The average train between Merthyr Tydfil and Llangennech takes 4h 33m and the fastest train takes 2h 39m. The train service runs several times per day from Merthyr Tydfil to Llangennech. 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 4 times a day between Merthyr Tydfil and Llangennech. The earliest departure is at 8:09 AM in the morning, and the last departure from Merthyr Tydfil is at 10:39 PM which arrives into Llangennech at 11:36 AM. All services require a transfer at Cardiff Central and take an average of 4h 33m. The schedules shown below are for the next available departures.


3h 2m • 2 changes


3h 11m • 2 changes


2h 39m • 2 changes
Arrives next day


7h 7m • 2 changes


3h 2m • 2 changes


3h 11m • 2 changes


2h 39m • 2 changes
Arrives next day


7h 7m • 2 changes


3h 2m • 2 changes


3h 11m • 2 changes


2h 39m • 2 changes
Arrives next day


6h 44m • 2 changes


3h 5m • 2 changes


3h 12m • 2 changes


2h 39m • 2 changes
Arrives next day


11h 44m • 2 changes
Want to know about travelling from Merthyr Tydfil to Llangennech? 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 Merthyr Tydfil to Llangennech. However, there are services departing from Merthyr Tydfil station and arriving at Llangennech station via Cardiff Central. The journey, including transfers, takes approximately 4h 33m.
Merthyr Tydfil to Llangennech train services, operated by Transport for Wales, depart from Merthyr Tydfil station.
Merthyr Tydfil to Llangennech train services, operated by Transport for Wales, arrive at Llangennech station.
Book your Merthyr Tydfil to Llangennech train tickets online with Transport for Wales and Great Western Railway (GWR).
The distance between Merthyr Tydfil and Llangennech is 49.1 km. The road distance is 137 km.
You can take a train from Merthyr Tydfil to Llangennech via Cardiff Central and Swansea in around 3h 40m.