4.8 mi of trail, end to end · about 3,700 ft of climbing · 5,401 ft–9,109 ft · native material surface · trail No. 1456 · trail class 3 · typical grade 12-20% · tread 24-36 inches wide · hiking, bike · seasonal: hiking 07/01-10/31
Mt. Thielsen Trailhead / Sno-Park the Forest Service's write-up
$5/vehicle/day from May 1 through October 31. <a href="https://www.oregon.gov/ODOT/DMV/pages/vehicle/sno_park_permits.aspx">Oregon State Sno-Park Parking Permit</a> required November 1 through April 30. · season Year Round to
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.
