Marathons in Colorado, United States 2026 8 events
42.2 kilometres (26.2 miles) — the classic endurance test. Browse upcoming events in United States.
Upcoming races
RunningIn 2 weeks
Deep Creek Trail Half Marathon
◎ Telluride, USA▤ Sep 26, 2026
21.1 km
RunningIn 3 weeks
Colorado Springs Marathon, Half, 5K, and Kids K
◎ Colorado Springs, USA▤ Oct 3, 2026
42.2 km
RunningIn 3 weeks
Boulder Marathon
◎ Boulder, USA▤ Oct 4, 2026
42.195 km
RunningIn 4 weeks
Durango Marathon
◎ Durango, USA▤ Oct 11, 2026
42.2 km
RunningIn 5 weeks
Blue Sky Trail Marathon & Half Marathon
◎ Fort Collins, USA▤ Oct 17-18, 2026
42.2 km
RunningIn 8 weeks
Marathon At The MAC
◎ Castle Rock, USA▤ Nov 7, 2026
42.2 km
RunningIn 6 months
22nd Annual Run Through Time Trail Marathon and Half Marathon
◎ Salida, USA▤ Mar 13, 2027
42.2 km
RunningIn 7 months
All-Out Beat the Heat
◎ Westminster, USA▤ Apr 24, 2027
5 km