Maryland trails · Green Ash
Green Ash
A 1.8-mile out-and-back in Maryland, with 543 ft of climbing. Reaches Bootjack Spring and other spring/summit/viewpoint destinations. Managed by the state.
Elevation profile
Most of the climbing sits in the middle third — 77% of the ascent, between mile 0.6 and mile 1.2. It gives back about 325 ft along the way, so it rolls rather than climbing steadily.
3-D terrain
USGS 3DEP ELEVATION × ESRI WORLD IMAGERY · VERTICAL ×1.5
Reaches
- Bootjack Spring (spring)
- High Knob (summit)
- Frederick Overlook (viewpoint)
- North Frederick Viewpoint (viewpoint)
Getting there
Green Ash access — parking nearby. 39.46251, -77.49458 · directions
Daylight at the trailhead
On August 31, 2026 — the day this page was generated — first light reaches this trailhead at 6:09 a.m., the sun rises at 6:37 a.m. and sets at 7:42 p.m., and the last usable light fades about 8:10 p.m. (EDT) — 13 h 06 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 3.6-mile round trip takes roughly 1 h 53 min, so leaving the trailhead at sunrise puts you back around 8:30 a.m. — 11 h 12 min before sunset.
Loop options
- Black Locust + Green Ash + Catoctin Trail — 1.2 mi loop, 377 ft gain
- Black Locust + Green Ash — 2.0 mi loop, 441 ft gain
- Red Maple + Black Locust + Green Ash — 2.5 mi loop, 660 ft gain
Nearby trails
- Yellow Poplar — 0.6 mi
- Wayne's Trail — 4.4 mi
- Big Red — 8.9 mi
- Bobs Hill — 9.1 mi