Fort Collins

Trail running races and events in

Fort Collins

Quad Rock 50/25mi

Crazy Legs 10k+ Trail Run

Never Summer 100K/60K

Lory Summer Trail Series

Black Squirrel Half Marathon

September 6, 2025

Blue Sky Marathon

October 18, 2025

Colorado 24 Hour Run

November 1, 2025

Detours

Listings coming soon.