Aspen, Colorado · Saturday, August 1, 2026
The Aspen Backcountry Marathon is a 50k, half marathon, marathon, and running event held on Saturday, August 1, 2026. It is located at Courthouse Trail in Aspen, Colorado.
The Audi Power of Four Trail Run offers runners a scenic mix of trails across the mountains of Aspen Snowmass. Registrants can choose between the 3 distances offered including 50K, 25K & 10K.
Join us on Sunday, October 4, for a Halloween themed 5K run or walk beginning at Koch park and winding through the Marolt foot path and open space with your furry friends, or without! This is a timed race with cash prizes for top 3 female and male finishers. All net proceeds benefit the Friend of the Aspen Animal Shelter. Please have your pets come in costume! There will be prizes for best costumes, raffle prizes, food trucks.
Entry Fees:
*Adults – $65
Kids (12 and under) – $25
*Includes a Rubey Rescue Run insulated water bottle + other sponsor goodies
parkrun is such a simple concept: turn up every Saturday and volunteer, walk, jog or run 5k.