Maryland trails · Thru
Thru
A 7.7-mile out-and-back in Maryland, with 252 ft of climbing. Reaches Putney's Bridge. Managed by the state.
Elevation profile
The climbing leans toward the first third: 47% of the ascent falls between mile 0.0 and mile 2.6. It gives back about 453 ft along the way, so it rolls rather than climbing steadily.
3-D terrain
USGS 3DEP ELEVATION × ESRI WORLD IMAGERY · VERTICAL ×1.5
Reaches
- Putney's Bridge (viewpoint)
Heads up
Getting there
Social Trail access — parking nearby. About 36 min drive (20 mi) from Baltimore. 39.33293, -76.86874 · directions
Daylight at the trailhead
On October 14, 2026 — the day this page was generated — first light reaches this trailhead at 6:49 a.m., the sun rises at 7:16 a.m. and sets at 6:30 p.m., and the last usable light fades about 6:57 p.m. (EDT) — 11 h 14 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 15.4-mile round trip takes roughly 5 h 56 min, so leaving the trailhead at sunrise puts you back around 1:12 p.m. — 5 h 18 min before sunset.
Loop options
- More MORE Fun + Thru + Thru Trail — 3.2 mi loop, 429 ft gain
- Thru + Social Trail + Middle Thru Trail — 4.5 mi loop, 378 ft gain
- Thru + Burnout + Social Trail — 3.5 mi loop, 234 ft gain
Nearby trails
- Switchback — 2.1 mi
- Gray's Mill Trail — 6.8 mi
- Grist Mill — 8.0 mi
- Ridge — 10.3 mi