The average train between Penarth and Southampton takes 3h 7m and the fastest train takes 2h 57m. There is a train service every few hours from Penarth 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 Penarth and Southampton. The earliest departure is at 6:05 AM in the morning, and the last departure from Penarth is at 11:30 PM which arrives into Southampton at 12:03 PM. All services require a transfer, and take on average 3h 7m. The schedules shown below are for the next available departures.

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2h 59m • 1 change
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3h 30m • 1 change
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2h 57m • 1 change
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2h 57m • 1 changeWant to know about travelling from Penarth 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 Penarth to Southampton. However, there are services departing from Cardiff Central station and arriving at Southampton Central station via Southampton Central station. The journey, including transfers, takes approximately 3h 7m.
Penarth to Southampton train services, operated by Great Western Railway (GWR), depart from Cardiff Central station.
Penarth to Southampton train services, operated by Great Western Railway (GWR), arrive at Southampton Central station.
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The distance between Penarth and Southampton is 136.9 km. The road distance is 185 km.
Great Western Railway (GWR) operates a train from Cardiff Central to Southampton Central hourly. Tickets cost £45–90 and the journey takes 2h 32m.