Aspen Backcountry Marathon

The Aspen Backcountry Marathon, held in Aspen, Colorado, offers three challenging trail running distances: a 50K ultra, a marathon, and a heavy half-marathon. The courses run almost entirely on dirt trails with significant elevation gains, peaking above 10,000 feet, providing runners with stunning views of the Elk Mountains and Aspen city. The 50K includes an out-and-back to the McNamara Hut, part of the 10th Mountain Hut System.

The race starts and finishes at Rio Grande Park, coinciding with the Rotary Club's Duck Derby festival, featuring live music, food trucks, and family activities. The event emphasizes self-sufficiency with limited aid stations and requires a Colorado Outdoor Recreation Search and Rescue (CORSAR) card for participation. Visit the organization's website for the most recent information.