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Chugach National Forest

Ptarmigan Lake Tr

USFS trail 316

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.

3.5 mi · Typical grade 12 to 20%

About 200 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: 3.5 mi mapped
Grade: Typical grade 12 to 20%
Surface: native material
USFS-managed hiker season: June 1 through October 15
USFS-managed uses: Hiking
Motorized status: Non-motorized (USFS designation)

Designation

National trail designation

National forest

Chugach 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

About 220 ft of climbing one way, measured in the harder direction.

High point: About 950 ft
Low point: About 750 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%, inside a managed hiker season that runs June 1 through October 15. Tell the Trip Builder where you are headed and it assembles a day-specific kit with weather, daylight, and terrain in mind.

Data: U.S. Forest Service, retrieved 2026-07-09.

Ptarmigan Lake Tr — Alaska · Alpenstock

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