Massachusetts trails · Appalachian Trail/Long Trail
Appalachian Trail/Long Trail
A 11.4-mile out-and-back in Massachusetts, with 2,754 ft of climbing. Reaches Mount Williams and other summit/viewpoint destinations. Managed by the U.S. Forest Service.
Elevation profile
Most of the climbing sits in the middle third — 75% of the ascent, between mile 3.8 and mile 7.6. It gives back about 2,484 ft along the way, so it rolls rather than climbing steadily.
3-D terrain
USGS 3DEP ELEVATION × ESRI WORLD IMAGERY · VERTICAL ×1.5
Reaches
- Mount Williams (summit)
- Mount Fitch (summit)
- East Mountain (summit)
- Mount Greylock (summit)
- Adams Overlook (viewpoint)
Getting there
Thunderbolt Trail access — parking nearby. About 52 min drive (17 mi) from Pittsfield. 42.64219, -73.16240 · directions
Daylight at the trailhead
On October 14, 2026 — the day this page was generated — first light reaches this trailhead at 6:35 a.m., the sun rises at 7:04 a.m. and sets at 6:12 p.m., and the last usable light fades about 6:40 p.m. (EDT) — 11 h 08 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 22.8-mile round trip works out to roughly 11 h 11 min of walking — more than a single day of daylight here, so plan it as an overnight or hike it in sections.
Loop options
- APPALACHIAN TRAIL + Appalachian National Scenic Trail + APPALACHIAN TRAIL/LONG TRAIL — 13.5 mi loop, 3,337 ft gain
- Unnamed trail + APPALACHIAN TRAIL/LONG TRAIL + APPALACHIAN TRAIL — 2.7 mi loop, 1,393 ft gain
- APPALACHIAN TRAIL + APPALACHIAN TRAIL/LONG TRAIL — 2.1 mi loop, 660 ft gain
Across the border
- Continues into VT as APPALACHIAN TRAIL/LONG TRAIL — view on the map
- Continues into VT as Appalachian National Scenic Trail — view on the map
Nearby trails
- Mahican Mohawk Trail — 6.6 mi
- Taconic Trail — 7.0 mi
- Appalachian Trail — 11.0 mi
- Notchview — 12.0 mi