The average train between Slough and South Wales takes 3h 34m and the fastest train takes 2h 54m. There is a train service every few hours from Slough to South Wales. 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 Slough and South Wales. The earliest departure is at 5:22 AM in the morning, and the last departure from Slough is at 10:54 PM which arrives into South Wales at 7:09 AM. All services require a transfer at Reading and take an average of 3h 34m. The schedules shown below are for the next available departures.


2h 58m • 2 changes


3h 21m • 2 changes
Arrives next day


8h 15m • 2 changes


3h 47m • 2 changes


3h 8m • 2 changes


3h 8m • 2 changes


3h 6m • 2 changes


3h 47m • 2 changes


3h 8m • 2 changes


3h 8m • 2 changes


3h 6m • 2 changes
Want to know about travelling from Slough to South Wales? 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 Slough to South Wales. However, there are services departing from Slough station and arriving at South Wales station via Cardiff Central. The journey, including transfers, takes approximately 3h 34m.
Slough to South Wales train services, operated by Elizabeth Line (TfL), depart from Reading station.
Slough to South Wales train services, operated by Elizabeth Line (TfL), arrive at Cwmbach station.
Book your Slough to South Wales train tickets online with Elizabeth Line (TfL), Great Western Railway (GWR) and Transport for Wales.
The distance between Slough and South Wales is 194.8 km. The road distance is 237 km.
You can take a train from Slough to Cwmbach via Reading and Cardiff Central in around 3h 32m.