Lolo Pass
US 12Lolo to Kooskia · Idaho
Distance21.4mi · 34 km
Drive time43 minon the road
DifficultyModerate
MountainForestValley
Winding river-canyon climb over the Bitterroot crest
US 12 follows the Lochsa River and climbs to Lolo Pass at 5,233 feet on the Idaho-Montana line. The two-lane road is paved and famously signed for ninety-nine miles of curves through forested Rocky Mountain canyon. Mind the limited services, logging trucks, and winter snow.
Where it runs
LoloStart · Idaho
KooskiaEnd · United States
Character
Corners90bends
Tightness5of 10
Max gradient7%≈ 1-in-14
Hairpins0tight bends
Climb528 mtotal ascent
Summit1604 mhighest point · 5262 ft
SummerAutumn
Elevation
512 m rangeKnow before you go
- Logging and freight trucks
- Few services for miles
- Winter snow and ice
Sources
Nearby roads
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