The average bus between Cardiff and Merthyr Mawr takes 2h 3m and the fastest bus takes 1h 14m. There is a bus service every few hours from Cardiff to Merthyr Mawr. 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 hourly between Cardiff and Merthyr Mawr. The earliest departure is at 7:25 AM in the morning, and the last departure from Cardiff is at 11:25 PM which arrives into Merthyr Mawr at 5:49 AM. All services require a transfer, and take on average 2h 3m. The schedules shown below are for the next available departures.

1h 20m • 1 change

2h 5m • 1 change

2h 5m • 1 change

1h 44m • 1 change

1h 22m • 1 change

1h 45m • 1 change

1h 40m • 1 change

1h 45m • 1 change

1h 22m • 1 change

1h 45m • 1 change

1h 40m • 1 change

1h 45m • 1 change

1h 22m • 1 change

1h 45m • 1 change

1h 40m • 1 change

1h 45m • 1 change
Want to know about travelling from Cardiff to Merthyr Mawr? 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 Cardiff to Merthyr Mawr. However, there are services departing from Cardiff station and arriving at Merthyr Mawr station via Bridgend Bus Station Stand 5 station. The journey, including transfers, takes approximately 2h 3m.
Cardiff to Merthyr Mawr bus services, operated by First South & West Wales, depart from Cardiff Bus Interchange Bay 2 station.
Cardiff to Merthyr Mawr bus services, operated by First South & West Wales, arrive at Bridgend Bus Station Stand 5.
The distance between Cardiff and Merthyr Mawr is 29.7 km. The road distance is 38 km.
First South & West Wales operates a bus from Cardiff Bus Interchange Bay 2 to Bridgend Bus Station Stand 5 every 15 minutes. Tickets cost £3 and the journey takes 1h 10m.