Pratt Lake Trail

Pratt Lake Trail (#1007) is a long out-and-back hike from the Granite Mountain/Pratt Lake Trailhead area in the Mt. Baker-Snoqualmie National Forest into Pratt Lake Basin. It’s mapped as hiking-only, with the foot surface designated as path and the mapped surface described as dirt.

Expect roughly 11 miles roundtrip with about 2,300 ft of elevation gain, and plan for a longer day hike pace. The route is managed under the Alpine Lakes Wilderness regulations once you’re on the trail system.

Early in the hike, the trail runs through thick evergreen forest for about the first few miles. As you climb, it transitions into higher alpine terrain where the route reaches lake basins and junctions that let you access nearby destinations like Ollalie Lake and Island Lake (with Pratt Lake reached by staying on the Pratt Lake Trail’s continuation).

The hike includes multiple stream crossings, plus root-heavy switchbacks and some exposed granite in places. Later sections get more open and exposed as you descend toward the Pratt Lake campgrounds/day-use area.

Dogs are allowed but must be leashed. The mapped trail visibility is excellent, and the route is designated for hiking and long-distance use rather than biking.

Access is from the Pratt Lake trailhead parking area near North Bend via I-90 exit 47. Day-use/parking payment is handled at the site (NW Forest Pass and other recreation passes are accepted), and an Alpine Lakes Wilderness permit is required for self-issue at the trailhead (no fee).

More information: Visitor information, Visitor information, Pratt Lake Basin — Washington Trails Association