3.4 mi from the trailheadPost Creek Guard Station
Campground · California
8.8 mi out & back · 2,540 ft gain · 7,759 ft high point · Hard
Via Pettyjohn (2.8 mi)
In Trinity National Forest · California · U.S. Forest Service
This out-and-back summits Black Rock Mountain at 7,759 feet via Pettyjohn, gaining 2,540 feet in Trinity National Forest.
2,540 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 · California
14.0 mi out & back · 4,614 ft gain · Very hard
Mendocino National Forest · Camp 8 mi away
Hikes that read like this one, wherever they are.
7.3 mi out & back · 1,934 ft gain · Hard
Trinity National Forest · Camp 3 mi away
19.9 mi one way · 6,521 ft gain · Very hard
Trinity National Forest · Camp 6 mi away

8.7 mi out & back · 4,932 ft gain · Very hard
Trinity National Forest · Camp 2 mi away
10.3 mi out & back · 5,010 ft gain · Very hard
Trinity National Forest · Camp 6 mi away
Today: Mostly Sunny · wind 2 to 7 mph S