The average bus between Carmarthen and Merthyr Tydfil takes 3h 32m and the fastest bus takes 3h 7m. The bus service runs several times per day from Carmarthen to Merthyr Tydfil. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Buses run 5 times a day between Carmarthen and Merthyr Tydfil. The earliest departure is at 6:05 AM in the morning, and the last departure from Carmarthen is at 4:20 PM which arrives into Merthyr Tydfil at 8:47 PM. All services require a transfer at Llandovery Car Park and take an average of 3h 32m. The schedules shown below are for the next available departures.


3h 7m • 2 changes


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3h 7m • 2 changes


3h 27m • 2 changes


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3h 22m • 2 changes


3h 7m • 2 changes


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3h 22m • 2 changes


3h 22m • 2 changes


3h 7m • 2 changes


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3h 22m • 2 changes
Want to know about travelling from Carmarthen to Merthyr Tydfil? 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 bus from Carmarthen to Merthyr Tydfil. However, there are services departing from Carmarthen station and arriving at Merthyr Tydfil station via Llandovery Car Park. The journey, including transfers, takes approximately 3h 32m.
Carmarthen to Merthyr Tydfil bus services, operated by Morris Travel, depart from Carmarthen Bus Station Stand 8.
Carmarthen to Merthyr Tydfil bus services, operated by Morris Travel, arrive at RAFA Club station.
The distance between Carmarthen and Merthyr Tydfil is 64.9 km. The road distance is 120 km.
You can take a bus from Carmarthen Bus Station Stand 8 to RAFA Club via Llandovery Car Park and Brecon Interchange 1 in around 3h 58m.