The average train between Portsmouth Harbour and Chepstow takes 3h 31m and the fastest train takes 3h 11m. The train service runs several times per day from Portsmouth Harbour to Chepstow. 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 every 4 hours between Portsmouth Harbour and Chepstow. The earliest departure is at 6:01 AM in the morning, and the last departure from Portsmouth Harbour is at 8:24 PM which arrives into Chepstow at 12:23 AM. All services require a transfer at Severn Tunnel Junction and take an average of 3h 31m. The schedules shown below are for the next available departures.

3h 43m • 1 change

3h 24m • 1 change

3h 21m • 1 change

3h 20m • 1 change

3h 43m • 1 change

3h 24m • 1 change

3h 21m • 1 change

3h 20m • 1 change

3h 43m • 1 change

3h 24m • 1 change

3h 21m • 1 change

3h 20m • 1 change

3h 43m • 1 change

3h 24m • 1 change

3h 21m • 1 change

3h 20m • 1 change

3h 23m • 1 change

3h 21m • 1 change

3h 21m • 1 change

3h 11m • 1 change
Want to know about travelling from Portsmouth Harbour to Chepstow? 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 Portsmouth Harbour to Chepstow. However, there are services departing from Portsmouth Harbour station and arriving at Chepstow station via Severn Tunnel Junction. The journey, including transfers, takes approximately 3h 31m.
Portsmouth Harbour to Chepstow train services, operated by Great Western Railway (GWR), depart from Portsmouth Harbour station.
Portsmouth Harbour to Chepstow train services, operated by Great Western Railway (GWR), arrive at Severn Tunnel Junction station.
Book your Portsmouth Harbour to Chepstow train tickets online with Great Western Railway (GWR), Transport for Wales and Cross Country.
The distance between Portsmouth Harbour and Chepstow is 144 km. The road distance is 203 km.
Great Western Railway (GWR) operates a train from Portsmouth Harbour to Severn Tunnel Junction every 4 hours. Tickets cost £50–100 and the journey takes 2h 59m.