40 miles 40 minutes
Park at Winnekenni Park parking lot:
N 42 47.441
W 71 04.125
Google map: Nature Walks in Northeastern MA
Roads (from Nashua NH):
- Route 3 south to Exit 81A in Massachusetts
- Route 495 north (22 miles) to Exit 111
- Route 110 southwest (1.2 miles)
- Castle Road south (200 feet)