The average train between Ronkonkoma and Harrison takes 2h 26m and the fastest train takes 2h 14m. The train service runs several times per day from Ronkonkoma to Harrison. 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 Ronkonkoma and Harrison. The earliest departure is at 4:50 AM at night, and the last departure from Ronkonkoma is at 6:55 PM which arrives into Harrison at 9:21 PM. All services require a transfer, and take on average 2h 26m. The schedules shown below are for the next available departures.

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2h 26m • 1 change

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Want to know about travelling from Ronkonkoma to Harrison? 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 Ronkonkoma to Harrison. However, there are services departing from Ronkonkoma station and arriving at Harrison station via Grand Central Terminal. The journey, including transfers, takes approximately 2h 26m.
Ronkonkoma to Harrison train services, operated by Long Island Rail Road, depart from Ronkonkoma station.
Ronkonkoma to Harrison train services, operated by Long Island Rail Road, arrive at Harrison station.
The distance between Ronkonkoma and Harrison is 53.3 km. The road distance is 116 km.
You can take a train from Ronkonkoma to Harrison via Grand Central Terminal in around 2h 6m.