The average train between Cambridge and Portsmouth Harbour takes 3h 21m and the fastest train takes 2h 48m. There is a train service every few hours from Cambridge to Portsmouth Harbour. 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 Cambridge and Portsmouth Harbour. The earliest departure is at 6:12 AM in the morning, and the last departure from Cambridge is at 11:51 PM which arrives into Portsmouth Harbour at 10:00 AM. All services require a transfer at London Kings Cross and take an average of 3h 21m. The schedules shown below are for the next available departures.


2h 48m • 2 changes


2h 49m • 2 changes


2h 52m • 2 changes


2h 49m • 2 changes


3h 33m • 2 changes


3h 37m • 2 changes


3h 18m • 2 changes


3h 18m • 2 changes


2h 56m • 2 changes


2h 54m • 2 changes


2h 56m • 2 changes


3h 6m • 2 changes
Want to know about travelling from Cambridge to Portsmouth Harbour? 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 Cambridge to Portsmouth Harbour. However, there are services departing from Cambridge station and arriving at Portsmouth Harbour station via King's Cross. The journey, including transfers, takes approximately 3h 21m.
Cambridge to Portsmouth Harbour train services, operated by Great Northern, depart from Cambridge station.
Cambridge to Portsmouth Harbour train services, operated by Great Northern, arrive at Portsmouth Harbour station.
Book your Cambridge to Portsmouth Harbour train tickets online with Great Northern, London Underground (Tube) and South Western Railway.
The distance between Cambridge and Portsmouth Harbour is 177.5 km. The road distance is 213 km.
You can take a train from Cambridge to Portsmouth Harbour via London Kings Cross, Euston station, Waterloo Station, London Waterloo, and Portsmouth Harbour in around 3h 2m.