Event details subject to change. Please confirm all information via event website.
Royal Gorge Groove Trail Runs
Royal Gorge Ranch and Resort 1 Buckskin Joe Parkway, Cañon City, CO, United StatesPrepare for some fun in Cañon City! Enjoy scenic views along the rim of the Royal Gorge, 900 feet above the Arkansas River. All races will start/finish at the Royal Gorge Ranch & Resort. Distances include a 50K, 30K, 20K, 13K, 5K and Kids Run. Make a weekend out of it with river rafting and […]
Fight for Air Climb
Coors Field 2001 Blake St, Denver, CO, United StatesThe Premier Stair-Climbing Event in Denver Where we climb: Coors Field. 1998 stairs to the top where you’ll see the world and yourself from a whole different perspective. How we climb: With friends, family and colleagues in a fun, celebratory atmosphere of hope and positivity. Firefighters: Unhealthy air is an occupational hazard for these everyday […]
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 grade hills in this event that is open to runners of all ages and abilities.
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 season! You'll earn a sweet tee shirt and a flashy unicorn finisher medal!
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 in New Hampshire. Much of the information for this event is kept secret with an exception for those who are accepted for entry. This is […]
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 Town, Fort Collins, where we have live music and a big post-race party featuring beer from Odell Brewing Company. For 2027 Boston Marathon qualifiers, races […]
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 75 acres of vineyards, Colterris is Colorado’s largest fully Estate Grown winery and we are proud to be one of Colorado’s wineries whose mission is […]
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!
Please click here to submit your event for FREE to our online calendar.
We do not allow events without physical locations (IE – virtual runs, runs with locations TBD, etc…).
Please allow 48 hours after submission for an event to appear on the calendar. If you have already listed your event and would like us to update it, please contact us.