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

Colorado Springs Marathon, Half, 5K, and Kids K Colorado Springs, Colorado
Boulderthon Featured Featured Boulderthon: Boulder Marathon (Full, Half, 10k, 5k, Kids Run) Boulder, Colorado
Mancos Cowboy Half Marathon, 5K and Fun Run Mancos, Colorado
Long View Marathon & Half Fort Collins, Colorado
Blue Sky Marathon Fort Collins, Colorado
REVEL Rockies Denver, Colorado

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