Event details subject to change. Please confirm all information via event website.
SOAR 5K
Welchester Elementary School 13000 W 10th Ave, Golden, CO, United StatesSoar like an eagle on this 5K Run (3.1 miles) that includes a scenic double loop course around Daniels Park and the Welchester Elementary community. Enjoy the challenge of lower […]
Unicorn 5K
Great Lawn Park 101 Yosemite St, Denver, CO, United StatesReady 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 […]
Greenland Trail Race
Greenland Open Space 1532 E Noe Rd, Larkspur, CO, United StatesThe Greenland Trail Race offers four outstanding distances in southern Douglas County. Run the 4 Miler, the 8 Miler, the 25K, or tackle the 50K ultramarathon, Colorado’s fastest 50K! With Pikes Peak as your backdrop, you’ll cruise over a soft dirt trail on your way to a new personal best. With chip timing, an innovative technical running shirt in men’s and women’s sizing, food and beer at the finish, this race will make you want to come back for more!
Niwot’s Challenge
Sedalia Post Office 4195 Douglas Ave, Sedalia, CO, United StatesNiwot’s Challenge is a very difficult, grass-roots, ultramarathon in Colorado’s Front Range. It is modeled after the arduous Barkley Marathons in Tennessee, and the historic More and More Difficult 50K […]
Colorado Marathon
Washington Park - Fort Collins 301 Maple St, Fort Collins, CO, United StatesMarathon, Half Marathon, 10k, 5k and 3-Person Marathon Relay. Marathon, Marathon Relay and Half Marathon runners get to run down the scenic, downhill Poudre Canyon to the finish in Old […]
Longmont Half and 5K
Longmont Rec Center 310 Quail Rd., Longmont, CO, United StatesLongmont's only Half Marathon - now offered in the cooler month of MAY! Join the Half Marathon or 5k distance! Walkers and Runners of all abilities welcome!
Colterris Wine Run 5K
Colterris Winery 3907 N River Rd, Palisade, CO, United StatesLike Running or Walking? Love Wine? This race is for you! Join us for an exciting annual event that features the amazing scenery and landscape of Colterris Winery! With over […]
Colorado Women’s Classic
Westminster Promenade 10600 Westminster Blvd, Westminster, CO, United StatesWe are excited for the 2026 Colorado Women's Classic! While focused on women, all genders are WELCOME at this event!
Ram Party Trail Runs
Buffalo Lodge Bicycle Resort 2 El Paso Blvd, Colorado Springs, CO, United StatesWith plenty of race options for everybody centered around the beautiful Rampart Reservoir in Woodland Park, Colorado, you're sure to have a good time while you take in the epic […]
Endure Trail Runs
Mueller State Park 21045 State Highway 67, Divide, CO, United StatesThe Endure 12-Hour is a one-of-a-kind challenging 12-Hour timed event, designed by YOU… and tiny colorful balls. Each runner will pull colored balls from a bucket, which determines the loop they’ll […]
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