Mt. Baker-Snoqualmie National Forest · Washington
Tomyhoi Lake
3.5 mi of trail, end to end · native material surface · trail No. 686 · trail class 3 · typical grade 12-20% · tread 18-24 inches wide · hiking
Trailhead Tomyhoi/Yellow Aster Butte Trailhead Drive there
Tomyhoi/Yellow Aster Butte Trailhead the Forest Service's write-up
$5/vehicle/day
Provides access to: Tomyhoi Lake Trail 686 , Yellow Aster Butte Trail 686.1 which access Mt. Baker Wilderness.
Restrictions <a href="http://www.fs.usda.gov/detail/mbs/specialplaces/?cid=fsbdev7_001639 ">Wilderness regulations apply</a> within Mt. Baker Wilderness.
This trailhead on fs.usda.gov
Every trail in Mt. Baker-Snoqualmie National Forest
About this trail's facts
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.