Greenhorn
USFS trail 7156
Trail facts
- Length
- 8.2 mi mapped
- Grade
- Typical grade 12 to 20%
- Surface
- native material
- Motorized status
- Motorized use designated by the USFS
- Designation
- National trail designation
- National forest
- Sawtooth 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.
This record is a snapshot of U.S. Forest Service data retrieved on 2026-07-09. It does not reflect current closures, conditions, or seasonal orders. Check with the local ranger district before you go.
Elevation
- High point
- About 8,500 ft
- Low point
- About 5,950 ft
Estimates, derived from US government elevation data sampled along the USFS-mapped route, computed 2026-07-11. We have not measured these figures in the field.
Plan a day on this trail
A day here means a typical grade of 12 to 20%. Tell the Trip Builder where you are headed and it assembles a day-specific kit with weather, daylight, and terrain in mind.
Build your kitData: U.S. Forest Service, retrieved 2026-07-09.