Flattop Sm Loop
USFS trail SNO-R8821
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.
4.9 mi · Typical grade 12 to 20%
About 1,150 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
- 4.9 mi mapped
- Grade
- Typical grade 12 to 20%
- Surface
- snow
- Accessibility
- Not listed by the USFS as accessible
- Designation
- National trail designation
- National forest