Discover the Best Half Marathons In Colorado

Browse our listing of half marathons in Colorado to find one that suits your goals. Plus, get training tips. For a full list of events, check out our calendar.

Colorado Half Marathons

REVEL Rockies Featured Featured REVEL Rockies Denver, Colorado
Colorado 13er Louisville, Colorado
Slacker Half Marathon-Relay-4-Mile Races Georgetown, Colorado
Longmont Half Marathon & 5k Longmont, Colorado
Summer Splash Prairie Dog Half Marathon, 10k, & 5k Castle Rock, Colorado
Staunton Rocks! Marathon & Half Denver, Colorado
Ned Ned Run Nederland, Colorado
Mountain Rats Festival Eagle, Colorado
Fall Equinox Marathon, Half Marathon & 5 Mile Fort Collins, Colorado
Red Feather Trail Jamboree Red Feather Lakes, Colorado
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
Long View Marathon & Half Fort Collins, Colorado