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Date:
Sun, Apr 05, 2026 at 8:00 AM
Location:
4800 S. Dayton St.
Greenwood Village, Colorado
80111
United States
OpenStreetMap Google Maps
Links:
racingunderground.com Register at runsignup.com
Tags:
13.1 Miles Half Marathon Run Trail

FULL WEBSITE AT: http://www.racingunderground.com/threecreeks/

Welcome to Denver's Best Spring Half Marathon!

Sunday April 5, 2026 at Cherry Creek State Park

Racing Underground brings you an amazing half marathon this spring! The Three Creeks Half Marathon features a half marathon course that is flat, fast and scenic!

Travel on foot through some of the most beautiful parts of Cherry Creek State Park, with a total combined elevation gain of only 291 feet spread out over 13.1 miles as the course follows the banks of Cherry Creek, Windmill Creek, and Cottonwood Creek on a mix of road, paved running trail, and wide dirt trails.

We hope to see you at the 13th annual Three Creeks Half this April!

Darrin, Jill,and the Racing Underground Crew

More races nearby

  • Healthy Kids Running Series Spring 2026 - Denver, CO [healthykidsrunningseries.org] [Register at runsignup.com]

    Sun, Apr 12, 2026 at 3:00 PM

    Description

    Who We Are: Healthy Kids Running Series is a five (5) week running program in the spring and fall for kids Pre-K through 8th grade. Each HKRS Series takes place once a week and offers age-appropriate...

    Who We Are: Healthy Kids Running Series is a five (5) week running program in the spring and fall for kids Pre-K through 8th grade. Each HKRS Series takes place once a week and offers age-appropriate running events including the 50 & 75 yard dashes, the 1/4 mile, the 1/2 mile and the 1 mile run. Kids will earn points for each race they complete based on their finish.

    Pricing: The registration fee covers the entire five (5) weeks of the Series which includes race bibs for each week, a runner shirt, a finisher medal and any sponsor giveaways. Registration is non-refundable and non-transferable. Online Early Bird registration increases three weeks prior to the first race event.

    Challenger: This Series offers a Challenger Division which is an adaptive 75 yard race for children with disabilities and/or special needs. This allows for parents, siblings, and friends to be on the course with runners to provide support as well as bringing their own supportive devices such as crutches, braces, wheelchairs, etc. to be used by runners.

    Makeup Date Information: 5/24/2026

    Single Day Racing: Single day race registration opens one hour prior to the start of each race. The registration fee covers one single race to be run on the day of registration. ALL single day registrations should be completed onsite at the race location. Single day racers will have the option to upgrade to the full series (see tab on the left side of the page for instructions). There is a strict no-refund and no-transfer policy.

    Awards: All participants receive a medal on Week 5! Trophies will be awarded to the overall top finishers in each of the divisions listed below (broken out by boys and girls respectively):

    Pre-K 50 Yard Dash

    Pre-K 75 Yard Dash

    Kindergarten & 1st Grade

    2nd & 3rd Grade

    4th & 5th Grade

    6th to 8th Grade

    Challenger

    Share your running photos with our community! Find us on Facebook @HealthyKidsRunning or Instagram @healthykidsrs!

    #GetUpandGo

    2.3 km from Greenwood Village
    Denver, Colorado, 80237, United States
    OpenStreetMap Google Maps

    Kids Run Wheelchair

  • Coffee Lovers Run 5K/10K/13.1 DENVER/AURORA [thebestraces.com]

    Sat, Apr 25, 2026 at 7:30 AM

    Description

    ☕️For all the Coffee Lovers, this run is for you!

    You’ll love the shirt we send you. Set a goal, bring a friend, and join this super fun 5K/10K/13.1 Half-Marathon!

    Overview:

    Run will sell-out QUICK!...

    ☕️For all the Coffee Lovers, this run is for you!

    You’ll love the shirt we send you. Set a goal, bring a friend, and join this super fun 5K/10K/13.1 Half-Marathon!

    Overview:

    Run will sell-out QUICK! We will close off waves the moment they fill up. If waves are sold out, you can sign-up for the virtual run option or wait list.

    This is a smaller, private group run with a cap per wave.

    All paces and ages (under 18 with guardian) are welcome - Run or Walk!

    There's no equipment or setup, this is a pure run with our coordinators to support you in a warm, stress-free setting!

    When you sign-up, we give you the support you need to help you achieve your goals and fitness. We also invite you to be part of our local run clubs that supports your fitness journey.

    Timing:

    • Timing is Optional: You may track your time on an app (Strava, RunKeeper, Nike Run, etc) and submit your times with our easy form to be posted online. Or you can ask our coordinators to help keep track of your time.

    • No timing chips (This is a stress free run to support you in achieving your goals)!

    What You Get (Swag Bag):

    • Running T-Shirt (Shipped to the address you register with - US only)

    • Finisher's Towel or Giveaway

    • Finisher's Medal!

    • Digital Training Pack

    • Online Results & Certificate of Completion

    • Invitation to Join one of our Local Running Clubs

    • We now have Technical Running Shirts (Optional). These lightweight, moisture wicking shirts can be upgraded for just $5 more.

    Packet Pickup:

    No hassle of picking up packets required!

    -Swag shipped direct to your address (Please make sure you provide your full, correct US mailing address including apartment number and check spelling)

    • Race bibs are provided on race day

    When will I get my Swag?

    You will get your shirt at your mailing address the week of your race.

    Race Updates:

    We will email you a final update the Wednesday before the race with final details and course maps.

    Do you accept last minute registrations? (For those signing up 2 weeks before the race)

    Yes, but please note that it takes time for us to ship your shirt. Your shirt will likely arrive after the run. You can wear any shirt you find appropriate to run the race!

    Wave Times: (Email Us Your Desired Wave Time: info@thebestraces.com)

    (Waves filled on a First Come, First Serve Basis)

    Wave A: 7:30AM

    Wave B: 8:00AM

    Wave C: 8:30AM

    Late runners can run upon arrival (Please note our coordinators stay 3 hours after the first wave)

    Are there any other Questions we missed?

    https://www.thebestraces.com/faq/

    Virtual Run Option:

    • Our Virtual Run uniquely offers a Training Pack with Digital Tools to support your run.

    Virtual runs can be done any time and place of your choosing using any tracking device (optional). After you finish, you can submit your results to info@thebestraces.com to receive your medal!

    Race Bundle:

    Sign-up for more races and get a discount!

    Sponsorships & Promoting your Business:

    If you're looking to become a sponsor, we'd love showcase your business!

    https://www.thebestraces.com/events

    Team Glo Volunteers:

    If you're interested in helping put on runs for the Community and helping people achieve their goals, we invite you to join our team of volunteers, fill out the form here: https://www.thebestraces.com/volunteer-form/

    Be part of the Journey!

    Our Charity Initiatives. Find out more @ www.thebestracesjourney.com

    Keep running. Every mile you log after the race, we'll donate $1 to one of the charities we work with! (Note that Fundraising is Optional)

    9.9 km from Greenwood Village
    Piney Creek Hollow, Centennial, Colorado, 80016, United States
    OpenStreetMap Google Maps

    5k 10k 21k Run Virtual

  • Run for Donuts 5K/10K/13.1 DENVER/AURORA [thebestraces.com] [Register at raceroster.com]

    Sat, Apr 25, 2026 at 7:30 AM

    Description

    🍩🏃‍♂️🍩🏃‍♂️🍩🏃‍♂️

    Running for donuts is worth the pain. You'll get a run for donuts shirt to show off what you run for.

    Get ready for a sweet race! Gather your friends and lace up for our annual Donut...

    🍩🏃‍♂️🍩🏃‍♂️🍩🏃‍♂️

    Running for donuts is worth the pain. You'll get a run for donuts shirt to show off what you run for.

    Get ready for a sweet race! Gather your friends and lace up for our annual Donut Run, where you’ll run a beautiful course and be greeted at the Finish Line with... donuts! Enjoy a fun-filled day of running, laughter, and Community.

    Overview:

    Run will sell-out QUICK! We will close off waves the moment they fill up. If waves are sold out, you can sign-up for the virtual run option or wait list.

    This is a smaller, private group run with a cap per wave.

    All paces and ages (under 18 with guardian) are welcome - Run or Walk!

    There's no equipment or setup, this is a pure run with our coordinators to support you in a warm, stress-free setting!

    When you sign-up, we give you the support you need to help you achieve your goals and fitness. We also invite you to be part of our local run clubs that supports your fitness journey.

    Timing:

    • Timing is Optional: You may track your time on an app (Strava, RunKeeper, Nike Run, etc) and submit your times with our easy form to be posted online. Or you can ask our coordinators to help keep track of your time.

    • No timing chips (This is a stress free run to support you in achieving your goals)!

    What You Get (Swag Bag):

    • Running T-Shirt (Shipped to the address you register with - US only)

    • Finisher's Towel or Giveaway

    • Finisher's Medal!

    • Digital Training Pack

    • Online Results & Certificate of Completion

    • Invitation to Join one of our Local Running Clubs

    • We now have Technical Running Shirts (Optional). These lightweight, moisture wicking shirts can be upgraded for just $5 more.

    Packet Pickup:

    No hassle of picking up packets required!

    -Swag shipped direct to your address (Please make sure you provide your full, correct US mailing address including apartment number and check spelling)

    • Race bibs are provided on race day

    When will I get my Swag?

    You will get your shirt at your mailing address the week of your race.

    Race Updates:

    We will email you a final update the Wednesday before the race with final details and course maps.

    Do you accept last minute registrations? (For those signing up 2 weeks before the race)

    Yes, but please note that it takes time for us to ship your shirt. Your shirt will likely arrive after the run. You can wear any shirt you find appropriate to run the race!

    Wave Times: (Email Us Your Desired Wave Time: info@thebestraces.com)

    (Waves filled on a First Come, First Serve Basis)

    Wave A: 7:30AM

    Wave B: 8:00AM

    Wave C: 8:30AM

    Late runners can run upon arrival (Please note our coordinators stay 3 hours after the first wave)

    Are there any other Questions we missed?

    https://www.thebestraces.com/faq/

    Virtual Run Option:

    • Our Virtual Run uniquely offers a Training Pack with Digital Tools to support your run.

    Virtual runs can be done any time and place of your choosing using any tracking device (optional). After you finish, you can submit your results to info@thebestraces.com to receive your medal!

    Race Bundle:

    Sign-up for more races and get a discount!

    Sponsorships & Promoting your Business:

    If you're looking to become a sponsor, we'd love showcase your business!

    https://www.thebestraces.com/events

    Team Glo Volunteers:

    If you're interested in helping put on runs for the Community and helping people achieve their goals, we invite you to join our team of volunteers, fill out the form here: https://www.thebestraces.com/volunteer-form/

    Be part of the Journey!

    Our Charity Initiatives. Find out more @ www.thebestracesjourney.com

    Keep running. Every mile you log after the race, we'll donate $1 to one of the charities we work with! (Note that Fundraising is Optional)

    9.9 km from Greenwood Village
    Piney Creek Hollow, Centennial, Colorado, 80016, United States
    OpenStreetMap Google Maps

    5k 10k 21k Run Virtual Walk

  • Unicorn 5k (Denver-East) [runsignup.com]

    Sun, Apr 26, 2026 at 9:00 AM

    Description

    Ready to gallop around Denver with some friends? Yeah, you are! Come frolic with us at the Unicorn Runner 5k at Great Lawn Park to kick off your spring running season! You'll earn a sweet tee shirt...

    Ready to gallop around Denver with some friends? Yeah, you are! Come frolic with us at the Unicorn Runner 5k at Great Lawn Park to kick off your spring running season! You'll earn a sweet tee shirt and a flashy unicorn finisher medal!

    It's a 5k distance for all, and whether you walk, trot, canter or gallop, we'll be happy to see you! This event also features a shorter saunter for those not quite ready to enjoy a full 5k! The untimed 1/2 mile run is long enough to get your heart rate up and be a 'real run' without being a sprint!

    Costumes are encouraged and we're holding a COSTUME CONTEST for DIY costume clad participants!

    Remember to refer your friends and you can earn back up to $20 back from your registration fee (valid only on the 5k distance). Also - teams of 5 or more each get $5 off their registration. So form a group and get your buddies to join you today!

    All the info you need about this event is found on this site - click the menu bar or scroll to the bottom to see a listing of all page links!

    If you're looking for the Blessing of Unicorn running early in the summer on the north side of town, CLICK HERE for the Thornton event. Looking to run at the end of summer on the south side of town, CLICK HERE for the Highlands Ranch event!

    The Balloon Guy will be back this year- creating balloon creations for all!

    9.9 km from Greenwood Village
    Denver, Colorado, 80230, United States
    OpenStreetMap Google Maps

    3.1 Miles 5k Run Walk

  • High Line Canal 5K/10K Run [ssprd.org] [Register at runsignup.com]

    Sat, May 02, 2026 at 7:30 AM

    Description

    A local favorite! Runners of all ages and abilities are invited to participate in the 45th Annual High Line Canal Run along the scenic High Line Canal. This race is chip timed and registration...

    A local favorite! Runners of all ages and abilities are invited to participate in the 45th Annual High Line Canal Run along the scenic High Line Canal. This race is chip timed and registration includes a post-race pancake breakfast from Flippin’ Flapjacks and a beer garden from Breckenridge brewery as well as professional race photos and awards in 5-year increments.

    10K begins at 7:30 AM & 5K begins at 9:00 AM

    7.7 km from Greenwood Village
    6315 S University Blvd, Centennial, Colorado, 80121, United States
    OpenStreetMap Google Maps

    3.1 Miles 5k 6.2 Miles 10k Run

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