The average train between Slough and Castle Cary takes 1h 45m and the fastest train takes 1h 21m. There is a train service every few hours from Slough to Castle Cary. 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 Castle Cary. The earliest departure is at 6:53 AM in the morning, and the last departure from Slough is at 8:52 PM which arrives into Castle Cary at 10:40 PM. All services require a transfer, and take on average 1h 45m. The schedules shown below are for the next available departures.

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1h 51m • 1 changeWant to know about travelling from Slough to Castle Cary? 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 Castle Cary. However, there are services departing from Slough station and arriving at Castle Cary station via Reading. The journey, including transfers, takes approximately 1h 45m.
Slough to Castle Cary train services, operated by Great Western Railway (GWR), depart from Slough station.
Slough to Castle Cary train services, operated by Great Western Railway (GWR), arrive at Castle Cary station.
Book your Slough to Castle Cary train tickets online with Great Western Railway (GWR) and Elizabeth Line (TfL).
The distance between Slough and Castle Cary is 141.4 km. The road distance is 178 km.
You can take a train from Slough to Castle Cary via Reading in around 2h 42m.