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
Thru access — parking nearby. 39.31499, -76.79457 · directions
Daylight at the trailhead
On August 31, 2026 — the day this page was generated — first light reaches this trailhead at 6:06 a.m., the sun rises at 6:34 a.m. and sets at 7:39 p.m., and the last usable light fades about 8:07 p.m. (EDT) — 13 h 05 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 15.3-mile round trip takes roughly 5 h 55 min, so leaving the trailhead at sunrise puts you back around 12:29 p.m. — 7 h 10 min before sunset.
Loop options
- Thru Trail + More MORE Fun + Thru — 2.8 mi loop, 433 ft gain
- BGE Access + Social Trail + Thru — 4.2 mi loop, 569 ft gain
- Social Trail + Burnout + Thru — 5.4 mi loop, 544 ft gain
Nearby trails
- Ole Ranger — 1.3 mi
- Gray's Mill Trail — 3.9 mi
- Grist Mill — 4.8 mi
- Switchback — 6.1 mi