The average train between Swansea and Dumbarton takes 10h 14m and the fastest train takes 8h 10m. The train service runs several times per day from Swansea to Dumbarton. 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 Dumbarton. The earliest departure is at 5:39 AM in the morning, and the last departure from Swansea is at 5:55 PM which arrives into Dumbarton at 9:59 AM. All services require a transfer at Crewe and take an average of 10h 14m. The schedules shown below are for the next available departures.


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Want to know about travelling from Swansea to Dumbarton? 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 Dumbarton. However, there are services departing from Swansea station and arriving at Dumbarton station via Crewe. The journey, including transfers, takes approximately 10h 14m.
Swansea to Dumbarton train services, operated by Transport for Wales, depart from Swansea station.
Swansea to Dumbarton train services, operated by Transport for Wales, arrive at Glasgow Central station.
Book your Swansea to Dumbarton train tickets online with Transport for Wales, Avanti West Coast and ScotRail.
The distance between Swansea and Dumbarton is 482.5 km. The road distance is 708 km.
You can take a train from Swansea to Dumbarton Central via Crewe, Glasgow Central, and Glasgow Queen Street in around 8h 42m.