Lake · William O. Douglas Wilderness
Big Dewey Lake
5.1 mi round trip1,303 ft gainModerateDay hike: Free self-issueOvernight: Free self-issue
Get alerts for this hikePermits and reservations
Day hikeFree self-issue
Fill out the free wilderness permit at the trailhead kiosk.
OvernightFree self-issue
No reservation. Use the same free permit, keep groups to 12 or fewer, and camp at least 200 ft from water.
William O. Douglas Wilderness rules from the Forest Service. Matched from official wilderness boundaries. Always confirm with the land manager before you go.
About the trail
Distance5.1 miRound trip, out and back
Elevation gain1,303 ftTotal climb, round trip
Lake elevation5,877 ftFrom elevation data
Overview
Big Dewey Lake is a lake reached by a 5.1-mile round trip from Naches Peak Loop Trailhead. The route follows Naches Peak Loop Trail, then Pacific Crest Trail to the shore.
Photos from hikers
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What you need
Parking and passes
National park entrance fee: $30 per vehicle for 7 days, the $55 Mount Rainier annual pass, or an America the Beautiful pass. No timed-entry reservation is required in 2026.
Buy an entrance passGetting there
The hike starts at Naches Peak Loop Trailhead. Save directions offline before you leave, since mountain roads often lose cell service.