Trail Running calendar near Keystone 2025-2026

Event overview The Sheep Mountain Trail Runs is the 12th annual event held in Fairplay, Colorado, with the Start/Finish at the Town of Fairplay Beach. The race has a runner capacity of 300 and a time limit of 16 hours. The course sits at an..

Aspen Backcountry - August 1, 2026 The Aspen Backcountry race will take place in Aspen, Colorado on August 1, 2026. The event is hosted next to the Duck Derby fundraising event held annually by the Rotary Club Aspen. The race course offerin..

Run the Rockies Trail Race in Frisco, Colorado offers 5k, 10k, and half marathon distances on the scenic Frisco Peninsula trails, with views of Dillon Reservoir and the Ten Mile Range. The start and finish are at the Frisco Nordic Center. T..

Front Range Ultra Dayze invites 200 runners to tackle a flat two mile loop along River's Edge in Loveland with multi day timed and classic ultra options. On site camping, communal meals, and a welcoming vibe.