The average train between Gaithersburg and Princeton takes 4h 28m and the fastest train takes 3h 42m. There is a train service every few hours from Gaithersburg to Princeton. 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 hourly between Gaithersburg and Princeton. The earliest departure is at 5:48 AM in the morning, and the last departure from Gaithersburg is at 11:31 PM which arrives into Princeton at 8:08 AM. All services require a transfer at Union Station, Red Line Center Platform and take an average of 4h 28m. The schedules shown below are for the next available departures.



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3h 59m • 3 changesWant to know about travelling from Gaithersburg to Princeton? 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 Gaithersburg to Princeton. However, there are services departing from Gaithersburg station and arriving at Princeton station via Trenton. The journey, including transfers, takes approximately 4h 28m.
Gaithersburg to Princeton train services, operated by Washington Metropolitan Area Transit Authority, depart from Washington Union Station.
Gaithersburg to Princeton train services, operated by Washington Metropolitan Area Transit Authority, arrive at Trenton station.
The distance between Gaithersburg and Princeton is 255.3 km. The road distance is 316 km.
Amtrak operates a train from Washington Union Station to Trenton hourly. Tickets cost $45–120 and the journey takes 2h 17m.