Fort Collins
Trail Running Calendar near Fort Collins 2026-2027
Explore the top trail runs near Fort Collins for 2026-2027! We've gathered 21 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
September 2026
Social trail run at Lory State Park on September 13 with multiple distance options, followed by coffee and bagels; a State Park Pass is required.
Experience two days of mountain endurance in Colorado with technical mountain bike and trail running races including a 50K ultra and the 100K Epic Double challenge.
October 2026
A scenic 5K through Estes Park during Elk Fest with shuttle transport from the Visitor Center and a finish at Performance Park.
Run a 4.167 mile loop every hour at 8,000 feet in this mountain endurance race where the last person standing wins a 1,000 dollar prize.
Trail marathon and half near Horsetooth Mountain Park featuring Colorado singletrack, rocky sections, fully stocked aid stations, and time limits for each distance.
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.
Trail races in Loveland, CO offering a roughly 13-mile half marathon with a 5-hour limit and a shorter 5K on varied, mixed-terrain trails.
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.
April 2027
50 mile solo and relay races run along the Poudre River Trail on April 11, 2027, plus a 100 mile option that combines in person and on your own miles.
May 2027
Trail races near Fort Collins offering 25 and 50 mile loops on mostly singletrack with about 5,500 or 11,000 feet of elevation gain.
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.
Experience a scenic downhill race through the Rocky Mountains with distances ranging from a 5 mile run to a full marathon passing the historic Stanley Hotel.
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 across Colorado from Fort Collins to Steamboat Springs with 36 legs and team options from solo to 12 runners.