Nashua River Rail Trail Parking Garage, Ayer
Rt. 2 West, 4 miles beyond Rt. 495, take exit 38B for Rt. 110 East/111 North. Go 2 miles to rotary and follow Rt. 111 North/2A West toward Ayer. Stay on Rt. 111/2A turning right in downtown Ayer, then turn right on Groton St. just after NAPA auto parts store. Parking garage is immediately on the right, across from the bike path. Or take the Fitchburg commuter rail line to the Ayer station: schedule is here: https://mbta.com/schedules/CR-Fitchburg/timetable