Address coordinates are for trailhead parking lot.
A long, dirt road climbing some 20 miles up Lost Horse Canyon provides unique access to the central mountains of the Selway-Bitterroot Wilderness. In summer, even an average passenger car can make it all the way to the Montana/Idaho border on the Bitterroot crest. In winter, snowmobilers can reach high-elevation alpine terrain and terrific skiing opportunities on the edge of the designated wilderness area.
The canyon is also climber's heaven, with Yosemite-quality boulders dotting a wide valley beneath towering wilderness routes. Recent gravel mining operations at the eastern end of the canyon have threatened some key crags, uniting local climbers in opposition to the project.
Dozens of unimproved campsites line the road, and two developed campgrounds, Schumaker and Bear Creek Pass, await travelers at top of the canyon.