Mount Greylock – Mount Williams loop from Harriman-and-West Airport
Mount Greylock – Mount Williams loop from Harriman-and-West Airport
3.3
(27)
80
runners
03:24
20.7km
1,270m
Running
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is right next to a parking lot.
Last updated: January 14, 2026
Waypoints
Start point
Parking
Get Directions
3.00 km
Viewpoint
Viewpoint
6.45 km
The Hopper
Viewpoint
11.7 km
Mount Greylock
Peak
15.6 km
Mount Williams
Peak
20.7 km
End point
Parking
Way Types & Surfaces
Way Types
14.3 km
5.87 km
551 m
< 100 m
Surfaces
10.9 km
9.82 km
< 100 m
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Elevation
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Weather
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Today
Tuesday 26 May
26°C
9°C
0 %
Additional weather tips
Max wind speed: 12.0 km/h
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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.