The average train between Cardiff and Dumbarton takes 8h 3m and the fastest train takes 7h 5m. The train service runs several times per day from Cardiff 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 Cardiff and Dumbarton. The earliest departure is at 4:33 AM at night, and the last departure from Cardiff is at 10:22 PM which arrives into Dumbarton at 10:20 AM. All services require a transfer at Crewe and take an average of 8h 3m. The schedules shown below are for the next available departures.
Arrives next day



7h 20m • 3 changes
Arrives next day



11h 38m • 3 changes



7h 28m • 3 changes



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7h 28m • 3 changes



7h 12m • 3 changes



7h 5m • 3 changes



7h 6m • 3 changes



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7h 12m • 3 changes



7h 5m • 3 changes



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7h 16m • 3 changes



7h 16m • 3 changes



7h 6m • 3 changes



7h 6m • 3 changes



7h 18m • 3 changes



7h 15m • 3 changes



7h 39m • 3 changes



7h 42m • 3 changes



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7h 12m • 3 changes



7h 5m • 3 changes



7h 6m • 3 changes
Want to know about travelling from Cardiff 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 Cardiff to Dumbarton. However, there are services departing from Cardiff station and arriving at Dumbarton station via Crewe. The journey, including transfers, takes approximately 8h 3m.
Cardiff to Dumbarton train services, operated by Transport for Wales, depart from Cardiff Central station.
Cardiff to Dumbarton train services, operated by Transport for Wales, arrive at Glasgow Central station.
Book your Cardiff to Dumbarton train tickets online with Transport for Wales, Avanti West Coast and ScotRail.
The distance between Cardiff and Dumbarton is 504.7 km. The road distance is 634 km.
You can take a train from Cardiff Central to Dumbarton Central via Crewe, Glasgow Central, Glasgow Central Low Level, and Hyndland in around 7h 39m.