The average train between Maidenhead and Carmarthen takes 4h 9m and the fastest train takes 3h 44m. There is a train service every few hours from Maidenhead 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 Maidenhead and Carmarthen. The earliest departure is at 6:45 AM in the morning, and the last departure from Maidenhead is at 11:00 PM which arrives into Carmarthen at 6:47 AM. All services require a transfer at Reading and take an average of 4h 9m. The schedules shown below are for the next available departures.


3h 49m • 2 changes

4h 5m • 2 changes

3h 49m • 2 changesArrives next day


4h 6m • 2 changes

3h 45m • 2 changes

4h 4m • 2 changes

3h 54m • 2 changes

3h 53m • 2 changes

3h 45m • 2 changes

4h 4m • 2 changes

3h 54m • 2 changes

3h 53m • 2 changes

3h 45m • 2 changes

4h 4m • 2 changes

3h 54m • 2 changes

3h 53m • 2 changesWant to know about travelling from Maidenhead 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 Maidenhead to Carmarthen. However, there are services departing from Maidenhead station and arriving at Carmarthen station via Swansea. The journey, including transfers, takes approximately 4h 9m.
Maidenhead to Carmarthen train services, operated by Elizabeth Line (TfL), depart from Reading station.
Maidenhead to Carmarthen train services, operated by Elizabeth Line (TfL), arrive at Carmarthen station.
Book your Maidenhead to Carmarthen train tickets online with Elizabeth Line (TfL), Great Western Railway (GWR) and Transport for Wales.
The distance between Maidenhead and Carmarthen is 249.9 km. The road distance is 317 km.
You can take a train from Maidenhead to Carmarthen via Reading and Swansea in around 4h 16m.