The Rut Training Run is open to anyone excited to follow a marked 10 or 15 mile course with aid stations on the 2nd half of the Rut 28K and 50K courses on Lone Peak at Big Sky Resort. Rut Training Runs participants do NOT need to be signed up for the 2019 Rut. These routes are not walks in the park. They are challenging in nature and are designed to prepare Rut Runners for the challenges of race day. Therefore, runners are expected to be able to complete at least a 10-mile mountain run with sections of exposure at altitudes up to 11,166ft in 5 hours or less.