Mystic station is an intercity train station on the Northeast Corridor, located off Roosevelt Avenue east of downtown Mystic, Connecticut. It is served by a limited number of trains on Amtrak's Northeast Regional service, with three to five daily trains in each direction. Amtrak's Acela also passes by this station, but does not stop. Mystic is one of only three stations on the Northeast Corridor to be served exclusively by Amtrak, with no commuter rail service.

New London Union Station is a railroad station on the Northeast Corridor located in downtown New London, Connecticut, United States. Union Station is a station stop for most Amtrak Northeast Regional trains and all CTrail Shore Line East commuter rail trains, making it the primary railroad station in southeastern Connecticut. It serves as the centerpiece of the Regional Intermodal Transit Center, with connections to local and intercity buses as well as ferries to Long Island and Fishers Island, New York, and Block Island, Rhode Island. The station has one side platform and one island platform serving the two-track Northeast Corridor; the latter platform also serves a siding track that connects to the New England Central Railroad mainline.