Snowmass Tree-O | 2k + 5k + 10k + 17k Challenge | Snowmass, CO

The Snowmass Tree-O | 2k + 5k + 10k + 17k Challenge | Snowmass, CO offers four distances, 2K (1.2 miles), 5K (3.1 miles), 10K (6.2 miles) and the 17K challenge (10.6 miles), through the mountain landscapes of Snowmass Village, Colorado, on August 6–7, 2027. The 5K and 2K take place on August 7, and the 17K challenge combines the 5K, 2K and 10K.

The course runs at high altitude, among the forests and terrain typical of the Rockies, offering an unspoiled natural setting for every format. The range of distances suits both a first taste of trail running and a real endurance challenge for more experienced runners. Altitude is the main difficulty, calling for careful management of breathing and effort. The short formats make it family-friendly, while the longer distances keep real climbing.