Trail Running calendar near Carbondale 2026-2027

A mountain race day in Marble, Colorado on September 13, 2026, with a 25K loop, an 8-mile Quarry Climb, and a kids 2.5K; entries include a shirt, post-race BBQ, beer, and a finisher medal, and proceeds benefit Marble Charter School.

A two-day ultramarathon in Steamboat Springs on September 18 and 19, 2026 featuring 100 mile and 50 mile trail races with limited fields and multi hour cutoffs. The race is a charity event with a significant prize purse and active volunteer..

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..

Experience desert style single track and forest roads with views of the Collegiate Peaks in Buena Vista. Choose between 50k or 30k distances as part of the multi sport 14er Fest.

A scenic half marathon from Fanny Hill in Snowmass along the Government Trail through Aspen groves to Koch Lumber Park in downtown Aspen, presented by ACG and hosted by the Ute Mountaineer and the City of Aspen each late September.

A point to point trail race from Vail to Minturn with 26K and 14K courses across Vail Mountain. Both routes feature alpine singletrack, scenic views of Mt. Holy Cross, staffed aid stations and a post race lunch voucher.

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..

A high alpine 50k near Nathrop Colorado that follows the Colorado Trail, reaches about 13,100 ft, and covers roughly 33 miles with 7,000 ft of ascent. The race is organized by Freestone Endurance on permitted public lands.

A fall trail event in Buena Vista, Colorado on September 27, 2026 offering a 14K trail race with over 500 feet of elevation gain and a 5K along the Arkansas River. Both races start and finish at Vendor Village near the Eddyline Beer Garden.

Sage Burner Trail Race on October 3, 2026 in Gunnison Colorado offers 50K, 28K and 15K courses through Hartman Rocks with technical slickrock, singletrack and wide mountain views.

A point to point trail marathon and 30K on October 3, 2026, from Crawford State Park to Paonia. The event raises funds for the Nature Connection Summer Camp Scholarship Fund and includes shuttle service and on site packet pickup.

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 Aspen event with a timed 3.5 mile trail run and a 1 mile walk, pet-friendly course through Marolt foot path and Moore open space, water stations, costume prizes, raffle prizes, food trucks, and proceeds to the Aspen Anima..

A trail running event in Buena Vista on May 30, 2027, offering marathon, half marathon, and 9k distances and supporting local nonprofits during CKS Paddlefest.