Event details subject to change. Please confirm all information via event website.
The Fast and the Curious 5K/10K
The Durango and Cortez Adult Education Center is delighted to announce our annual fun run! The Fast and the Curious is a 5k/10k run that not only celebrates physical fitness […]
Walk Like MADD
Walk Like MADD is MADD's signature fundraising event to help us raise both awareness and funds to end drunk driving and fight drugged driving. With every step taken and each […]
USAFA Half Marathon
Rio Grande 100
The Rio Grande 100 starts and finishes on the banks of the mighty Rio Grande River in beautiful South Fork, Colorado. The race takes you though the amazing La Garita […]
Smoky Hill Community 5K
3rd annual Smoky Hill Community 5k walk/run fundraiser
Walk Like MADD
Walk Like MADD is MADD's signature fundraising event to help us raise both awareness and funds to end drunk driving and fight drugged driving. With every step taken and each […]
Q Man Classic 5K
Highlands Ranch High School (HRHS) is proud to once again host the annual Q-Man Classic. This is a memorial race for Quinton Sanford, a student-athlete with Autism at HRHS who […]
Resolute Brewing 5K
Resolute Brewing Tap & Cellar 18148 West 92nd Lane, #Suite 100, Arvada, CO, United StatesJoin us for The Resolute Tap & Cellar 5k on August 23, 2025, for a 5k-ish, fun run event that starts and ends at this awesome taproom in Arvada. Run, […]
Walk for Life 5K
This will be our annual Walk for Life 5K. Our course will begin at the Raynolds/Ash Street bridge in the parking lot across from the Rec District building. The race […]
Unicorn 5K
Ready to get off the sofa and gallop around Aurora with some friends? Yeah, you are! Come frolic with us at the Unicorn Runner 5k at Arapahoe County Fairgrounds! You'll […]
Calarat Challenge Trail Running Festival
Join us Labor Day weekend for the Calarat Challenge Trail Running Festival. We start the festivities off on Saturday night with a 5K that you can run, walk or hike, […]
Tava Waters 5K
Orangetheory 5K
Join us for the annual Orangetheory 5k at Labor Day Lift Off. Starting from the IAFF Fallen Firefighters Memorial (northwest corner of Memorial Park), head through the side streets of […]
Mighty Marmot Kids Trail Race #1
Come join the Vail Recreation District for the 3rd Annual Mighty Marmot Kids Trail Race Series! Youths ages 4 to 10 are welcome to participate. Chose between 1 or 2 miles* to compete […]
PPRR Nielson Challenge
North Monument Valley Park 1794 Culebra Ave., Colorado Springs, CO, United StatesRace Format The first time you run this event, you'll establish a base time for yourself. This base time is used to generate a handicap time. The handicap time is […]
CASA Superhero 5K
We invite you to join us for the sixth annual CASA Superhero Run at Two Rivers Park in Glenwood Springs. We recognize that all children need heroes, but abused children […]
Denver Rocks Run 5K/10K
We all know Denver is known for its world-class cultural attractions, thriving craft breweries, and red-hot music scene. Be part of the first 5K/10K running event of its kind with this rock n' roll infused run that kicks off at Civic Center Park in downtown Denver on November 6, 2021.
New Vision 5K
The New Vision 5K Run/Walk exists to support New Vision Charter School, a public school in the Thompson School District. It's main purpose is to provide our staff and students […]
For a City 5K
Hey Runners! Did you know that Douglas County has one of the highest percentages of teen suicide in the United States? Thrive Church is committed to awareness of this crisis […]
Splashland Triathlon
Catch a glimpse of the Great Sand Dunes National Park with six 14’nrs in the background Mt. Blanca, Colorado’s 3rd highest peak overlooks the valley floor.
Jungle Dash
Come join us for a 1-mile fun run, as we kick off the Wild Wonderful Saturday events. Plan to stay and check out the Wild Zone. Welcome adventurers, explorers, and […]
Oktoberfest 5K Trail Run
The Oktoberfest 5K returns this fall on Saturday, September 13th, offering an active start to a festive weekend. Lace up your running shoes and experience the changing aspens and beautiful […]
Canceled Sloan’s Lake Search Party Marathon
THE SUMMARY Did you know that the loop around Sloan's Lake in Denver Colorado is almost perfectly 2.62 miles around? Join us as we go around the lake every hour on the […]
Mighty Marmot Kids Trail Race #2
Come join the Vail Recreation District for the 3rd Annual Mighty Marmot Kids Trail Race Series! Youths ages 4 to 10 are welcome to participate. Chose between 1 or 2 miles* to compete […]
D49 4.9K
Join us for the D4.9k Run/Walk, a family-friendly event open to D49 staff, students, parents, and community members! Our mission is to offer an engaging, affordable, and healthy event for […]
St. Jude Walk/Run
Event Description: St. Jude Walk/Run is a family friendly 5K event, taking place at Dick’s Sporting Goods Park on September 23rd. Participants come together during Childhood Cancer Awareness Month to […]
Move Forward 5K/10K
The Move Forward 5K/10K is an event created by the Doctor of Physical Therapy students at Regis University as a community outreach project. The proceeds from the event will benefit Canine Companions […]
Rock Cut Estes Park 5K
Join us for The Rock Cut Estes Park 5k on September 20, 2025, for a 5k-ish, fun run event that starts and ends at this awesome taproom in Estes Park. […]
Be Ovary Aware 5K
Raise awareness for ovarian cancer and raise funds to support Coloradans with 7 different types of gynecologic cancers: Ovarian, fallopian tube, uterine/endometrial, cervical, vaginal, vulvar and peritoneal cancers. This event […]
Golden Leaf Half Marathon
13.1 mile trail race with nearly 1000 ft of elevation gain from Snowmass to Aspen
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