Thunder Mountain (FR 440) in ID -- Free Camping & Overnight Parking in Idaho

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Thunder Mountain (FR 440) in ID

Boise NF, Cascade Ranger District
5,261 ft
Maps
Overnight camping allowedRUTTED
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A 16.8-mile stretch of dirt National Forest road in Valley County, ID.

Boise National Forest, Cascade Ranger District allows dispersed camping here -- 14-day limit in any 30 days.

All 16.8 miles in are maintained only for high-clearance vehicles. Dirt the whole way in (16.8 miles). Climbs 5,600 ft over 16.8 miles -- sustained grades near 18%, with pitches to 26%. Stretches run along a shelf with a drop of up to ~140 ft on the downhill side. Winds through 11 switchbacks. Dead-end road -- no mapped turnaround; expect to back out or unhitch.

Shell Rock Peak stands 3,295 ft above the site, 3.0 miles west. Johnson Creek runs 0.1 mi off. Private here -- the nearest through road is 1.4 miles off. The nearest town, McCall, is 30 mi off.

September normals 35–72°F, 1.2″ rain. Monthly averages, PRISM 1991–2020.

Nearby Spots
Eastside Road (FR 502) in IDForest Road Road39.2miHardscrabble Campground in IDCampground43.5miItd Rock Dump-Lower (FR 025ITD-1) in IDDispersed Camping43.7miLakeview Cg (FR 70641) in IDDispersed Camping44.9miStanley Lake Campground in IDCampground45.0mi
Fire restrictions

Set by Boise National Forest, Cascade Ranger District. Stage 1 and 2 orders change within days -- check the current order before you build a fire.

fs.usda.gov
Sources checked August 2026Something wrong here?