The average train between Swansea and Dorchester takes 5h 53m and the fastest train takes 4h 13m. The train service runs several times per day from Swansea to Dorchester. 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 Swansea and Dorchester. The earliest departure is at 6:28 AM in the morning, and the last departure from Swansea is at 7:53 PM which arrives into Dorchester at 10:09 AM. All services require a transfer, and take on average 5h 53m. The schedules shown below are for the next available departures.

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4h 13m • 1 change

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Want to know about travelling from Swansea to Dorchester? 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 Swansea to Dorchester. However, there are services departing from Swansea station and arriving at Dorchester station via Bristol Temple Meads. The journey, including transfers, takes approximately 5h 53m.
Swansea to Dorchester train services, operated by Transport for Wales, depart from Swansea station.
Swansea to Dorchester train services, operated by Transport for Wales, arrive at Dorchester West station.
Book your Swansea to Dorchester train tickets online with Transport for Wales and Great Western Railway (GWR).
The distance between Swansea and Dorchester is 145.6 km. The road distance is 262 km.
You can take a train from Swansea to Dorchester West via Bristol Temple Meads in around 4h 55m.