The average train between Penarth and Portsmouth takes 3h 51m and the fastest train takes 3h 40m. There is a train service every few hours from Penarth to Portsmouth. 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 Portsmouth. The earliest departure is at 6:05 AM in the morning, and the last departure from Penarth is at 8:05 PM which arrives into Portsmouth at 11:48 PM. All services require a transfer, and take on average 3h 51m. The schedules shown below are for the next available departures.

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Want to know about travelling from Penarth to Portsmouth? 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 Portsmouth. However, there are services departing from Penarth station and arriving at Portsmouth station via Portsmouth & Southsea. The journey, including transfers, takes approximately 3h 51m.
Penarth to Portsmouth train services, operated by Transport for Wales, depart from Cardiff Central station.
Penarth to Portsmouth train services, operated by Transport for Wales, arrive at Portsmouth & Southsea station.
Book your Penarth to Portsmouth train tickets online with Transport for Wales and Great Western Railway (GWR).
The distance between Penarth and Portsmouth is 161.8 km. The road distance is 230 km.
Great Western Railway (GWR) operates a train from Cardiff Central to Portsmouth & Southsea hourly. Tickets cost £60–120 and the journey takes 3h 18m.