The average train between Carmarthen and Sudbury takes 6h 31m and the fastest train takes 5h 29m. There is a train service every few hours from Carmarthen to Sudbury. 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 Carmarthen and Sudbury. The earliest departure is at 4:37 AM at night, and the last departure from Carmarthen is at 10:39 PM which arrives into Sudbury at 1:36 PM. All services require a transfer at London Paddington and take an average of 6h 31m. The schedules shown below are for the next available departures.




5h 57m • 4 changes




5h 51m • 4 changes




5h 51m • 4 changes




5h 51m • 4 changes




6h 45m • 4 changes




6h 14m • 4 changes




6h 11m • 4 changes




6h 37m • 4 changes




5h 44m • 4 changes




5h 49m • 4 changes




5h 29m • 4 changes




5h 58m • 4 changes




5h 44m • 4 changes




5h 49m • 4 changes




5h 29m • 4 changes




5h 58m • 4 changes
Want to know about travelling from Carmarthen to Sudbury? 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 Carmarthen to Sudbury. However, there are services departing from Carmarthen station and arriving at Sudbury station via London Paddington. The journey, including transfers, takes approximately 6h 31m.
Carmarthen to Sudbury train services, operated by Great Western Railway (GWR), depart from Carmarthen station.
Carmarthen to Sudbury train services, operated by Great Western Railway (GWR), arrive at Colchester station.
Book your Carmarthen to Sudbury train tickets online with Great Western Railway (GWR), Elizabeth Line (TfL) and 2 other operators.
The distance between Carmarthen and Sudbury is 345.7 km. The road distance is 469 km.
You can take a train from Carmarthen to Bus Station via London Paddington, Stratford (London), Colchester, and The Bricklayers Arms in around 5h 59m.