Aspen Backcountry Marathon

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

The race starts and finishes at Rio Grande Park, coinciding with the Rotary Club's Duck Derby festival, which features live music, food trucks, and family activities. Aid stations are limited, and runners are advised to carry GPS tracks. The event emphasizes a high alpine trail experience with spectacular Elk Mountain views. Visit the organization's website for the most recent information.