Thunder Mountain came up repeatedly from riders looking for a lift-served option in the northeast. The Berkshire East hill gives you a proper quad-served gravity day rather than a shuttle-only setup, which is still rare in New England. I added it as a standalone post because the trail system is distinct enough to warrant its own page rather than padding a US roundup.
The Berm guide now links the trail network, lift count and access details directly. Use it to plan the day, then open Berkshire East's live operating calendar before committing to the drive.
Thunder Mountain Bike Park
Berkshires · Charlemont, Massachusetts
The park runs a clear progression from Sugar Line at the top through blue flow and technical black lines to the jump terrain lower down. Berm currently maps 14 official trail segments served by the T-Bar Express Quad and Summit Quad, which puts the whole hill within reach without a long hike or self-shuttle loop. That lift access is the main argument for Thunder Mountain over the state's pedal-only networks.
Thunder uses flexible date-based pricing, so early purchase tends to lock in the lowest rate and popular summer weekends can sell out. The 2026 season runs from May through October, but autumn hours and the closing date move with conditions. Check the live bike-park report at Berkshire East before travelling rather than assuming the full schedule is still running.
Planning a trip here?
Take Berm with you.
Save the park, keep the trail map close and track every lap with Berm.