3.2 mi of trail, end to end · about 1,500 ft of climbing · 4,598 ft–6,112 ft · native material surface · trail No. 113 · trail class 3 · typical grade 12-20% · tread 18-24 inches wide
TrailheadTrailhead: Killen Creek 4,597 ft Drive there
Trailhead: Killen Creek the Forest Service's write-up
Provides access to: Killen Creek Trail #113 which enters Mt. Adams Wilderness from the north.
Parking area has a gravel surface and capacity of eight vehicles.
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.