Discover the Best Marathons In Colorado

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

Colorado Marathons

REVEL Rockies Featured Featured REVEL Rockies Denver, Colorado
Silverton Alpine Runs Silverton, Colorado
Staunton Rocks! Marathon & Half Denver, Colorado
Mountain Rats Festival Eagle, Colorado
Fall Equinox Marathon, Half Marathon & 5 Mile Fort Collins, 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
Blue Sky Marathon Fort Collins, Colorado