The average train between London Bridge (Station) and Carmarthen takes 4h 19m and the fastest train takes 3h 55m. There is a train service every few hours from London Bridge (Station) to Carmarthen. 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 London Bridge (Station) and Carmarthen. The earliest departure is at 6:25 AM in the morning, and the last departure from London Bridge (Station) is at 10:26 PM which arrives into Carmarthen at 6:47 AM. All services require a transfer at Bond Street station and take an average of 4h 19m. The schedules shown below are for the next available departures.



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Want to know about travelling from London Bridge (Station) to Carmarthen? 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 London Bridge (Station) to Carmarthen. However, there are services departing from London Bridge (Station) station and arriving at Carmarthen station via Swansea. The journey, including transfers, takes approximately 4h 19m.
London Bridge (Station) to Carmarthen train services, operated by London Underground (Tube), depart from London Paddington station.
London Bridge (Station) to Carmarthen train services, operated by London Underground (Tube), arrive at Carmarthen station.
Book your London Bridge (Station) to Carmarthen train tickets online with London Underground (Tube), Elizabeth Line (TfL) and 2 other operators.
The distance between London Bridge (Station) and Carmarthen is 293.3 km. The road distance is 364 km.
You can take a subway from London Bridge Station to Carmarthen via Bond Street station, Bond Street Station, London Paddington, and Swansea in around 4h 52m.