Aurora

Colorado Colfax Marathon & Half Marathon


Buena Vista

Autumn Color Runs


Boulder

Boulder Backroads Marathon & Half Marathon


Colorado Springs

American Discovery Trail Marathon & Half Marathon


Denver

Arby's Rocky Mountain Half Marathon

New Denver Marathon & Half Marathon


Durango

Durango Double Marathon & Half Marathon


Estes Park

Estes Park Marathon & Half Marathon, 10K & 5K


Fort Collins

Colorado Marathon, Mini-Marathon & 10K

Horsetooth Half Marathon


Frisco

Run The Rockies Half Marathon


Georgetown

Georgetown to Idaho Springs Half Marathon

Slacker Half Marathon


Glenwood Springs

Glenwood Canyon Shuffle Race for Literacy


Kremmling

Kremmling Trail Half Marathon & 10K


Littleton

Platte River Half Marathon & Buckhorn Exchange Relay


Loveland

Heart Center of the Rockies Half Marathon, 10K & 5K


Steamboat Springs

Mountain Madness Half Marathon

Steamboat Marathon, Half Marathon, 10K & 5K Run/Walk


Vail

Teva Vail Half Marathon