Fort Collins
Trail Running Calendar near Fort Collins 2026-2027
Explore the top trail runs near Fort Collins for 2026-2027! We've gathered 20 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
October 2026
A mountain backyard ultra where runners complete a 4.167 mile loop every hour at about 8,000 feet until one person remains; $1,000 for the last runner and buckles at 100 miles.
Trail marathon and half marathon near Fort Collins featuring redstone singletrack, significant elevation change, fully stocked aid stations, and a finish line meal.
November 2026
Timed 6, 12 and 24 hour individual and relay events on a flat USATF certified one mile dirt loop at Swift Ponds in Fort Collins with full aid and lodge access.
December 2026
A mountain challenge in Estes Park where runners complete 2km laps with 540ft of gain to reach elevation milestones and collect poker chips for rank.
Celebrate the season with a festive 10K featuring 1,500 feet of climbing and beautiful trail views at the YMCA of the Rockies.
February 2027
A winter gravel bike rally and trail run in Lyons, Colorado offering multiple run and ride distances, mixed terrain courses, and a public finish-line party with food and music.
April 2027
An ultramarathon on the Poudre River Trail through Fort Collins, Timnath, Windsor and Greeley offering 50 mile and 100 mile individual races plus relay team options.
May 2027
Trail races near Fort Collins offering 25 miles (≈5,500 ft gain) and 50 miles (≈11,000 ft gain) on mostly singletrack with staffed aid stations.
Trail races at YMCA of the Rockies on May 22, 2027 offering 10K, 25K, and 50K on mostly runnable singletrack at 8,000 feet; the 50K includes 6,000 feet of gain.
June 2027
A multi day running festival in Eaton Colorado featuring races from 7K to 100 miles, relays, a ruck event, virtual options, glamping, sauna and on site entertainment.
A weekend of road and trail races in Estes Park, CO, featuring marathon, half, 5-mile, trail descent, kids events, shuttled point-to-point courses and finish-line amenities.
August 2027
A four race midweek trail series at Lory State Park in August 2027 offering 5K, 10K and 12K options, post race food and beverages, and series awards.
A 200 mile point to point relay from Fort Collins to Steamboat Springs across 36 legs, run in several team categories and on public roads that remain open to traffic.
September 2027
Multiple day timed and distance ultrarun on a 2 mile loop in Loveland with continuous aid, camping, chip timing and finish buckles.
A 13.5 mile trail half around Lory State Park near Fort Collins with mostly singletrack, about 2,000 feet of elevation change and a 5.5 hour cutoff.