Showing 314 events within 150 km in the next 365 days. Page 11 of 16.
Sat, Sep 12, 2026 at 8:50 AM
THE Denver 5k! Denver's Iconic Sloan Lake is the setting for the return of 'THE Denver 5k'. Celebrate with friends and family as you race around the lake in the shadow of Denver's skyline. Group
pricing applies; youth and senior pricing are offered as well! Held at the start of September, THE Denver 5k is the perfect 'cool down' to the racing season!
Overall awards will be awarded based on gun time. All other awards (including age group awards) and rankings will (based on CHIP times.
5k Run
Sat, Sep 12, 2026 at 9:00 AM
Join us for the For the City Network 5K, a community run/walk dedicated to strengthening neighborhoods, supporting families, and creating positive change across Weld County. This event is open to all
ages and abilities — runners, walkers, families, and strollers are welcome!
Why We Run
Proceeds from the For the City Network 5K support For the City Network, a local nonprofit that brings organizations, leaders, and volunteers together to address real needs in our community and create lasting impact.
Where Proceeds Go
All proceeds support For the City Network’s community-based initiatives across Greeley and Weld County.
Can't make it to the race but want to donate? Head to the donation page on https://www.ftcnetwork.org/donate
Come move with purpose, connect with neighbors, and be part of positive change at the For The City Network 5K
5k Run Walk
Sat, Sep 12, 2026 at 9:30 AM
We invite you to join us on September 12, 2026 for the seventh annual CASA Superhero Run at Two Rivers Park in Glenwood Springs. We recognize that all children need heroes, but abused children need
superheroes!
Be a hero for children in need by participating in our annual CASA Superhero Run. Your involvement helps us provide crucial advocacy and support for abused and neglected children in our community.
This exciting event will feature a 5K race and a 1-mile Kids Fun Run, ensuring fun for the entire family. Superhero costumes are encouraged, but not required.
5k Fun Run Run
Sun, Sep 13, 2026 at 7:00 AM
RUN AMONG THE PEAKS
⛰️Estes Park ⛰️ Georgetown to Idaho Springs ⛰️ Mt. Sneffels ⛰️ Ned Ned Trail Fest ⛰️Lead King Loop
We all love a Colorado original - and nothing feels quite like running at
altitude (literally)!
Four of Colorado's most beloved half marathons, plus one unforgettable 25K, have joined forces with HAL Sports to create the Colorado Mountain Half+ Series!
This isn't just a series of races. It's an invitation to Run Among the Peaks! And what's more, the invitation is super flexible: sign up for any 3, 4, or ALL 5 events!
From breathtaking views to challenging climbs, each course showcases Colorado at its best - challenging, inspiring, and unforgettable. Some will take your best effort, but all of them will have you bragging about your success every chance you get!
What's more: every event in the series is proudly organized by nonprofits that support local youth programs, meaning every mile you run helps strengthen our communities and the next generation.
Why should you register for the Series?
~Because you're not afraid of a little altitude!
~Because you want to explore our beautiful State.
~Because collecting points at every race and chasing series awards sounds way more fun that sitting on the couch!
~AND because medals look way better at altitude.
21k Run Trail
Sun, Sep 13, 2026 at 7:00 AM
Join us for the Elevations Credit Union Buffalo Bicycle Classic on Sunday, September 13, 2026! Choose from nine unique ride options designed for every type of cyclist. Our road courses range from
moderate rolling routes to the challenging Epic climbs. For dirt‑lovers, our gravel courses offer everything from long, demanding mountain gravel to scenic mid‑distance routes. And for families and newer riders, the Little Buff provides a fun, easy ride on car‑free bike paths.
Ride Boulder Canyon on one of the Epic courses: If you’re riding the Epic, Epic 75, or starting the Gravel Epic, you’ll experience something truly special: westbound Boulder Canyon will be closed to vehicle traffic from 7–9 a.m. This is the one day all year when cyclists can enjoy this stunning canyon completely car‑free—an unforgettable perk reserved just for Buffalo Bicycle Classic riders.
Help Us Fund the Future: The Buffalo Bicycle Classic is more than a ride—it’s a fundraising event dedicated to supporting Colorado students through the BBC Scholarship Fund. This year marks our 24th anniversary, and our mission remains clear: help high‑achieving, high‑need students access a CU Boulder education.
Your registration supports scholarships—but you can make an even bigger impact by raising funds for BBC scholarships. As a part of ride registration, you have the option to become a fundraiser and collect awesome swag along the way. We will create a custom page and you can invite friends and family to contribute, and help open doors for more students. Every contribution fuels opportunity. Since 2003, the Buffalo Bicycle Classic has raised $4.3 million, helping 450+ students pursue their degrees. Your support ensures these scholars can focus on their education—not their tuition bills. Every registration counts. Every fundraiser amplifies the mission. Every dollar changes lives.
RIDE BIKES. CHANGE LIVES.
14 Miles 35 Miles 42.3 Miles 50 Miles 60 Miles 70 Miles 75 Miles 100 Miles Cycling Gravel
Sun, Sep 13, 2026 at 7:30 AM
12th Annual Nun Run
A Charity Race for Denver Sisters of Life!
Join us for a run like Nun other
on September 13, 2026
A 5K run and 1/2 marathon along the scenic High Line Canal, finishing in
deKoevend Park. The 1-mile family walk takes place entirely within the park.
Do you support life at all stages from conception until natural death? Do you believe every human being should be treated with the utmost dignity and the respect they deserve? Do you want to see a Culture of Life spread in our country and our world? Then this is the race for you. The Sisters of Life are a religious order who live out this charism of joy and live to serve, protect, and enhance the sacredness of every human life.
The Start/Finish line will be located at deKoevend Park near Shelter B with race day festivities at and between Shelters B & C! Registration and bib pickup will be located near Shelter A - once you've registered/picked up your materials, please join us on the other side of the walking bridge for the festivities! We have the privilege of celebrating Mass in the park with the Sisters at 11AM! Please bring umbrellas, lawn chairs, and/or blankets for your comfort during Mass.
Join us to celebrate 12 years of supporting the Denver Sisters of Life!
5k 21k Run
Sun, Sep 13, 2026 at 8:00 AM
Rocky Mountain Road Runners holds a monthly Trophy Series in the Denver area. We provide a low-key, low-cost racing environment. Everyone is welcome to run with us!
The 10km race uses a handicap
start system, slow-to-fast, spread over ~30 minutes. This gives everyone a chance to win. We'll use your estimated finish time to assign you a start time with others the same speed.
All 5k racers will start ~15min after the first 10km starters.
Race Day Details
Time: 10k starts at 8:00 am + your handicap.*
5k starts approximately 15min after the first 10k starter.
Show up 30 minutes early to get your tag and warm up.
Location: Riverdale Ballfields, 9830 Riverdale Road, Thornton, Colorado, 80229
Course: Both distances are out-and-back on a mix of paved and smooth gravel.
Parking: Plenty of parking at the park.
5k 10k Gravel Run
Sun, Sep 13, 2026 at 9:00 AM
The Tiger Prowl 5K is a fabulous annual community event and tradition run by the Lakewood High School Foundation to support all the talented and ambitious student programs offered.
All proceeds go
back into Lakewood High School programs for the students including theater, musical performance groups, athletics and the many other LHS clubs. Donations to the general fund of activities or directed to one specific effort are encouraged. Each year 100% of registration fees have gone directly back to the school programs.
Race Web Site: http://www.tigerprowl5k.com/
The shirts are high-quality, athletic t-shirts! Participants must register by September 5th in order to receive a t-shirt. You can still register after Septembr 5th but will not receive a shirt.
The course travels on the well-shaded neighborhood roads in Lakewood. The race will be professionally chip timed by Colorado Race Timing, featuring state-of-the-art timing tags on the back of the bibs. Live results will be posted, and runners who register online can sign up for live texting/emailing of their race results.
Guaranteed T-Shirt Registration $30 by September 5th
Standard Registration $35 August 28th-Sept 5th
Late Registration $40, Sept 6th-15th
Race bib pick up is at Lakewood High School, West Atrium: Sept 18th and 19th 3-5 PM & Race Day Morning 7:30-8:45 AM
Online registration stays open even on Race Day. No need to register at the school, but please register before you come to pick up your race bib!
T-Shirts only for those registered by September 5th!!!
Please park in the Lakewood High School east or west parking lot.
Race Starts at 9 AM
** The Tiger Prowl is a yearly fundraiser. All funds are managed by the Lakewood High School Foundation, a 501(c)3 non-profit Colorado corporation. Donations are tax-deductible as a charitable donation to the extent provided by law.
3.1 Miles 5k Run
Sun, Sep 13, 2026 at 9:00 AM
Are you ready to challenge yourself? We will have a 1-mile loop open for 1 ½ hrs. Who can run the most loops in 1 ½ hrs? Who can run the fastest? We will have awards for different categories. Come
challenge yourself at the Honey Festival while running the Honey Bee Challenge!
This year we are adding a Mini Honey Bee Hustle for kids 10 and under. They will have 30 min to run as many loops as possible!
There will be a lot of fun activities happening throughout the morning! There will be live music, the Honey Festival will be happening all morning, the Farmer’s Market will be open and so much more! We are working with the Loveland Parks and Rec to bring this fun and new challenge to Loveland!
Run
Sun, Sep 13, 2026 at 9:00 AM
The 9/11 Heroes Run 5K welcomes runners, ruckers, and walkers of all ages and fitness levels to honor the heroes of 9/11 and those who've served our nations since. We activate & unite communities and
empower local veterans, active duty, first responders, and families of the fallen.
TMF is proud to partner with GORUCK again with rucking divisions at every run. Rucking is a sport based on special forces training in which participants walk or run while carrying weighted rucksacks. All participants registered for the GORUCK division will earn this year's exclusive TMF GORUCK patch. Learn more about GORUCK here.
1 Miles 5k Run Walk
Tue, Sep 15, 2026
🗺 Leadville Trail 100 Run is a must-attend event to mark on your race calendar in the United States 🇺🇸 in Leadville.
Run Trail
Fri, Sep 18, 2026
97.2 km from TabernashRun Ultra
Sat, Sep 19, 2026
57 km from Tabernash5 Miles 10 Miles Trail
Sat, Sep 19, 2026 at 8:15 PM
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.
3.1 Miles 5k Run Trail Walk
Sat, Sep 19, 2026 at 7:00 AM
One of Colorado's favorite trails meets one of its most glorious parks at our 9th annual Fallfest! As courses wind southwest along Big Dry Creek Trail, the remarkable sight of Standley Lake with the Flatirons on the horizon will come into view. Its Endless Series sidekick in September is Beat the Heat.
5k 10k 13.1 Miles Run Trail
Sat, Sep 19, 2026 at 7:00 AM
13.32 miles and 7,867ft of elevation gain.
From Manitou Springs to the summit of Pikes Peak.
This is not your average half marathon, it is a challenge unlike any other!
13.32 Miles Run
Sat, Sep 19, 2026 at 8:00 AM
The race benefits THE United States Marine Corps Memorial dedicated "to all Marines for all time" to "Honor Marines and remember all who serve". Lives are changed when veterans visit the Memorial -
learn more on the web site at Https://USMCMemorialFoundation.org Funds help maintain flags, lights, and what we have until funds can be raised to remodel the memorial.
Race Location:
Colorado Tap House
14982 W 69th Ave, Arvada, CO 80007
Parking:
There will be specific parking for the race - follow the signs
Course:
This is a very simple 5K and trail is well marked. There are a couple of streets to cross and guards will assist with that.
Walking and kids are welcome…
Awards
Top 3 male and top 3 female runners
Top 3 male and female in following age brackets: 20 & Under, 21-30, 31-40, 41-50, 51-60, 61 & Over
Those who finish the race receive a collectible dog tag as they cross the finish line from a veteran volunteer!
5k Run Trail
Sat, Sep 19, 2026 at 8:00 AM
A child's adventure begins with yours.
The Battle by the Brook Adventure Race
raises money to send kids to camp.
Join us for the
9th Annual YMCA Camp Shady Brook's
Battle by the Brook
September 19th, 2026.
6 Miles 20 Miles
Sat, Sep 19, 2026 at 8:45 AM
Miles 4 Madison is a 5K/1K Fun Run supported by Sterling Ranch CAB. Miles 4 Madison's goal is to provide educational and recreational opportunities for families with children with different
abilities. The Race is for all capabilities, strollers, and pet-friendly! Race registrations done after 9/10 won't be guaranteed the selected shirt size.
After the success of previous years races, Miles for Madison provided scholarships for several Douglas County children to attend the week-long summer camp at Easter Seals Rocky Mountain Village as well as attend hippotherapy in Douglas County. We have been able to donate playground equipment to local schools and have hosted multiple sensory-friendly events in Sterling Ranch, including Sensory swim and, most recently, a sensory-friendly egg hunt. Miles for Madison is also working to build inclusive parks in the Chatfield Basin.
The race will take place at Providence Park, located within the Sterling Ranch Community. The race address is 8100 Piney River Avenue, Littleton, CO 80125.
Prizes will be awarded to the top 3 finishers in the 5 K, male and female.
To Volunteer, please click the tab at the top of the page.
5K Route
Packet Pick Up
More Information will be available after registration opens.
1k 3.1 Miles 5k Fun Run Run Swim
Sat, Sep 19, 2026 at 9:00 AM
View all the details on our website - One Love Endurance! Link is below!
1k 3.1 Miles 6.2 Miles 13.1 Miles Run