Half Marathons in Colorado, United States 2026 6 events
21.1 kilometres (13.1 miles) — the bridge between the 10K and the full marathon. Browse upcoming events in United States.
Upcoming races
RunningIn 2 days
Black Squirrel Half Marathon
◎ Bellvue, USA▤ Sep 12, 2026
21.1 km
RunningIn 2 weeks
Deep Creek Trail Half Marathon
◎ Telluride, USA▤ Sep 26, 2026
21.1 km
RunningIn 5 weeks
Blue Sky Trail Marathon & Half Marathon
◎ Fort Collins, USA▤ Oct 17-18, 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
RunningIn 9 months
Colorado 13er (Half Marathon/10k/5k)
◎ Louisville, USA▤ Jun 6, 2027
21.1 km