The average train between Groton and Danbury takes 3h 51m and the fastest train takes 2h 51m. The train service runs several times per day from Groton to Danbury. 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 3 hours between Groton and Danbury. The earliest departure is at 6:25 AM in the morning, and the last departure from Groton is at 11:45 PM which arrives into Danbury at 8:40 AM. All services require a transfer at New Haven and take an average of 3h 51m. The schedules shown below are for the next available departures.


3h 48m • 2 changes


2h 54m • 2 changes


3h 55m • 2 changes


3h 58m • 2 changes


3h 40m • 2 changes


3h 52m • 2 changes


3h 11m • 2 changes


3h 56m • 2 changes


3h 40m • 2 changes


3h 52m • 2 changes


3h 11m • 2 changes


3h 56m • 2 changes


3h 40m • 2 changes


3h 52m • 2 changes


3h 11m • 2 changes


3h 56m • 2 changes


3h 40m • 2 changes


3h 52m • 2 changes


3h 11m • 2 changes


3h 56m • 2 changes
Want to know about travelling from Groton to Danbury? 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 Groton to Danbury. However, there are services departing from Groton station and arriving at Danbury station via New Haven. The journey, including transfers, takes approximately 3h 51m.
Groton to Danbury train services, operated by Amtrak, depart from New London station.
Groton to Danbury train services, operated by Amtrak, arrive at Danbury station.
The distance between Groton and Danbury is 115.1 km. The road distance is 169 km.
You can take a train from New London to Danbury via New Haven and South Norwalk in around 4h 14m.