West Fork Loop (FR 166-B) in MT -- Camping Rules & Access
West Fork Loop (FR 166-B) in MT
Road corridorCuster Gallatin NF
1.8 mi from Big Sky
Maps 7,173 ft
Camping permission not confirmed
Miles 0–7 cross land the Forest Service doesn't manage; camping there needs the landowner's permission.
Custer Gallatin National Forest ↗
Stay limit: 16 consecutive days · 32 days total per calendar year · then move 0.5 mi
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Road Access
Difficult
- 7.1 of this road’s 8 miles are maintained for high-clearance vehicles, mostly gravel with 0.7 miles of dirt.
- Near Summit Lake Trailhead.
- Estimated climb: 1,600 ft over 8 miles through 18 switchbacks, with sustained grades near 12% and pitches to 20%.
- Terrain estimates show roadside drops of up to ~110 ft on the downhill side.
- Dead-end road; turnaround space is not mapped.
Setting
Some privacy
- Moderately separated here.
- Wilson Peak stands 3,528 ft above the map pin, 2.9 miles north.
- Estimated night sky: Bortle 4, a rural sky with a glow on the horizon.
Climate averages
October normals 26–50°F, 2.5″ precipitation. Monthly averages, PRISM 1991–2020.