Fort Collins
Trail Running Calendar near Fort Collins 2026-2027
Explore the top trail runs near Fort Collins for 2026-2027! We've gathered 17 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
November 2026
December 2026
A limited 40-runner mountain ascent at Thumb Open Space: repeated 2 km laps with 540 ft gain, poker-chip turnarounds, and patch milestones for 14, 18, and 26 ascents.
A 10K at the YMCA of the Rockies on December 19, 2026, with trail and paved sections and nearly 1,500 feet of climbing; breakfast and a day pass included.
February 2027
A winter bike rally and trail run in Lyons, Colorado offering multiple run and ride distances plus an afterparty with food, music and saunas.
April 2027
Long distance races along the Poudre River Trail including 50 mile and 100 mile hybrid options, a 50k, and team relays through Fort Collins, Timnath, Windsor and Greeley.
May 2027
Trail races near Fort Collins with two distances: 25 miles (~5,500 ft gain) or 50 miles (~11,000 ft gain) on mostly singletrack through Lory State Park and Horsetooth.
Trail races at YMCA of the Rockies on May 22, 2027 featuring 10K, 25K, and a 50K with 6,000 feet of gain on mostly runnable singletrack.
June 2027
A mixed gravel-bike and trail-running festival in Lyons, Colorado on June 6, 2027, featuring races from 100K to 5 miles plus relays, BMX, camping and a concert.
Estes Park race weekend on June 20, 2027 features marathon, half marathon, Estes Trail Descent 7.75 miles, Longs Peak 5 mile, kids runs, finisher medals and age group awards.
August 2027
Four Tuesday evening trail races in Lory State Park, Fort Collins in August 2027 offering 5k, 10k and 12k distances with post-race pizza and vintage shirts.
A point to point 200 mile team relay across Colorado with 36 legs from Fort Collins to Steamboat Springs, offered in multiple team categories on open roads.
September 2027
Multi-day ultrarunning event in Loveland, Colorado offering timed and distance races on a two mile mostly trail loop, camping, chip timing, and a 150 runner cap.
A 13.5 mile trail half around Lory State Park near Fort Collins with ~2,000 ft elevation change, ridge climb, stocked aid stations and a post-race breakfast.