Only a small, roughly 20.6-acre sliver of this 1,000-acre state park falls in Chelmsford, off Proctor Road; the main entrance, working dairy farm, and campground are in Carlisle, reached from Lowell Street.
What to expect
Trails
Part of a 1,000-acre park with more than 20 miles of trails; the Chelmsford sliver connects via Thanksgiving Forest's trail network along River Meadow Brook.
Parking
Not confirmed · unconfirmed
Dogs
Dogs are welcome on leash on park trails.
Accessibility
Not documented for the Chelmsford parcel; the main Carlisle entrance and Hart Barn area have separate accessibility info through DCR.
Managed by
Department of Conservation and Recreation (DCR)
WebsiteGetting in
Parking
Parking not sourced yet
Check the town or agency pages before you go.
What's here
Not here
No drinking water
Not documented for the Chelmsford portion specifically.
Common questions
Not within the Chelmsford parcel itself; the park's campground and dairy-farm attractions are on the Carlisle side, reached from the main Lowell Street entrance.
Do I have to pay to park if I enter from Chelmsford?
The informal Elm Street and Janet Road trail entrances in Chelmsford let you reach the trail system without passing the fee booth used at the main Carlisle entrance.
Is there an entry fee at Great Brook Farm State Park?
Not confirmed; check the town's page before you go.
Can I bring my dog to Great Brook Farm State Park?
Dogs are welcome on leash on park trails.
Is Great Brook Farm State Park wheelchair accessible?
Not documented for the Chelmsford parcel; the main Carlisle entrance and Hart Barn area have separate accessibility info through DCR.