Plan a Mount Greylock visit around one question: is the summit road open? From May 16 through October 30, 2026, you can drive to the 3,491-foot summit, visit the tower and Bascom Lodge, and start hikes from the high trailheads. The rest of the year the park is still open dawn to dusk, but you'll reach the top on foot from a year-round trailhead.
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Mount Greylock is in the northern Berkshires; the National Park Service puts it about three hours west of Boston. Start at the visitor center, 30 Rockwell Road, Lanesborough, MA 01237. DCR lists no public transit, so plan on a car. Every lot is on our parking page.
Closures and current dates are on the DCR page for Mount Greylock State Reservation, the source of record. Quick answers are on our FAQ.
Best time: Late May to October, while the summit road, tower and lodge are open. September and October are the pick: the road is open, and the foliage usually nears its peak around Columbus Day weekend. October weekends are also the busiest, and DCR warns of congestion on the summit roads.
Temperatures are NOAA 1991-2020 normals at North Adams Harriman Airport, about 650 feet up. The summit usually runs around 10 degrees colder (see the weather page). The 2026 dates are the latest DCR has published; they change each year.
Routes built from DCR's Suggested Day Hikes. The times are DCR's, for an average hiker.
90 Minutes
Park at: Visitor Center
DCR's shortest suggested hike. It stays open when the summit road is closed.
Half Day
Park at: Campground Parking Lot
DCR calls this its half-day summit hike. It needs the auto road, so it runs late May to about November 1.
Full Day
Park at: Haley Farm Trailhead
DCR rates it aggressive and says to be ready for a long day. Start early and watch the sunset time.
Campsites book only through ReserveAmerica. If they're full, or you'd rather have a bed, here are hotels and rentals near the park.
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Facts from the DCR page for Mount Greylock State Reservation.