Along the Charles River Walkway Moody Street to Watertown Square (by foot and MBTA bus)
This walk is about 4 miles long. It starts (or ends) with a bus ride from Watertown Square to Moody Street in Waltham. Except for one detour, all of the route is on the Riverwalk.
Begin by taking the MBTA 70/70A bus from Watertown Square to Moody Street in Waltham. The bus runs frequently, but you may want to consult the schedule.
Alternately, you could park your car and start walking in Waltham, and take the bus back from Watertown Square at the end.
Refreshments and diversions of all kinds are available on Moody Street. Kids won't want to miss The Construction Site, right next to the bridge.
On the north side of the river, a new entrance to the Riverwalk is under construction. Enter this path, with the Charles on your right.
Proceed along the edge of the river to a footbridge.