1.5 mi from the trailheadGlacier Basin Campground
Campground · Colorado
4.9 mi out & back · 1,524 ft gain · 10,302 ft high point · Moderate
From Bierstadt Lake/Storm Pass Trailhead via Sprague Lake Connector Trails (0.4 mi)
In Rocky Mountain National Park · Colorado · National Park Service
Boulder Brook Trail is a 4.9-mile out-and-back route from Bierstadt Lake/Storm Pass Trailhead in Rocky Mountain National Park, climbing 1,524 feet.
1,524 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. 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
Hikes that read like this one, wherever they are.

5.4 mi out & back · 958 ft gain · Moderate
Rocky Mountain National Park · Camp 2 mi away

3.6 mi out & back · 783 ft gain · Moderate
Rocky Mountain National Park · Camp 2 mi away

8.5 mi out & back · 1,804 ft gain · Hard
Rocky Mountain National Park · Camp 1 mi away

5.8 mi out & back · 600 ft gain · Moderate
Rocky Mountain National Park · Camp 1 mi away
Tue: Mostly Sunny · wind 3 to 20 mph W