Nez Perce-Clearwater National Forest · Idaho
Begins at the forest's mile 0, 46.5778, -115.3777 - no trailhead mapped Drive to where the trail begins
No Fee. · season May to
The Horse Camp Trailhead serves as the north end of the popular Sand Mountain OHV Trail system. The actual trail begins on the north side of the 381 road while the trailhead is on the southern side. Some dispersed camping is available on a first come first serve basis.
The lines are the US Forest Service's National Forest System trails layer (public domain), read 2026-10-16 and simplified for the map; the length is the line's, end to end, and the class, surface, grade and tread width are the forest's own entries where it publishes them - a forest that publishes the centreline alone has none. The trailheads and the points along the way are the Service's recreation points, and the write-ups its own recarea text, unedited. Heights come from USGS 3DEP through Terrain Tiles on AWS (Mapzen/Tilezen), read along each line and rounded; a short trail on steep ground can be off by a few tens of feet. Closures change: check the forest's own site before you go.