Beginning at Linton Lake Trailhead, Linton Lake Trail #3519 heads east, immediately entering the Three Sisters Wilderness. The trail begins in undulating terrain through a mixed conifer forest before switching back up a historic lava flow. The trail continues over the flow east to the northern edge of Linton Lake, ending where Obsidian Creek enters Linton Lake.
Note: Many user trails exist where Linton Lake Trail #3519 ends at Obsidian Creek. These user trails are not maintained.