How long does it take to get to Southampton?

By train, it takes about 4.5 hours; by car, about 3.75 hours.

Is there a direct train?

No, you will need to change trains at least once.

What is the best way to travel?

Train is recommended for comfort, while driving is better for flexibility.

No, the route via the M3 is toll-free.

Can I take a bike on the train?

Yes, but you must reserve a space in advance.

Kidwelly

Southampton

Train Driving

Kidwelly to Southampton

Updated: 31 May 2026

The journey from Kidwelly to Southampton covers approximately 280 km. By train, you will typically travel via Swansea, Bristol, and then transfer to a service to Southampton. Driving involves taking the A48, M4, and M3. This route takes you through the heart of England into the coastal city of Southampton. Expect a total travel time of approximately 4 hours and 30 minutes by train. Southampton is famous for its maritime history and its role as a major cruise port.

Total Distance: 280 km driving distance, 220 km straight-line air distance.

Fastest Way

Driving, which takes about 3 hours and 45 minutes under normal conditions.

Cheapest Way

Train using an Advance ticket booked at least 6 weeks ahead.

Compare Kidwelly to Southampton Routes

	Train Connecting	Driving Direct
Duration	4 hours 30 mins	3 hours 45 mins
Avg Price	£55 - £130	£35 - £55 in fuel
Operator	Transport for Wales / GWR / South Western Railway	Personal Vehicle
Route	Kidwelly to Southampton via Swansea, Bristol, and Salisbury.	A48, M4, and M3.
Tip	Book your tickets in advance to save on the cost of the Bristol to Southampton leg.	The M3 can be busy; allow extra time during peak hours.

Travel Tips

Train Booking
Use the Trainline app to compare prices across different operators.
City Transport
Southampton city center is compact and easily walkable.
Parking
Use the city center car parks for easy access to shopping areas.
Food
Try the diverse food scene, particularly the seafood restaurants.
Connectivity
Most city center areas have free public Wi-Fi.

Safety Tips

Motorway Safety
Be cautious on the M3 during peak hours due to heavy traffic.
Personal Safety
Stay in well-lit areas when walking at night.
Emergency
Keep a power bank for your phone to ensure you have navigation access.
Vehicle Security
Always lock your car and remove valuables when parked.