Denver Colfax Marathon

Registration now open! We are excited to host the largest marathon weekend in The Rockies on May 15-16, 2027! All the choices for all the goals: Denver’s only Marathon through Empower Field at Mile High Stadium Half Marathon running through Denver Zoo Conservation Alliance Assemble a team of 5 for the Marathon Relay Take on the last 10 miles of the Marathon in the Urban 10 Miler Finish in City Park with a huge running festival to collect your unique medal! Registration also includes race photos, shirt, lunch, drinks, huge expo at the stadium, and more!