2.9 mi from the trailheadGlacier Basin Campground
Campground · Colorado

16.5 mi out & back · 4,250 ft gain · 10,702 ft high point · Very hard
From Bear Lake Trailhead via the Bear Lake Loop Trail, the Flat Top Mountain Trail, the Bear Lake To Bierstadt Junction Trail, and the Flattop Mountain Trail (0.9 mi)
In Rocky Mountain National Park · Colorado · OpenStreetMap contributors
This out and back route from Bear Lake Trailhead reaches Fern Lake in Rocky Mountain National Park, climbing 4,250 feet and passing Odessa Lake and multiple waterfalls.
4,250 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 · Colorado
13.7 mi out & back · 5,290 ft gain · Very hard
Rocky Mountain National Park · Camp under a mile away
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Sun: Slight Chance Light Snow then Rain And Snow · wind 8 mph SSW