The average train between Oxford and Carmarthen takes 4h 11m and the fastest train takes 3h 40m. There is a train service every few hours from Oxford 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 Oxford and Carmarthen. The earliest departure is at 6:31 AM in the morning, and the last departure from Oxford is at 10:23 PM which arrives into Carmarthen at 6:47 AM. All services require a transfer at Reading and take an average of 4h 11m. The schedules shown below are for the next available departures.


4h 14m • 2 changes


3h 46m • 2 changes
Arrives next day


4h 28m • 2 changes


4h 39m • 2 changes


4h 14m • 2 changes


4h 27m • 2 changes


3h 52m • 2 changes


4h • 2 changes


4h 15m • 2 changes


3h 55m • 2 changes


3h 43m • 2 changes


4h • 2 changes


4h 15m • 2 changes


3h 55m • 2 changes


3h 43m • 2 changes
Want to know about travelling from Oxford 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 Oxford to Carmarthen. However, there are services departing from Oxford station and arriving at Carmarthen station via Reading. The journey, including transfers, takes approximately 4h 11m.
Oxford to Carmarthen train services, operated by Cross Country, depart from Oxford station.
Oxford to Carmarthen train services, operated by Cross Country, arrive at Carmarthen station.
Book your Oxford to Carmarthen train tickets online with Cross Country, Great Western Railway (GWR) and Transport for Wales.
The distance between Oxford and Carmarthen is 210 km. The road distance is 343 km.
You can take a train from Oxford to Carmarthen via Reading and Swansea in around 4h 24m.