Explore Colorado Races

Explore Colorado races for trail running, gravel biking, marathons and 10K. See upcoming and highlighted events below, and visit our calendar to filter by state and get a comprehensive list of races.

Get ready to lace up your running shoes and experience the thrill of racing in the breathtaking mountains of Colorado. From scenic trails to challenging terrain, Colorado offers a wide array of running events that will push you to your limits. Join thousands of passionate runners as you conquer iconic routes like Boulderthon, where you’ll push your endurance to the max at high altitudes, or immerse yourself in the vibrant atmosphere of the Bolder Boulder 10K, one of the largest and most celebrated road races in the country. Find the perfect race for every skill level and discover why Colorado is a runner’s paradise.

Upcoming Colorado Races

Never Summer 100K/60K Fort Collins, Colorado
Rocky Mountain Half & 5K Estes Park, Colorado
Leadville Trail 100 MTB Leadville, Colorado
Turkey Springs Showdown Trail Races Pagosa Springs, Colorado
Leadville Trail 10K Leadville, Colorado
Leadville Trail 100 RUN Leadville, Colorado
Erie Half & 5k Erie, Colorado
Alberta Peak Challenge Pagosa Springs, Colorado
Pikes Peak Marathon + Ascent Manitou Springs, Colorado
Fall Equinox Marathon, Half Marathon & 5 Mile Fort Collins, Colorado
Pioneer Prairie Dog Half Marathon, 10k & 5k Westminster, Colorado
Westy Half & 5k Westminster, Colorado

Visit the full calendar to filter by state and get a comprehensive list of races.