Uphill only! Starting at the River Run Plaza (Sun Valley ski area base area) head past the bike rental shop then to the right of the River Run Express chair lift. The trail parallels the Big Wood River briefly before switch backing up the sides of a heavily wooded, shady valley. Emerge onto grassy hillsides for a hot, dry climb to the wooden overlook platform. Continue to ascend across numerous ski runs, where the views become increasingly expansive the higher you go.
Small aspen groves alternate with stands of mature evergreens as the climb continues past abundant wildflowers. Use caution when crossing the two downhill bike runs (Traverse Trail
and Saddle-Up Trail). Just after the junction with the hiking-only Roundhouse Connector trail you'll find the stone Louis Stur memorial and water fountain.
The trail surface is generally packed dirt and small gravel, with only occasional short sections of looser rock. Mercifully, the climb ends just west of the top of the Challenger ski lift where the reward is magnificent views in all directions.