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Distance
403.5 mi
Duration
8h 12m
Checkpoints
3
Created
JUL 7, 2026
The road
US-12 in White Sulphur Springs, Montana is graded at 1,571 corners, about 3.9 for every mile you drive. 144 of them are genuinely tight, and the sharpest turns in at a 15 m radius. The longest straight runs 8.5 miles, so there is room to breathe between the technical sections.
- Graded corners
- 1,571
- Tight (1–2)
- 144
- Tightest radius
- 15 m
- Corners per mile
- 3.9
Corners are graded from the route’s own geometry on the rally 1–6 scale, where 1 is a hairpin. Road & Rally calls them out as you drive.
Checkpoints
3
- #01
301 West Main Street
- #02
5841-5875 Nez Perce National Historic Trail
- #03
US-12
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