Trail Running calendar near Lyons 2026-2027

Trail marathon and half near Fort Collins along redstone singletrack and technical rock sections, with stocked aid stations, drop bag options, and caps of 400 entries per distance.

Trail races at Bear Creek Lake Park offering 5 miles or a two-lap 10 miles on single-track dirt. Registration includes park admission, a finisher meal and refreshments; 10 mile finishers receive a commemorative mug.

Trail races at Bear Creek Lake Park in Lakewood, CO on Sun, Oct 25, 2026 offering 5 km, 15 km, a 5+15 Double, and a Kids 1 km. Mostly dirt single and double track with short steep hills and clearly marked routes.

MonsterDASH Louisville on Oct 25, 2026 offers a new half marathon plus 5k, 10k and a kids mile with costume contests, expo, and themed runner perks.

Experience 13.1 miles of singletrack trails and hills in the Highlands Ranch Backcountry Wilderness Area. Enjoy custom medals and a post race pancake breakfast while competing for cash prizes in various categories.

Timed 6-, 12- and 24-hour running and relay events on a certified 1.0002 mile dirt loop at Colorado Youth Outdoors Swift Ponds in Fort Collins, with full-service aid every lap and locker-style lodge support nearby.

Trail races in Louisville, Colorado offering half marathon, 10 km and 5 km courses on mostly dirt trails with views of the Flat Irons. The event includes aid stations, drop bag access, finish-line support and post-race festivities.

Trail running at Staunton State Park with 50k, 16 mile and 8 mile options, 250 runner capacity, and time limits. Courses use varied mountain terrain above 8,000 feet with stocked aid stations and on-site finish awards.

A long-distance event along the Poudre River Trail on April 11, 2027, offering 50 mile and 100 mile solo and relay options through Fort Collins, Timnath, Windsor and Greeley. The course is supported with aid stations, exchange zones and fin..

Trail races at Greenland Open Space in Larkspur on May 1, 2027, offering 50K, 25K, 8 Mile and 4 Mile loops on dirt and double-track trails with aid stations and a high point near 7,400 feet.

Trail races near Fort Collins offering 25 and 50 mile options on mostly singletrack through Lory State Park and Horsetooth Mountain Park, featuring about 5,500 ft or 11,000 ft of vertical gain, staffed aid stations, and marked trails.