The average train between Harlow and Carmarthen takes 5h 5m and the fastest train takes 4h 40m. There is a train service every few hours from Harlow 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 Harlow and Carmarthen. The earliest departure is at 5:31 AM in the morning, and the last departure from Harlow is at 9:38 PM which arrives into Carmarthen at 6:46 AM. All services require a transfer at London Liverpool Street and take an average of 5h 5m. The schedules shown below are for the next available departures.



4h 59m • 3 changes



5h 2m • 3 changes



4h 53m • 3 changes



4h 43m • 3 changes



4h 40m • 3 changes



5h 10m • 3 changes



4h 48m • 3 changes



5h 9m • 3 changes



5h 2m • 3 changes



4h 47m • 3 changes



5h 19m • 3 changes



4h 43m • 3 changes
Want to know about travelling from Harlow 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 Harlow to Carmarthen. However, there are services departing from Harlow station and arriving at Carmarthen station via Swansea. The journey, including transfers, takes approximately 5h 5m.
Harlow to Carmarthen train services, operated by Greater Anglia, depart from London Paddington station.
Harlow to Carmarthen train services, operated by Greater Anglia, arrive at Carmarthen station.
Book your Harlow to Carmarthen train tickets online with Greater Anglia, London Underground (Tube) and 3 other operators.
The distance between Harlow and Carmarthen is 303.7 km. The road distance is 400 km.
You can take a train from Harlow Town to Carmarthen via London Liverpool Street, Liverpool Street station, Paddington, London Paddington, and Swansea in around 5h 25m.