The average train between Weymouth and Groton takes 3h 50m and the fastest train takes 2h 11m. The train service runs several times per day from Weymouth to Groton. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Trains run every 4 hours between Weymouth and Groton. The earliest departure is at 6:17 AM in the morning, and the last departure from Weymouth is at 10:56 PM which arrives into Groton at 8:11 AM. All services require a transfer at South Station and take an average of 3h 50m. The schedules shown below are for the next available departures.

2h 23m • 1 change

2h 51m • 1 change

4h 5m • 1 change

2h 54m • 1 change

2h 23m • 1 change

2h 51m • 1 change

4h 5m • 1 change

2h 54m • 1 change

2h 23m • 1 change

2h 51m • 1 change

4h 5m • 1 change

2h 54m • 1 change

2h 23m • 1 change

2h 51m • 1 change

4h 5m • 1 change

2h 54m • 1 change

3h 59m • 1 change

2h 11m • 1 change

3h 43m • 1 change

3h 18m • 1 change

3h 59m • 1 change

2h 11m • 1 change

2h 25m • 1 change

3h 18m • 1 change
Want to know about travelling from Weymouth to Groton? 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 train from Weymouth to Groton. However, there are services departing from Weymouth station and arriving at Groton station via South Station station. The journey, including transfers, takes approximately 3h 50m.
Weymouth to Groton train services, operated by MBTA, depart from East Weymouth station.
Weymouth to Groton train services, operated by MBTA, arrive at New London station.
The distance between Weymouth and Groton is 135.1 km. The road distance is 194 km.
You can take a train from East Weymouth to New London via South Station and Boston in around 3h 8m.