Trail Running calendar near Glenwood Springs 2026-2027

The Cirque Series at Arapahoe Basin on Sept 5, 2026 is a 9.4 miles mountain trail race with 2,211 ft of ascent on approved White River National Forest trails. The field is capped at 600 runners and includes a branded hat, bib and medal.

Experience a high altitude trail run starting at 10,000 feet on Rabbit Ears Pass. Runners navigate a mix of forest roads and single track trails with 1,200 feet of elevation change through scenic Colorado terrain.

Trail races on Meadow Mountain in Minturn offering 11K and 5K courses on singletrack and dirt trail, with aid stations, post-race refreshments, and series awards.

Mountain trail and road races in Marble, Colorado featuring a 25K Lead King Loop, an 8 mile Quarry Climb, and a kids 2.5K with proceeds to Marble Charter School.

Two days of trail ultramarathons in Steamboat Springs offering 100 mile and 50 mile distances, limited fields, time cutoffs, and a $100,000 prize purse.

A mountain ultramarathon in Crested Butte, Colorado on September 26, 2026, offered in 35K, 55K and 50 mile distances. Courses run through Gunnison National Forest with single track trails, alpine meadows, cupless aid stations, and on course..

A half marathon from Fanny Hill in Snowmass along the Government Trail through aspen groves to Koch Lumber Park in downtown Aspen.

A point to point trail race from Vail to Minturn with 26K and 14K options across Vail Mountain, high alpine singletrack, staffed aid stations and postrace awards.

A *5K* trail run on Town of Breckenridge Trails that finishes at Blue River Plaza on Main Street during Breckenridge Oktoberfest. Field limited to 300 runners; first 250 registrants receive a long-sleeve technical tee and 21+ entrants get a..

Trail races of 50K, 28K and 15K take place in Hartman Rocks near Gunnison Colorado on October 3 2026. The course mixes slickrock, singletrack and doubletrack with wide mountain and basin views.

A point-to-point trail marathon and 30K in Colorado’s North Fork Valley at peak fall color, with mountain climbs to Inter-Ocean Pass and proceeds funding summer camp scholarships.

Experience the scenic single track trails of Steamboat Springs during the Emerald Mountain Trail Run. Choose between the 4 mile or 12k distances through aspen groves to support the local Boys and Girls Club.

The Camp 4 Coffee Cart to Cart Trail Race will take place in Crested Butte on Saturday 3 October 2026. You can run between 10 and 19 miles.

A Halloween themed community event in Aspen on October 4, 2026, with a timed 5.6K run and a 1 mile walk around Koch Park and Marolt open space. Leashed dogs are welcome and net proceeds benefit the Friends of the Aspen Animal Shelter.

A chip-timed 5k at Colterris Winery in Palisade, Colorado, with a two-lap cross country course, race swag including a collapsible wine glass and finisher medal, and a charity partnership with RiversEdge West.

A three day dirt festival in Alma, Colorado at 10,600 feet featuring mountain bike races, trail running, an off road duathlon, free kids races, and weekend camping in an alpine meadow.

Three day stage race offering Half Pint and Full Pint options July 26 to 28 2027 across three stages with published race guide and support services.