The average train between Merthyr Tydfil and Slough takes 3h 28m and the fastest train takes 2h 57m. There is a train service every few hours from Merthyr Tydfil to Slough. 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 Merthyr Tydfil and Slough. The earliest departure is at 6:39 AM in the morning, and the last departure from Merthyr Tydfil is at 10:37 PM which arrives into Slough at 7:15 AM. All services require a transfer at Cardiff Central and take an average of 3h 28m. The schedules shown below are for the next available departures.


3h 13m • 2 changes


3h 13m • 2 changes


3h 12m • 2 changes
Arrives next day


8h 38m • 2 changes


3h 11m • 2 changes


3h 12m • 2 changes


3h 12m • 2 changes


3h 12m • 2 changes


3h 11m • 2 changes


3h 12m • 2 changes


3h 12m • 2 changes


3h 12m • 2 changes
Want to know about travelling from Merthyr Tydfil to Slough? 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 Slough. However, there are services departing from Merthyr Tydfil station and arriving at Slough station via Cardiff Central. The journey, including transfers, takes approximately 3h 28m.
Merthyr Tydfil to Slough train services, operated by Transport for Wales, depart from Merthyr Tydfil station.
Merthyr Tydfil to Slough train services, operated by Transport for Wales, arrive at Reading station.
Book your Merthyr Tydfil to Slough train tickets online with Transport for Wales, Great Western Railway (GWR) and Elizabeth Line (TfL).
The distance between Merthyr Tydfil and Slough is 193.9 km. The road distance is 241 km.
You can take a train from Merthyr Tydfil to Slough via Cardiff Central and Reading in around 3h 20m.