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Callahan State Park

Details unconfirmedPreserve · Marlborough, MA
Right now

A 958-acre DCR state park spanning Framingham, Marlborough, and Southborough, with about 7 miles of marked trails through open fields and ponds; popular with hikers, horseback riders, and mountain bikers, and the Marlborough lot off Broadmeadow Road is the quieter of its three entrances.

What to expect

Trails
About 7 miles of marked, mostly flat-to-rolling multi-use trails through fields, woods, and ponds; used for hiking, horseback riding, and mountain biking.…
Parking
Not confirmed · unconfirmed
Entry fee
Free
Dogs
Dogs must be leashed in parking lots, on roads, on the Earthen Dam, on Foxhunt Trail, and on any trail bordering private property; off-leash is allowed only in designated areas.
Hours
Not confirmed; DCR day-use parks are typically open sunrise to sunset.
Birdwatching
Allowed
Managed by
MA Department of Conservation and Recreation (DCR) Website

Getting in

Parking
Parking not sourced yet
Check the town or agency pages before you go.

What's here

On site

Info kiosk
Trail map kiosk at each of the three parking lots

Not here

No drinking water
No water fountains reported at the park

Common questions

How long and how hard are the trails?
There's about 7 miles of marked trail, mostly easy walking through fields and past ponds rather than rugged terrain.
Are the trails paved or natural surface?
Natural surface throughout; expect dirt and grass, not pavement.
Are dogs allowed off leash?
Only in designated areas; elsewhere, including the parking lots, roads, and the Earthen Dam, dogs must stay on leash.
Where do I park, and is it obvious from the road?
The Marlborough lot is off Broadmeadow Road; each lot has a trail map kiosk, but street signage hasn't been independently confirmed.
Is there an entry fee at Callahan State Park?
No, entry is free.
Can I bring my dog to Callahan State Park?
Dogs must be leashed in parking lots, on roads, on the Earthen Dam, on Foxhunt Trail, and on any trail bordering private property; off-leash is allowed only in designated areas.
What rules should I know at Callahan State Park?
Dogs must be leashed except in designated off-leash areas.

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BetaSome details here are unconfirmed (confirmed posted hours, restroom availability, accessibility detail). Details are sourced from public agency data and can change through the season. Confirm locally before you go. Updated 2026-08-14.