The average train between Grantham and Carmarthen takes 6h 12m and the fastest train takes 5h 11m. There is a train service every few hours from Grantham 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 Grantham and Carmarthen. The earliest departure is at 5:47 AM in the morning, and the last departure from Grantham is at 10:59 PM which arrives into Carmarthen at 10:25 AM. All services require a transfer at London Kings Cross and take an average of 6h 12m. The schedules shown below are for the next available departures.



5h 46m • 3 changes



5h 13m • 3 changes



5h 42m • 3 changes



5h 25m • 3 changes



5h 57m • 3 changes



5h 33m • 3 changes



5h 20m • 3 changes



5h 52m • 3 changes



5h 57m • 3 changes



5h 33m • 3 changes



5h 20m • 3 changes



5h 52m • 3 changes



6h • 3 changes



5h 23m • 3 changes



5h 39m • 3 changes



5h 49m • 3 changes
Want to know about travelling from Grantham 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 Grantham to Carmarthen. However, there are services departing from Grantham station and arriving at Carmarthen station via King's Cross. The journey, including transfers, takes approximately 6h 12m.
Grantham to Carmarthen train services, operated by London North Eastern Railway Limited (LNER), depart from Grantham station.
Grantham to Carmarthen train services, operated by London North Eastern Railway Limited (LNER), arrive at Carmarthen station.
Book your Grantham to Carmarthen train tickets online with London North Eastern Railway Limited (LNER), London Underground (Tube) and 3 other operators.
The distance between Grantham and Carmarthen is 274.9 km. The road distance is 529 km.
You can take a train from Grantham to Carmarthen via London Kings Cross, King's Cross St. Pancras station, Paddington, London Paddington, and Swansea in around 5h 57m.