Salmon-Challis National Forest · Idaho, Montana
Trailhead Big Eightmile Campground/Trailhead Drive there
no fee · season 5/15 to
10 campsites with picnic tables and fire rings on Big Eightmile Creek.
Several dirt roads and trails in the area are open to hiking and mountain biking. Travel up Eighmile Creek Canyon, up Dairy Creek Canyon, or to the historic Blue Jay Mine.
Never go into abandoned mine shafts!
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.