Aspen Backcountry Marathon

The Leadville Trail 100 Mile Run, held annually in Leadville, Colorado, is a legendary ultramarathon known as the "Race Across the Sky." Established in 1983, this grueling 100-mile out-and-back course challenges runners with extreme Rocky Mountain terrain, starting at 10,200 feet and reaching a peak..

The Grand Traverse Mountain Run is a challenging 40-mile point-to-point ultramarathon from Crested Butte to Aspen, Colorado, traversing the Elk Mountains with over 6,000 feet of elevation gain. Held annually, the race follows the route of the Grand Traverse Backcountry Ski race, offering runners a r..

The Lead King Loop 25K is a scenic running, walking, or hiking event held in the heart of Colorado's Elk Mountain Range near Marble. Participants traverse a 25-kilometer loop around Lead King Basin, passing iconic landmarks such as the Crystal Mill and the Town of Crystal. The race takes place amid..

The Crested Butte Ultra, held in Crested Butte, Colorado, offers runners a challenging and scenic experience through the Gunnison National Forest. The event features three distances: a 50-mile, 55K, and 35K race. Participants traverse single-track trails that wind through mountain meadows, ridges, a..

The Golden Leaf Half Marathon is a scenic running event held annually in late September, starting at Fanny Hill in Snowmass and finishing at Koch Lumber Park in downtown Aspen, Colorado. The course follows the Government Trail, winding through beautiful Aspen groves, offering runners a picturesque a..

The Rubey Rescue Run is a 5K uphill trail race held annually in Aspen, Colorado, on Buttermilk Mountain. Participants start near the Buttermilk Mountain Lodge and ascend 1,700 feet to the Cliff House, finishing with breathtaking views of the Maroon Bells. The event welcomes runners with or without t..