The average bus between Charlestown and Watertown takes 50 min and the fastest bus takes 32 min. The bus runs at least 4 times per hour from Charlestown to Watertown. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Buses run every 15 minutes between Charlestown and Watertown. The earliest departure is at 8:04 AM in the morning, and the last departure from Charlestown is at 7:48 PM which arrives into Watertown at 8:36 PM. All services require a transfer at Harvard Sq @ Garden St - Dawes Island and take an average of 50 min. The schedules shown below are for the next available departures.

1h 1m • 1 change

1h 1m • 1 change

1h 2m • 1 change

1h 2m • 1 change
Want to know about travelling from Charlestown to Watertown? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.
No, there is no direct bus from Charlestown to Watertown. However, there are services departing from Charlestown station and arriving at Watertown station via Harvard Sq @ Garden St - Dawes Island. The journey, including transfers, takes approximately 50 min.
Charlestown to Watertown bus services, operated by MBTA, depart from Alford St @ MBTA Charlestown Garage station.
Charlestown to Watertown bus services, operated by MBTA, arrive at Mt Auburn St @ Marshall St station.
The distance between Charlestown and Watertown is 10 km. The road distance is 11 km.
You can take a bus from Alford St @ MBTA Charlestown Garage to Mt Auburn St @ Marshall St via Harvard Sq @ Garden St - Dawes Island and Harvard in around 48 min.