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Distance
18.3 mi
Duration
1h 35m
Checkpoints
4
Created
JUL 5, 2026
The road
Jewel Cave National Monument in Edgemont, South Dakota is graded at 194 corners, about 10.6 for every mile you drive. 31 of them are genuinely tight (16% of the road), and the sharpest turns in at an 11 m radius.
- Graded corners
- 194
- Tight (1–2)
- 31
- Tightest radius
- 11 m
- Corners per mile
- 10.6
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
4
- #01
Dewey Road
- #02
Edgemont
- #03
Forest Road 277
- #04
Jewel Cave National Monument
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