Chainsaw
USFS trail 81
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.
2.7 mi · Typical grade 5 to 8%
About 400 ft between the route's high and low points. An estimate from USGS elevation data, computed 2026-07-10; not measured in the field.
Trail facts
- Length
- 2.7 mi mapped
- Grade
- Typical grade 5 to 8% (USFS trail class TG02)
- Surface
- native material
- USFS-managed hiker season
- June 1 through November 15
- USFS-managed uses
- Hiking, Bicycling
- Motorized status
- Non-motorized (USFS designation)
- Designation
- National trail designation
- National forest
- Arapaho and Roosevelt National Forests
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
About 370 ft of climbing one way, measured in the harder direction.
- High point
- About 9,200 ft
- Low point
- About 8,800 ft
Estimates, derived from USGS elevation data sampled along the USFS-mapped route, computed 2026-07-10. We have not measured these figures in the field.
Lake Dorothy is about 11 miles away straight-line. We hike it, verify conditions, and keep a full guide for it.
Read the full guidePlan a day on this trail
A day here means a typical grade of 5 to 8%, inside a managed hiker season that runs June 1 through November 15. 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.