South Grassy Mt
USFS trail 122
The route in 3D
Fly this trail over real terrain
USGS and partner elevation data build the terrain, and the US Forest Service centerline draws the route.
1.1 mi
About 300 ft between the route's high and low points. An estimate from US government elevation data, computed 2026-07-11; not measured in the field.
Trail facts
- Length
- 1.1 mi mapped
- Surface
- native material
- Motorized status
- Motorized use designated by the USFS
- Designation
- National trail designation
- National forest
- Helena-Lewis and Clark National Forest
Length is the trail as the Forest Service maps it, not a trip distance. Hike out and back and you will cover it twice; check the shape of the route before you count on the figure.