| First train | 03:52 | |
|---|---|---|
| Last train | 20:09 | |
| Departure station | Portsmouth Harbour | |
| Arrival station | Cathays | |
| Journey time | From 3h 42m | |
| Distance | 102 miles (164 km) | |
| Frequency | 16 trains per day | |
| Changes | 1 change | |
| Train operators | CrossCountry, Great Western Railway, South Western Railway, Transport for Wales |
Considering a trip to Cathays and need more information on how to take the train from Portsmouth Harbour to Cathays? Start your search with us today!
Usually, the train from Portsmouth Harbour to Cathays takes around 5 hours 7 minutes. Every day, there are around 16 trains running on this popular route.
There will be 1 change on your journey from Portsmouth Harbour to Cathays, as there are no direct trains.
Trains on this route are operated by Great Western Railway, Transport for Wales, South Western Railway and CrossCountry.
Booking tickets in advance can be cheaper than buying on the day of travel.
Use our Journey Planner to pick the dates and times you want to travel, and we’ll give you all the options.
For more money-saving tips on UK and European train travel, read our cheap train tickets guide.