TO THE COURSE AT THE SAME POINT THEY LEFT IT (Rule #2). If a runner leaves the course and a directional change takes place while they are off course, they must finish their partial loop in the same direction they were originally traveling before reversing (Rule #3).
Unless you're planning to park at the lodge for the duration, we strongly recommend that crew should plan on parking at the main lots and walking to/from the lodge to cut down on vehicle traffic & dust.
Personal Aid Stations & Crew
Runners will be allowed to set up their own personal aid station. There is a large lot immediately across from the start/finish/aid that will be open for runners to set up in. Space is first-come, first-serve. No camping/sleeping tents are allowed; popup-style canopies are fine. Please keep your footprint to a maximum of 10'x10' in respect for your fellow runners.
Family and friends are allowed to assist their runners at any point on the loop, but may only set up a station within the Personal Aid area. Aid must be given in a generally stationary setting - walking a few paces is fine, but crews can't join their runners in traveling the full loop.
Runners or crews arriving or departing after the course opens at 8:00a on Saturday may walk on the inner (foot traffic) loop to transit between parking areas and the start/finish/aid. Please stay on the outside of the lane and give priority to runners on course.
Runners may take breaks as they choose during their race.
Toilets
There will be multiple portos at the main start/finish/aid. There will be an additional porto at roughly the halfway point of the loop. Modern bathrooms are available in Richardson Hall.
Race Rules
Race rules are designed to provide a safe and fair experience for everyone involved and to help ensure our ability to produce the race again next year. Major rule infractions by racers will result in immediate disqualification of the racer. Please do not argue with or harass our volunteers. Please direct any questions and feedback to the Race Directors on race day or contact us ahead of race day here.
Runners must cross the lap timing mat ONLY upon the completion of a full loop.
If a runner leaves the course (including to spend time in aid), THEY MUST RETURN TO THE COURSE AT THE EXACT SAME SPOT to continue.
If a runner leaves the course and a directional change takes place while they are off course, they must finish their partial loop in the same direction they were originally traveling before reversing.
Runners may start and stop their efforts at any time, taking as many or as long of breaks as they wish (even leave the campus) as long as they abide by the first three rules. Runners do not have to inform staff about breaks.
Only full laps will be counted in the runners' total. For purposes of tiebreakers, the first one to finish the last lap will be declared the winner.
RELAY TEAMS: Multiple team members may be on the track at a time, but the team will have one bib and only laps for the bib holder will count toward the team's total.
Purposeful littering is prohibited and will result in an immediate disqualification.
No short cutting.
Dogs are not allowed on Colorado Youth Outdoors campus (not even as spectators - sorry).
Fishing or other play in the campus ponds is not allowed.
Unregistered runners are not allowed on course.
Personal aid stations must be set up in the designated area by the start/finish/aid. No personal aid stations may be set up in the parking lots
No camping tents. Popup-style canopies are fine.
STRICT 15 MPH speed limit on the Colorado Youth Outdoors campus. The campus is open for race traffic only - this is a private venue and private road.
Pertaining to the mid-race change from Daylight Savings Time to Standard Time, all race clocks will stay on race time (aka DST) until the conclusion of the event.
Schedule
Saturday 10/31:
6:30a MDT: Campus opens to runners. All Packet Pickup is on-site.
7:55a MDT: Pre-Race Briefing
8:00a MDT: Course Opens - 24 / 12 / 6 Hr Mass Start
12:00p MDT: Hot Food Service Begins
2:00p MDT: 6 Hr Finish + Awards
8:00p MDT: 12 Hr Finish + Awards
Sunday 11/1:
7:00a MST: Course Closes (note time change)
7:20a MST: 24 Hour Awards
Parking & Directions
The main loop road will be divided into two lanes with a coned divider. The inside lane will be the race course - foot traffic only (10-12' wide). The outer lane will be vehicle traffic. Vehicle traffic in that lane will be one-way only, moving counter-clockwise around the loop.
The main parking lot will be in a field on the northwest corner of the loop, about 0.2mi from the start/finish/aid. The lot will be signed with lanes marked.
Overflow parking will be available on the southwest corner of the loop, about 0.5mi from the start/finish/aid. There will not be marked lanes; please use common sense.
Parking is also allowed at Richardson Hall, but unless you're planning to park at the lodge for the duration, we strongly recommend parking at the main lots and walking to/from the lodge to cut down on vehicle traffic & dust.
There will NOT be parking immediately parallel to the loop. Runners may visit their vehicles mid-loop, but CANNOT set up a personal aid station in the parking lot and MUST return to the loop at the same point they left it before continuing forward.
Driving Directions
4927 County Rd 36, Fort Collins, Colorado 80528
Santa Catch 5K, 10K and 1 Mile Kids Fun Run
Saturday December 12, 2025
Windsor Lake, Windsor CO
Start your holiday season with the joy of running, with courses around Windsor Lake and the Canal Trail. Stay warm in our wood burning Sauna and elevate your experience by hopping in the cold plunge!
All 10K & 5K participants will receive a
Santa Catch beanie, finisher medal, chip timing & Hot Cocoa Bar (kid friendly and boozy!), a visit from Santa and more.
Kids receive chip timing and a finisher medal. Proceeds from this race benefit the nonprofit
Adopt A Family- serving thousands of local families in need this holiday season.
“Howdy Folks! Welcome to Golden, where the west RUNS!”
Lace up them runnin’ shoes and join us as we celebrate the 20th Annual Golden Gallop!
The Golden Gallop rides into town on Sunday, September 20, 2026 - and you won’t want to miss the 20th on the 20th!
Golden’s biggest annual run is hittin’ the trail for its 20th year, and we’re mighty proud to keep the tradition runnin’ strong. We can’t wait to welcome folks back to our same great course through downtown, passin’ under the iconic Golden “Welcome” arch, with both the start and finish at Golden High School.
This year’s Golden Gallop will once again lead runners along our tried-and-true 5K and 10K loops, just like in years past - scenic, spirited, and full of hometown charm. So lace up, find your pace, and come celebrate 20 golden years on the run—it’s gonna be one heck of a Gallop!
This year’s Golden Gallop is packed with brand-new excitement, includin’:
🌟 NEW event: the 20K Challenge
👕 NEW long-sleeve sports performance tee—perfect for race day and beyond
🛍️ NEW store items to show off your Gallop pride
🍝 Spaghetti Dinner hosted at the Golden Hotel
→Register Today
Plus, we’ll be tippin’ our hats with special recognition for the number of Golden Gallops you’ve run, addin’ fresh excitement all along the course, and introducin’ new sponsorship levels.
Choose from these FOUR events:
5K
10K
Kids Fun Run
20K Challenge - this year only! (only the 10K will be completed and timed on race day)
Sleep In - For those that can't make it on race day or just want to sleep in
The Golden Gallop is again welcoming well behaved DOGS this year to the 5K and 10K!!
Register your dog in the "Add On" section if your dog is joining you this year.
Registered dogs will receive a Golden Gallop bandana that will be included in your race packet.
Dogs can NOT participate in the Kids Fun Run.
Runners with dogs and/or strollers must be at the back of the pack of racers at the starting line.
Other Important Info:
Packet Pick Up information available here
We are offering $150 first place; $100 second place; $50 for third place. These amounts will be for both the male and female for both the 10K and the 5K (total of 12 cash awards).
Age group awards will also be given out - Age group categories for both the 5K & 10K are as follows (M/F for all age groups: 10 and Under, 11-13, 14-19, 20-29, 30-39, 40-49, 50-59, 60-69, 70-79 and 80+)
In addition, anyone who sets a new course record will receive a $100 bonus.
We can not guarantee t-shirt size availability as we get closer to the race day (register by September 1st to guarantee t-shirt size).
The Golden Gallop is made possible due to our strong local sponsors. Here is more information if you are interested in supporting schools as a Golden Gallop sponsor!
The 2026 20th Annual Golden Gallop is sure to be a one-of-a-kind race in a one-of-a-kind town! Be there, where the west runs!
Follow us on Facebook (TheGoldenGallop) and Instagram (thegoldengallop)
The Golden Gallop is the annual fundraiser for the Golden Schools Foundation (GSF) which provides educational funding for our seven Golden neighborhood articulation schools. GSF is a 501(c)(3) formed to help encourage a high level of performance and accountability at the Golden neighborhood articulation schools. The Golden Gallop helps make it possible to provide $50,000 in support to our Golden schools on an annual basis.
Purchase a gift card in the following increments: $25, $50, $75, $100.
Come join in the celebration of the resurgence of a great community event. The Ram Run will be returning to it's traditional month. This fun and exciting event will include a 5k around the neighborhoods near Green Mountain High School. Proceeds will help benefit the Green Mountain High School Cross Country Team. The first 150 registrants will be guaranteed a t-shirt. Overall and age group awards will be given as well.
Awards
Top 3 Male
Top 3 Female
1st place in each age category: 0-9, 10-19, 20-29, 30-39, 40-49, 50-59, 60-69, 70+
The elementary school in the Green Mountain Articulation Area will get a traveling trophy.
Eligible Elementary Schools:
Foothills Elementary, Rooney Ranch, Hutchinson Elementary School, Devinny Elementary
Welcome to Severance's Glow 5K run/walk. A night run where everyone is encouraged to dress in glow in the dark material or with glow sticks! We will provide lighting on the course, a fun DJ at the start/finish line, and some glow sticks to "self decorate" before the race, but feel free to bring as many glow sticks and glow-in-the dark accessories as you'd like! The after party will have both Non-alcoholic as well as alcoholic beer/seltzers provided by High Country Beverage.
The 5k course will begin at the west baseball field at the Severance Community park, it will follow the Great Western Trail and down Ponderosa to Rangeview Elementary School and back to the Community Park.
IFRAME: https://www.youtube-nocookie.com/embed/eLMy2zVm93o?&wmode=opaque&rel=0
Come experience all that beautiful Nederland, CO has to offer at 8,236’!
Your participation directly supports TEENS, Inc. Providing opportunities through early childhood education, an alternative high school, job training, recreation and leadership development programs.
NedNed has been running for 44 years! Come and explore the best of trail running around Nederland. Our world class trails will inspire and challenge you as you take on the trail 10k or Half Marathon. Our road 5k is family (and pet) friendly and is a great way to see Nederland.
Location: Bear Creek Lake Park, 15600 W Morrison Rd, Lakewood, CO 80228
Courses: 5K, 15K, 5+15 Double, Kids 1K
5k: After an opening ~1k loop, you'll head out to cover the eastern part of the large loop.1k: The same opening loop as the 5k.10k: After a slightly longer opening loop, you'll do two of the larger, ~4.1mi loops.Double: Race the 5k, take a short break, then race the 15k.
Race Day Schedule
7:30 - Pickup and race-day reg opens8:30 - 5k start9:15 - Kids 1k start9:30 - 15k start*Approx. Races will start when prior races have finished.
Directions and Parking
Enter the park from Morrison Rd, ~1/4mi E of C470. Let the person at the toll booth know you're with the race; don't pay an entry fee. Go left at the Y after the toll booth. About a mile down the road, turn left up the steep hill to Coyote Crossing, or follow directions to additional parking.
Volunteers
Volunteers race for free at this or a future race. Help is needed at registration, parking, aid station, and finish line. Contact me if interested.
Kids 1k
The same opening loop as the 5k. Adults and older siblings can accompany the kids; you don't need to register. All kids will receive a stuffy at the finish. There will be a timing clock, but the race won't be officially timed like the other races. I used to offer this for free, but the park is charging me for each participant, so I need to charge a fee to cover my costs.
Event's current local time: 2:40 AM MT
Get ready for the Best Dam Run you'll ever do!
From your first step to your finish-line celebration, this race is packed with epic views, big accomplishments, and just the right amount of dam fun. Choose from a Half Marathon, 10K, or 5K as you race along Cherry Creek Dam with panoramic views of Denver and the Rocky Mountains surrounding you.
This is one DAM RUN you won't want to miss.
COME CRUSH THE DAM!
RACE HIGHLIGHTS
👕That Dam Run short sleeve shirt or tank top!!
📸FREE photos with Justin Beaver.
🏃🏽♀️JB's FREE Kids 200 Meter Fun Run
😋Refreshments
🎉Post-race celebration with event and series awards
🥇Custom Finisher Medal (all race distances)!!!
NEW THIS YEAR
📀THAT DAM GONG - Whatever your milestone, it's time to celebrate: your first 5K, 10K or half marathon? you completed the whole RunDenver Series? you set a PR? you FINISHED? ..hit THAT DAM GONG!
Packet Pickup
The Bear Chase Trail Race
NOTE: This is a two day race and the ultras are held on Saturday: 100K, 50 Mile, and 50K while the short distances are held on Sunday: Half Marathon, 10K, and 5K. The Bear Chase Race Endurance Festival is a 100k, 50 mile, 50k, Half Marathon and the Baby Bear 10k Trail Race at beautiful Bear Creek Lake Park, in Lakewood, CO. An excellent race for first time ultramarathoners and trail runners, runners will experience a variety of challenging terrain and sweeping panoramic views throughout the race. The course is pretty fast (by trail/ultra standards), and not overly technical. 95% of the race course is on dirt and single track trails. Approximate elevation gain: Baby Bear 10km = 230 ft. Half Marathon = 900 ft. 50km = 1,930 ft. 50 Mile = 3,400 ft. 100km = 4,250 ft. A portion of the proceeds of the race benefit the open spaces and trails of Lakewood, and our partner charities.
Welcome to The Bear Chase
Event's current local time: 2:39 AM MT
Welcome to the Blue Sky Trail Marathon & Half, Fort Collins's original and only trail marathon.
Taking place on the trails between Horsetooth Mountain Park and the Devil's Backbone Open Space, the course takes you on a north-south tour of the easternmost hogbacks of Northern Colorado's mighty Front Range.
The marathon boasts 3,500 feet of elevation gain/loss, while the half marathon checks in at 1,800 feet, and the route offers a little bit of something for everyone. It is designed to appeal to both veteran trail runners and those looking to experience their first trail racing adventure. The generous nine hour cut-off should ensure a successful day for everyone.
The course is 100% dirt and 90% sweet Colorado singletrack. The terrain ranges in difficulty from smooth dirt trail to technical rock gardens. A small portion of the route is on smooth dirt road (no motor vehicle access) and gravel bike path, with the meat of the running done on the beautiful and distinctive redstone hardpack of the Blue Sky Trail.
After the race, kick back and enjoy the always-popular barbecue and generous sponsor giveaways.
Start: Blue Sky Trailhead, Horsetooth Mountain Park. Fort Collins, Colorado
Distance: 26.7 miles (3,500') or 13.4 miles (1,800')
Min/Max Elevation: 5,300'-6,500'
Average Elevation: 5,700' Marathon
Terrain: Marathon: 22mi dirt singletrack, 3mi rocky singletrack, 2mi dirt road; Half Marathon: 13.0mi dirt singletrack, 0.5mi dirt road
Fauna: Deer, abert squirrel, golden eagle
Registration Cap: 400 Marathon / 400 Half
Time Allowance: 9 hours Marathon / 6 hours Half Marathon
Dates: Marathon: Oct 17, 2026; Half Marathon: Oct 18, 2026
Trail Sisters Approved
Registration
Fees for the 2026 Blue Sky Marathon & Half Marathon are as follows:
Marathon:
Dec 15 – Feb 28: $110 + $7.60 fee
March 1– June 30: $120 + $8.20 fee
July 1 – Oct 17: $130 + $8.80 fee
Packet Pickup: $145
Half Marathon:
Dec 15 – Feb 28: $90 + $6.40 fee
March 1– June 30: $100 + $7.00 fee
July 1 – Oct 17: $110 + $7.60 fee
What You Get in Return for Your Registration Fee:
A beautiful, challenging and well-marked course on some of the best trails in Fort Collins
Enthusiastic, knowledgeable race and aid station volunteers
Fully stocked aid stations
Free entry to Larimer County Open Space for the day
Generous Cut-Offs (Marathon: 9hrs / Half 6hrs)
Gender specific race T-shirt
Unique finisher award and overall and age group awards
Finish line meal
Waiting List
In the event that the race sells out, we will maintain a waiting list and transfer runners from the waiting list to the race roster should other runners already registered not be able to attend.
Transfer Credit Policy
If you are not able to race, we will be able to offer a race transfer credit that can be applied to any future Gnar Runners race (valid for 12 months). Credit deadlines are as follows:
Until March 31: 100% credit of registration (excluding RunSignup fees)
April 1 - July 31: 75% credit of registration (excluding RunSignup fees)
August 1 - October 15: 50% credit of registration (excluding RunSignup fees)
**In order to receive your credit, you must cancel your registration through the RunSignup registration platform.
Deferrals:
Log in to your RunSignup account
Go to Profile -> Upcoming Races -> Blue Sky -> Manage Registration
At the bottom of the page, select “Defer Registration” and follow the automated process.
While RunSignup will prompt you to, you DO NOT have to immediately choose which race to apply your credit to. Once you hit "Confirm Deferral" and see the "Your registration has been deferred" message, your credit is in the system and will be valid for one year past the event date.
Distance Switch:
Log on to your RunSignup account
Go to Profile -> Upcoming Races -> Blue Sky -> Manage Registration
At the top, click the link to "Transfer Event"
Follow the steps to register for the race in the new distance
Runners in the half marathon race can pay the additional registration fee to upgrade to the marathon race. There is no charge for marathon runners dropping down to the half marathon race.
The online deadline to transfer is Thursday (10/16) at midnight. It can also be done in person at packet pickup on Friday.
Cancellation & Refund Policy
Entries are non-refundable. Entries are non-transferable, except for transfers via the wait list. In the event the race is cancelled due to extreme weather, fire, disease or for some other unforeseeable event, we cannot offer refunds or credits.
Course & Aid Stations
Course Maps
Blue Sky Trail Marathon Course Map
Blue Sky Half Marathon Course Map
Course GPX Files
Blue Sky Marathon GPX (Current for 2025)
Blue Sky Half Marathon GPX (Current for 2025)
Elevation Profiles
Blue Sky Trail Marathon Elevation Profile Blue Sky Trail Half Marathon Elevation Profile
Marathon Aid Stations
Aid Station Mile Split Total Gain Descent Cut-Off Drop Bag Aid
Towers 4.4 4.4 1350 350 - No Fluids Only
Blue Sky (Start/Finish) 4.8 9.2 150 1150 10:00a Yes FULL
Indian Summer North 1 4.0 13.2 450 350 - No FULL
Indian Summer South 1 2.4 15.6 300 400 12:30p No FULL
Hunter Turnaround 2.3 17.9 400 250 - No Safety Only
Indian Summer South 2 2.4 20.3 250 400 1:45p No FULL
Indian Summer North 2 2.4 22.7 400 300 - No FULL
Finish 4.0 26.7 350 450 4:00p Yes FULL
Half Marathon Aid Stations
Aid Station Mile Split Total Gain Descent
Underpass 1 1.9 1.9 150 100
Indian Summer North 1 3.5 5.4 500 400
Indian Summer North 2 2.7 8.1 550 550
Underpass 2 3.5 11.6 400 500
Finish 1.9 13.4 100 150
All aid stations will offer Gnarly Nutrition Fuel2O sports drink, Hammer Gels, water and soda plus a variety salty and sweet bites, and a selection of fruit.
***There will be GF/Vegan alternatives for nearly all non-GF/V standard offerings. These are typically held back to save them for those who need them, so please ASK! Also note that while we will do our best to keep utensils and trays separated for these as well as common allergens, this is the backcountry and cross-contamination can occur.
While we will provide plenty of electrolyte options in drink mix and salty real foods, we deem the risks associated with salt in concentrated pill form to be more than we're comfortable providing. We won't restrict runners from using their own salt caps, but will not have them available at aid stations.
Time Cut-Offs
Marathon course cut-offs will be enforced at the following aid stations:
Blue Sky Aid Station (mile 9.2) at 10:00am. 3:00 total time.
Indian Summer South outbound (mile 15.6) at 12:30pm. 5:30 total time.
Indian Summer South inbound (mile 20.3) at 1:45pm. 6:45 total time.
There are no on-course cut-offs for the half marathon.
Drop Bags
Marathon runners may leave a drop bag at the Blue Sky Start/Finish to pick up at mile 9.2. We will have a tarp to set bags out. Pack your gear to stay dry in case we get any rain.
Half Marathon runners may leave a drop bag at the South Bay Start/Finish. We will have a tarp to set bags out. Pack your gear to stay dry in case we get any rain.
Please provide your own bag and keep it to a reasonable size (small duffel bag or stuff sack). Clearly label it with your name and bib number. Please do not leave any valuable items in your drop bags - volunteers are not responsible for lost items. Drop bags will not be transported to any other locations on course.
Course Marking
The courses will be well marked with pink flagging and pink pin flags. Important intersections will be supplemented with flour ground markings and directional arrows. On longer stretches of trail without intersections, confidence flagging will be placed approximately every quarter mile. Turns will be marked heavily.
Toilets
There will be ample facilities at the start/finish.
We will have an additional portable toilet at the Indian Summer North Aid.
In addition, there are park facilities that can be used in the campsite between the main Marina parking area and the start for the marathon that will be passed at marathon miles 1-2 and 8-9.
Crewing & Spectating
Half Marathon
Due to the course layout & access, there are not provisions for mid-race spectators for the half marathon.
For the Half Marathon Start/Finish, park in the South Bay parking area.
Marathon
Marathon runners are not allowed to receive assistance from crew on the course outside of the Blue Sky Start/Finish area at mile 9.2. No pacing is permitted.
Much of the marathon course is run on trails that are not easily accessible to spectators. The best viewing points are the Start/Finish line at the Blue Sky Trailhead (also marathon mile 9.2 Aid), the Soderberg Trailhead, and the Hunter Loop 18-mile turnaround.
NO Crewing is allowed at the Indian Summer North or South Aid Stations.
For the Marathon Start/Finish, park in the Marina parking area (see above) and walk over, please do not drive through or park at the start/finish.
To access the Soderberg Trailhead, from the Start/Finish, turn north on Shoreline Drive and make a left into the trailhead parking lot. If the parking lot is full, you may park in the Marina parking area and walk north through the campground to the trailhead.
To access the Hunter loop (18-mile turn), drive to the Devil's Backbone Trailhead near Loveland. Take Highway 34 West from Loveland and take a right onto Hidden Valley Rd and follow signs to the Devil's Backbone parking lot. Follow the trail north up the hill to the junction of the Wild and Hunter loops (roughly 2 miles).
The entire trail system is open to the public if you would like to spectate and encourage your runner elsewhere on course; however, crewing and pacing by foot or by bike is not allowed and will result in the disqualification of your runner.
Training
There will likely be organized training runs on Saturdays in September/October for Blue Sky. See the Fort Collins Trail Runners Facebook Group for group run postings, as well as our Community Page for suggested routes.
We also offer a basic 15-week (marathon) and 9-week (half marathon) training plan leading up to the event.
Detailed Marathon Course Directions
Start to Towers Aid (4.4mi): The start line is located at the Blue Sky Trailhead off County Road 38E, six miles west of Fort Collins. From the start, you will run north on the Blue Sky Trail through the campground 1.3 miles to the Soderberg Trailhead, continuing north on the Swan Johnson Trail to Towers Rd where you will take a left up the hill to Towers Aid.
Towers Aid to Blue Sky Aid (9.2mi): Volunteers at Towers Aid will direct you out of the aid station to turn right onto the Herrington Trail. Shortly after the turn onto Herrington you will bear LEFT onto the Stout Trail (courses split). The descent down the Stout Trail is rocky, so watch your footing, though be sure to check out the reservoir views. Stout will contour around the hillside to bring you back to Towers Rd. Turn right on Towers Rd and take another right back onto Swan Johnson south back to the Soderberg Trailhead. Continue south back through the campground to the Blue Sky Aid start/finish area.
Blue Sky Aid to Indian Summer North Aid (13.2mi): Continue south on the Blue Sky Trail. This section of the trail will be winding, rolling single track with many blind corners. Please be aware that the trail is open for public use. You will pass only one trail junction with the Rim Rock Trail. Continue straight past this intersection down the hill into the valley towards Indian Summer North Aid, which will be visible from this point on the course.
Indian Summer North Aid to Indian Summer South Aid (15.6mi): The Indian Summer North Aid is at the junction of the Indian Summer Loop. Make sure that your number is recorded at the aid station and volunteers will direct you to turn right up the hill onto the Indian Summer Trail. On completing the loop, make a right at the trail junction to turn south back onto the Blue Sky Trail. Indian Summer South Aid will be located about a quarter mile south of this intersection. This is your last chance for aid before a long and difficult 5 mile section through the Devil's Backbone side of the course. Make sure you leave with adequate water.
Indian Summer South Aid to Hunter Turnaround to Indian Summer South Aid (20.3mi): Continue south on the Blue Sky Trail. Once you pop over the hogback cliff band, the terrain becomes very rocky and technical. There are two loops to negotiate here and all you need to remember is to turn right. There is only one right way to go. At the first junction with the Laughing Horse Loop, turn right. At the end of the Laughing Horse Loop, continue straight ahead. At the second junction with the Hunter Loop, turn right. At the end of the Hunter Loop, a course marshal will record your number. Volunteers hike into this location so there will be no aid available. The course marshal will direct you to continue around the Hunter Loop, and you will return north towards the finish. On the return trip at the end of the Hunter Loop, turn right and continue north. At the next Laughing Horse Loop junction, turn right. At the end of the Laughing Horse Loop continue straight north, back down off the ridge into the
valley to Indian Summer South Aid.
Indian Summer South Aid to Indian Summer North Aid (22.7mi): From Indian Summer South Aid, you will return the way you came. About a quarter mile north of the aid station, you will turn left to go back up and over the Indian Summer Loop to Indian Summer North Aid.
Indian Summer North Aid to Finish (26.7mi): After leaving Indian Summer North Aid, you’ll have a short climb up past the Rim Rock junction. From there you’ll have just a few more miles of rolling single track to the finish.
Detailed Half Marathon Course Directions
Start to Underpass Aid (1.9mi): From the start at South Bay, follow the new Bay-to-Bay Trail around the peninsula to where it joins with the Blue Sky Trail. Turn left to head south on the Blue Sky Trail to the aid station.
Underpass Aid to Indian Summer North Aid (3.5mi): Continue on the Blue Sky Trail heading south, past the junction with the Rimrock Trail to the junction with the Indian Summer Trail where the aid station is located.
Indian Summer North Aid to Indian Summer North Aid (2.7mi): Out of the aid station, head west on the single track trail, climbing steadily up and curving south around the Indian Summer Loop. Enjoy the false summit! Bomb back downhill on the single track switchbacks until you reach a T-junction with the Blue Sky Trail. Turn left (north) and follow the single track for about a quarter mile till it junctions with the gravel road. Turn left (north) and follow the road another 0.4mi back to the aid station.
Indian Summer North Aid to Underpass Aid (3.5mi): Retrace your steps back to the start/finish. Begin by heading east/north out of the aid station on the Blue Sky Trail, continuing north under the underpass to the aid station.
Underpass Aid to FINISH (1.9mi): Continue north on the Blue Sky Trail for a very short distance, veering right at the junction onto the Bay-to-Bay Trail around the peninsula and to the Finish!
Race Rules
Race rules are designed to provide a safe and fair experience for everyone involved and to help ensure our ability to produce the race again next year. Major rule infractions by racers will result in immediate disqualification of the racer. Please do not argue with or harass our volunteers. Please direct any questions and feedback to us here.
The marathon will be limited to 9 hours and the half marathon will be limited to 6 hours. Both will start at 7:00am. Please refer to the Aid Station section of this page for intermediate marathon cut-offs. There are no intermediate half marathon cut-offs.
At each aid station, volunteers will record runner bib numbers. Runners are responsible for making sure that aid station volunteers record their number. Please make sure that your bib number is visible from the front and call out and confirm your number when passing through an aid station. This is important so that we can keep track of runners, record your intermediate race splits and know that you are not lost or injured.
If you need to drop out of the race for any reason, you must check out with the nearest aid station or course volunteer.
Purposeful littering is prohibited and will result in an immediate disqualification.
Stay on the trail. No bushwhacking or short cutting. In case of wet trail conditions, please run through any muddy sections to avoid widening the trail. Yield to pedestrian and horses. Mountain bikers should yield to runners, but please use common sense in all circumstances.
Pacers are not allowed. Crewing is allowed at designated aid stations only.
No mechanical aid (poles, traction devices, etc.) unless approved by race staff prior to the race for a specific reason.
All runners should carry a 16oz minimum water bottle or bladder that can be refilled at aid stations. There will be no water cups at aid stations.
Dogs are not allowed on the course with runners.
Schedule
Friday 10/16:
4:00-7:00p: Optional marathon & half marathon packet pick-up at Altitude Running 2531 S Shields St #2N, Fort Collins, CO 80526
Saturday 10/17:
5:30-6:45a: Marathon Race Day Packet Pickup
6:50a: Marathon Pre-Race Briefing
7:00a: Marathon Start
9:30a-4:00p: Finish Line Meal Served
10:00a: Blue Sky Aid Cut-Off - Marathon
11:30a: Overall Marathon Awards. Age Groups Offered on a Rolling Basis
12:30p Indian Summer South Aid Southbound Marathon Cut-Off
1:45p: Indian Summer South Aid Northbound Marathon Cut-Off
4:00p: Finish Cut-Off
Sunday 10/18:
5:30-6:45a: Half Marathon Race Day Packet Pickup
6:50a: Half Marathon Pre-Race Briefing
7:00a: Half Marathon Start
8:30a-1:00p: Finish Line Meal Served
9:45a Overall Awards. Age Groups Offered on a Rolling Basis
1:00p: Finish Cut-Off
Parking & Directions
Marathon
The Marathon Start/Finish line is located at the Blue Sky Trailhead off of County Road 38E across from the Horsetooth Tavern.
Parking for all participants and spectators will be located in the Inlet Bay Marina parking lot off of Shoreline Drive. It is a 0.7mi walk from the Marina to the start/finish area.
Carpools of two or more runners will be given priority parking at the Blue Sky Trailhead at the start/finish until it fills. Please carpool if you can and want priority parking.
Parking is in designated parking spaces only. There is no parking allowed in the campground areas (unless you have reserved and paid for a nearby campsite.)
Drop offs can be made at the small turnout off Shoreline Drive just around the corner from the Blue Sky Trailhead. Vehicles should not stop anywhere on the side of 38E.
Parking is not allowed anywhere on 38E, along Shoreline Drive, or on any connecting residential street.
Half Marathon
The Half Marathon Start/Finish line is located at the South Bay Pavilion off of County Road 38E. Turn in at the sign for South Bay, right after the Town of Stout sign.
Parking for all participants and spectators will also be in South Bay. Later arrivals may have a longer walk.
Parking is in designated parking spaces only. There is no parking allowed in the campground areas (unless you have reserved and paid for a nearby campsite.)
All vehicles containing registered runners will receive a park pass - good for one vehicle - as part of their entry fee upon arrival on race morning. Any other vehicles (crews/spectators) will be required to have a Larimer County Parks Annual Pass or purchase a day pass on-site for $10.
Driving Directions
Marathon: 4780 W County Road 38E, Fort Collins, Colorado, 80526
Half Marathon: 4210 W County Road 38E, Fort Collins, Colorado, 80526
Join us on a journey from Fort Collins to Loveland. The marathon begins at Edora Park in Fort Collins and ends at Fairgrounds Park in Loveland. The half-marathon starts at Fossil Creek Park and also ends at Fairgrounds Park in Loveland. Along the way, whether in the half or the full, enjoy stunning mountain views as you piece together sections of the newly completed Long View and Front Range bike paths.
On a side note, when shirts are sold out, please come to the finish line merch after your race. We ALWAYS have shirts at the finish line for those who were unable to grab one during registration.
Welcome to the Great Trailhead Foot Race at Bear Creek Lake Park! Featuring legitimate TRAILS in the shadow of Denver's skyline, you'll love the single-track and dirt as you race 5 miles, or a double lap of 10 miles to the finish line party!
Bring your ID because there's FREE BEER for 21 and up (with a valid ID)! Plus, your registration includes entry to the park for the whole day and FREE Hot Dogs, Chips, Protein Bars, N/A Beer, Bananas, and more! AND 10 Milers get a Finisher Mug!
Entry fees include the cost of entry into the park, a post-run party, and one finisher's meal!
Ready to take on an awe-inspiring challenge? 🌟 Come and join the Run the Rocks Park and Amphitheatre in Morrison, a 5 km course that will energize you in the heart of nature 💪.
🏃♂️ Colorado Coyotes Cross Country Invitational 🏃♀️
Join us for the ninth annual Colorado Coyotes Cross Country Invitational—a high-energy event open to all youth runners ages 6 to 14!
This exciting meet features a scenic course made up of grass, crushed dirt rock, a few sidewalk crossings, and rolling hills—perfect for a fun and challenging race experience.
All races will be professionally chip-timed by Colorado Race Timing, and each runner will receive a custom bib. The top 10 boys and girls in each division will earn custom die-cast medals to commemorate their performance.
📌 Races will be run coed (boys and girls together), and age groups are determined by the runner’s age as of December 31, 2025.
🗓️ Race Schedule
Ages 13–14 (Born 2011–2012) – 4K (2.48 miles)
🕘 9:00 AM – Competitive & CARA Division
Ages 11–12 (Born 2013–2014) – 3K (1.86 miles)
🕤 9:30 AM – Competitive
🕤 9:33 AM – CARA Division
Ages 9–10 (Born 2015–2016) – 3K (1.86 miles)
🕙 10:00 AM – Competitive
🕙 10:03 AM – CARA Division
Ages 8 & Under (Born 2017 or later) – 2K (1.24 miles)
🕥 10:30 AM – Competitive
🕥 10:33 AM – CARA Division
🏅 Results
Complete results will be posted on this page shortly after each race.
📍 Location & Directions
Start & Finish:
deKoevend Park, Shelter C
Next to Goodson Recreation Center
Address: 6315 S. University Blvd., Centennial, CO 80121
Packet Pickup:
Begins at 7:30 AM on race day at Shelter C.
Parking & Drop-Off:
Shelter C is located in the northwest corner of the Goodson Recreation Center parking area. For easy access:
Drop off tents, gear, and runners near Shelter C
Then park in one of the following lots:
Goodson Recreation Center – 6315 S. University Blvd.
deKoevend Park – 6301 S. University Blvd.
South Suburban Ice Arena – 6580 S. Vine St.
➡️ Use the bridge from this lot to access the High Line Canal and walk to deKoevend Park.
Ready to race? Let’s run wild with the Coyotes!
For more info, visit www.coloradocoyotes.com
The Rocky Mountain Lobo Invitational features seven races on a true cross country course in beautiful Spring Canyon Park.
Our high school 5k features grass and dirt trails with minimal sidewalk crossings. Course Map.
The community 5k covers the same course as the high school races. Perfect for runners looking to spike up for a unique cross-country experience!
The Lobo Invitational also offers a low-key, 1.5 mile race opportunity for middle school runners looking to get their feet wet before their school season starts.
The Lobo Invitational is great for spectating and for coaches taking splits. Please join us for this festive, fun event! All proceeds from this event support Rocky Mountain High School Cross Country!
Join us for the Race for Joy & Justice 5K, a family-friendly run/walk event benefiting the Joy & Justice organization based in Timnath, Colorado. This exciting event brings together people of all ages and abilities to support Joy & Justice’s mission of providing experiences of joy for children and their safe parent recovering from domestic violence while helping to make the justice system safer for kids.
Whether you're a seasoned runner or a casual walker, the 5K offers a scenic course through Timnath's beautiful landscapes. You'll experience a day filled with joy, camaraderie, and a sense of purpose as you help make a tangible difference in our community.
The proceeds from this event will go directly to funding Joy & Justice's initiatives, including birthday parties, tickets to fun events, small local trips, extra curricular activities, and more in order to promote healing for survivors of domestic violence. By participating, you’ll not only get a great workout but also contribute to a meaningful cause that transforms lives and creates lasting change.
Bring your friends, family, and even your furry companions, and join us in running for a brighter, more just future!
Join us Sunday, September 27th, 2026
10:00am 5k Run/Walk
11:00am Kids Fun Run
12:00pm Awards followed by Food and Fun