The average train between Cambridge and Carmarthen takes 5h 51m and the fastest train takes 5h 8m. There is a train service every few hours from Cambridge 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 Cambridge and Carmarthen. The earliest departure is at 6:12 AM in the morning, and the last departure from Cambridge is at 11:51 PM which arrives into Carmarthen at 10:31 AM. All services require a transfer at London Kings Cross and take an average of 5h 51m. The schedules shown below are for the next available departures.



5h 36m • 3 changes



5h 14m • 3 changes



5h 38m • 3 changes



5h 13m • 3 changes



6h 1m • 3 changes



5h 53m • 3 changes



6h 5m • 3 changes



5h 29m • 3 changes



5h 33m • 3 changes



5h 24m • 3 changes



5h 14m • 3 changes



5h 18m • 3 changes
Want to know about travelling from Cambridge 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 Cambridge to Carmarthen. However, there are services departing from Cambridge station and arriving at Carmarthen station via King's Cross. The journey, including transfers, takes approximately 5h 51m.
Cambridge to Carmarthen train services, operated by Great Northern, depart from Cambridge station.
Cambridge to Carmarthen train services, operated by Great Northern, arrive at Carmarthen station.
Book your Cambridge to Carmarthen train tickets online with Great Northern, London Underground (Tube) and 2 other operators.
The distance between Cambridge and Carmarthen is 304.9 km. The road distance is 450 km.
You can take a train from Cambridge to Carmarthen via London Kings Cross, King's Cross St. Pancras station, Paddington, London Paddington, and Swansea in around 5h 38m.