The average train between Castle Cary and Southampton takes 2h 5m and the fastest train takes 1h 23m. There is a train service every few hours from Castle Cary to Southampton. 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 Castle Cary and Southampton. The earliest departure is at 7:26 AM in the morning, and the last departure from Castle Cary is at 11:53 PM which arrives into Southampton at 6:47 AM. All services require a transfer, and take on average 2h 5m. The schedules shown below are for the next available departures.

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1h 35m • 1 changeWant to know about travelling from Castle Cary to Southampton? 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 Castle Cary to Southampton. However, there are services departing from Castle Cary station and arriving at Southampton station via Westbury (Wilts). The journey, including transfers, takes approximately 2h 5m.
Castle Cary to Southampton train services, operated by Great Western Railway (GWR), depart from Castle Cary station.
Castle Cary to Southampton train services, operated by Great Western Railway (GWR), arrive at Southampton Central station.
Book your Castle Cary to Southampton train tickets online with Great Western Railway (GWR) and South Western Railway.
The distance between Castle Cary and Southampton is 80.4 km. The road distance is 110 km.
You can take a train from Castle Cary to Southampton Central via Westbury (Wilts) in around 2h 1m.