Klamath National Forest · California
Trailhead Long Gulch Trailhead Drive there
Trailhead is off of Forest Rd. 39N08 several miles west of Carter Summit. Trailhead provides access to Trinity Alps Wilderness, with loop hikes (Long Gulch Trail and Trail Gulch Trail) and longer hikes southwards into the Shasta-Trinity National Forest portion of the Trinity Alps possible.
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.