Black Rock & Thurston Griggs Trail is a 3-mile out-and-back in South Mountain State Park near Bagtown, MD. The route reaches Black Rock at the turnaround, 1.5 miles in. It climbs 918 ft, with sections as steep as 21% grade, and is mostly dirt. It scores 48/100 on the Ambleway Wildness scale: green fringe.
Elevation
0 mi863 – 1,791 ft · steepest grade: 21%3.2 mi
Getting there
Trailhead: Thurston Griggs Trail 39.58301, -77.60324
Nearest town Bagtown, MD
Directions
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Black Rock & Thurston Griggs Trail
3 mi · ▲ 918 ft · 1 hr 28 min
Elevation 864–1,791 ft
Out & Back · South Mountain State Park
Trailhead: Thurston Griggs Trail · 39.58301, -77.60324
Weather Sep 20: sunrise 6:57 AM · sunset 7:13 PM
Parking lot at the trailhead
- Start on Thurston Griggs Trail, heading E.
- 0.9 miTurn right, heading SE.
- 0.6 miBear right, heading SW.
- 150 ftReach Black Rock, then turn around and head back the way you came.
- 150 ftBear left, heading W.
- 1.5 miArrive back at the trailhead.
Each distance is the walk from the previous step. Tap a step for a map of its junction.
Trail surface
97% dirt1% paved2% unspecified
Weather
Sunrise 6:57 AMSunset 7:13 PM
Good to know
- Parking lot at the trailhead
More from Thurston Griggs Trail Trailhead
- Monument Knob–Appalachian National Scenic Viewpoint, 4 sights 15.1 mi · ▲ 2,597 ft
- South Mountain State Park Sunset Point & Thurston Griggs Trail 9.6 mi · ▲ 1,756 ft
- Old Road via Thurston Griggs Trail 4.3 mi · ▲ 1,316 ft
- Annapolis Rock–South Mountain State Park Viewpoint, 3 viewpoints 5.5 mi · ▲ 1,081 ft
- Thurston Griggs Trail 2.6 mi · ▲ 826 ft
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