5.2 mi from the trailheadRIVERSIDE AT DETROIT (Willamette National Forest, OR)
Campground · Oregon

20.4 mi out & back · 4,202 ft gain · 5,386 ft high point · Very hard
From Marion Lake Trailhead via Marion Lake (2.1 mi)
In Willamette National Forest · Oregon · U.S. Forest Service
Blue Lake out and back reaches Duffy Lake in Willamette National Forest via Marion Lake Trail, passing Blue Lake, Lake Ann, and Jenny Lake along the route.
4,202 ft of gain round trip.
The closest places to sleep, measured from the trailhead.
Ranked the same way, within twenty-five miles.
What the trail reaches, measured from the start.
The hike from its start, the approach dashed. Drag with two fingers, or hold a key to zoom.
Trail data: USFS, NPS, © OpenStreetMap contributors (ODbL). Elevation: USGS 3DEP via Mapzen terrain tiles. Nearby reading: Wikipedia. Photos: Wikimedia Commons contributors, licensed as shown on each photo. Download the trail and feature data.
Campground
12.5 mi loop · 1,563 ft gain · Hard
Willamette National Forest · Camp under a mile away
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Today: Partly Sunny · wind 1 to 5 mph SW
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