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

Valkyrie Trail Race Colorado Springs, Colorado
BOLDERBoulder Boulder, Colorado
REVEL Rockies Denver, Colorado
Colorado 13er Louisville, Colorado
IRONMAN 70.3 Boulder Boulder, Colorado
Silverton Alpine Runs Silverton, Colorado
Aspen Valley Marathon Aspen, Colorado
Never Summer 100K/60K Fort Collins, Colorado
Rocky Mountain Half & 5K Estes Park, Colorado
Leadville Trail 100 MTB Leadville, Colorado
Leadville Trail 10K Leadville, Colorado
Leadville Trail 100 RUN Leadville, Colorado
The Denver 5k Denver, Colorado
Pikes Peak Marathon + Ascent Manitou Springs, Colorado
Fall Equinox Marathon, Half Marathon & 5 Mile Fort Collins, Colorado

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