Trail Running calendar near Gunnison 2026-2027

At 10,600 feet in Alma, Colorado, Race in the Clouds is a June 25 to 28 Dirt Fest featuring mountain biking, trail running, off road duathlon, youth races and meadow camping, with USA Triathlon sanctioning and age group awards.

A remote, unmarked mountain 50K near Silverton, CO with about 19,000 ft of gain; membership and strong off-trail mountain experience are required and support on course is minimal.

Trail marathon and Heavy Half through Leadville’s historic mining district on June 27, 2026, reaching Mosquito Pass at 13,185 feet. The Marathon is a Leadville Trail 100 qualifier and general registration is sold out.

A three-race trail series near Glenwood Springs, Colorado, running June 27 to September 19, 2026, with 5k, 10k and half marathon options, bib pick up at Sunlight Mountain Resort and one aid station on the half marathon course.

Trail Town Ten in Ridgway features a 10 mile lollipop course with San Juan Mountain views and a 5 mile out-and-back on the same dirt roads. The event is coordinated with Ridgway RiverFest and benefits the Uncompahgre Watershed Partnership.

A community 5K in downtown Leadville on July 4, 2026, with a youth category and an Independence Day parade afterward. Proceeds support local youth athletics and recreation.

An uphill community foot race in Telluride on July 4 following the Telluride Trail to San Sophia ridge, with age-group awards and proceeds supporting the Good Neighbor Fund.

A high altitude trail running event in Como and Grant, Colorado offering ultras and shorter trail distances across alpine meadows, single track and historic mining terrain, with aid stations, drop bag options, crew and pacer rules.

A 100-mile loop in the San Juan Mountains near Silverton Colorado featuring about 66,500 feet of total elevation change and alpine terrain. The event publishes runner and volunteer manuals and supports local organizations.

A trail event at the Crested Butte Nordic Center featuring a 15 km out and back run, a 25 km loop run, and a technical 25 km mountain bike race with alpine climbs and a Green Lake checkpoint.

A high-altitude out-and-back ultra in Leadville with about 8,000 feet of gain over 50 miles, multiple aid stations, and an LT100 Run qualifier; additional 15-mile and juniors 5K distances are offered.

A 100 mile mountain endurance race in Ouray, Colorado with about 41,862 feet of elevation gain and fourteen climbs. Entrants must complete eight hours of volunteer service or pay a $100 opt out; top finishers face postrace drug testing and..

A 100 mile loop through Colorado's Sawatch Range, the High Lonesome 100 covers about 23,300 feet of climb, includes 27 miles of the Continental Divide Trail and 35 miles of the Colorado Trail, and provides detailed maps and aid stations.

A three day 120 miles trail running event near Buena Vista Colorado using charity bibs that require a minimum $2,000 fundraising commitment. Successful fundraisers receive a registration code and donations are final and distributed in Decem..

Mountain trail races in Silverton, Colorado on the historic Alpine Loop. Distances include a 50K, a marathon and an 8 mile out and back that pass ghost mining towns and reach California Pass near 12,926 feet.

A mountain trail event at Powderhorn Mountain Resort on July 18, 2026, with a *5K* climb gaining over 1,500 ft and a *15K* that repeats the ascent. Registration includes resort entry, a t-shirt, finisher item, post-race food, and a lift pas..

Experience the mountain trails of Aspen Snowmass with three distinct race distances. Runners can choose between a 50K trek across four mountains a 25K trail run or a 10K course starting from the Elk Camp Gondola.

A mountain road race in Silverton, Colorado on July 19, 2026 featuring a 12-mile summit route and an 11K out-and-back. The event includes jeep road climbs, a final scramble, aid stations, a cupless policy, and a six-hour time limit.

Creede 50 and 100 take place in Creede on July 25 and 26, 2026, offering 50 mile and 100 mile courses organized by Tempest Adventures. The event site provides runner information, course details, crew and pacer guidance, and support resource..

Grand Mesa Ultras on July 25, 2026 in Grand Mesa, Colorado features high-elevation trail races in three distances with single track mountain terrain, camping options, and post-race awards and amenities.