Is there a direct train?

No, you must change at Swansea or Cardiff.

How long is the drive?

It takes about 5.5 hours depending on traffic.

Yes, but it is much slower than the train.

Yes, but exercise standard city safety precautions.

Tenby

Portsmouth

Train Driving

Tenby to Portsmouth

Updated: 29 May 2026

The journey from Tenby to Portsmouth covers approximately 380 km. By train, you will typically travel via Swansea or Cardiff, connecting to services heading toward Portsmouth Harbour. Driving involves taking the A40, M4, and M27 motorways. The drive takes roughly 5.5 hours, while the train journey can take up to 7 hours due to connections. This route connects the Welsh coast with the historic naval city of Portsmouth. It is a long but rewarding journey through diverse landscapes.

Total Distance: 380 km driving, 300 km air distance.

Fastest Way

Driving is the fastest option, taking about 5.5 hours.

Cheapest Way

Booking train tickets in advance is often the cheapest option.

Compare Tenby to Portsmouth Routes

	Train Connecting	Driving Direct
Duration	7 hours	5 hours 30 mins
Avg Price	80-140 GBP	60-85 GBP fuel
Operator	Transport for Wales / GWR	N/A
Route	Tenby to Swansea, then to Portsmouth Harbour.	A40, M4, M27.
Tip	Check for direct connections from Cardiff to Portsmouth.	The M4 and M27 can be very busy; check traffic before leaving.

Travel Tips

Train Booking
Use the Trainline app to find the cheapest split-ticket options.
M4/M27 Traffic
Avoid the M4 and M27 during Friday afternoon peak hours.
Station Access
Portsmouth Harbour is very busy; follow signs for the correct exit.
Local Transport
Portsmouth is a walkable city; explore on foot.
Parking
Book parking in advance if driving to the city center.