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. About 17 min drive (8 mi) from Frederick. 39.46251, -77.49458 · directions
Daylight at the trailhead
On October 14, 2026 — the day this page was generated — first light reaches this trailhead at 6:51 a.m., the sun rises at 7:18 a.m. and sets at 6:32 p.m., and the last usable light fades about 6:59 p.m. (EDT) — 11 h 14 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 9:12 a.m. — 9 h 21 min before sunset.
Loop options
- Green Ash + Black Locust + Red Maple — 3.0 mi loop, 823 ft gain
- Green Ash + Catoctin Trail + Yellow Poplar — 3.4 mi loop, 636 ft gain
- Yellow Poplar + Catoctin Trail + Green Ash — 3.4 mi loop, 642 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