Boise National Forest · Idaho

Lava Mountain

12 mi of trail, end to end · about 3,400 ft of climbing · 5,884 ft–8,363 ft · native material surface · trail No. 125001 · trail class 3 · typical grade trail_grade · tread 18-24 inches wide · hiking, horse, bike, motorcycle, e-bike · motorized use allowed

7,802 ft 8,321 ft · 4.0 mi high 8,361 ft

Trailheads Lower Lava Mountain Trailhead 5,858 ft Drive there · Lower Lava Mountain Trailhead off FS road 222 5,858 ft Drive there · Upper Lava Mountain Trailhead 7,261 ft Drive there

Upper Lava Mountain Trailhead the Forest Service's write-up

The Upper Lava Mountain Trailhead is a signed site with visitor information, loading/unloading ramp for ATVs and registration box. It serves Lava Mountain (#125) and Upper Sheep Creek (#123) trails.

All Trailheads have space for parking.

This trailhead on fs.usda.gov

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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.