The average train between Cardiff and Dumbarton takes 9h 11m and the fastest train takes 7h 9m. There is a train service every few hours 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 hourly between Cardiff and Dumbarton. The earliest departure is at 4:33 AM at night, and the last departure from Cardiff is at 10:23 PM which arrives into Dumbarton at 11:51 AM. All services require a transfer at Crewe and take an average of 9h 11m. The schedules shown below are for the next available departures.




7h 55m • 4 changes




8h 9m • 4 changes




8h 13m • 4 changes




8h 7m • 4 changes




7h 55m • 4 changes




8h 9m • 4 changes




8h 13m • 4 changes




8h 7m • 4 changes




7h 55m • 4 changes




8h 9m • 4 changes




8h 13m • 4 changes




8h 7m • 4 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 9h 11m.
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 2 other operators.
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, Wigan North Western, Glasgow Central, Glasgow Central Low Level, and Hyndland in around 7h 41m.