The average train between Milton Keynes and Carmarthen takes 5h and the fastest train takes 4h 28m. There is a train service every few hours from Milton Keynes 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 Milton Keynes and Carmarthen. The earliest departure is at 5:20 AM in the morning, and the last departure from Milton Keynes is at 9:58 PM which arrives into Carmarthen at 6:47 AM. All services require a transfer at London Euston and take an average of 5h. The schedules shown below are for the next available departures.



5h 10m • 3 changes



4h 56m • 3 changes



4h 45m • 3 changes



4h 36m • 3 changes



5h 10m • 3 changes



4h 56m • 3 changes



4h 45m • 3 changes



4h 36m • 3 changes



5h 10m • 3 changes



4h 56m • 3 changes



4h 45m • 3 changes



4h 36m • 3 changes
Want to know about travelling from Milton Keynes 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 Milton Keynes to Carmarthen. However, there are services departing from Milton Keynes station and arriving at Carmarthen station via London Euston. The journey, including transfers, takes approximately 5h.
Milton Keynes to Carmarthen train services, operated by Avanti West Coast, depart from Milton Keynes Central station.
Milton Keynes to Carmarthen train services, operated by Avanti West Coast, arrive at Carmarthen station.
Book your Milton Keynes to Carmarthen train tickets online with Avanti West Coast, London Underground (Tube) and 3 other operators.
The distance between Milton Keynes and Carmarthen is 244.1 km. The road distance is 441 km.
You can take a train from Milton Keynes Central to Carmarthen via London Euston, King's Cross St. Pancras station, Paddington, London Paddington, and Swansea in around 5h 29m.