How long is the drive?

Approximately 5 hours and 15 minutes.

Is Portsmouth worth visiting?

Yes, especially for its rich naval history.

Gunwharf Quays has a large underground car park.

Summer months for outdoor activities.

Mablethorpe

Portsmouth

Train Driving

Mablethorpe to Portsmouth

Updated: 30 May 2026

The route from Mablethorpe to Portsmouth covers 325 km, taking you from the Lincolnshire coast to the south coast of England. By car, you will follow the A16, A1, and M25, eventually taking the A3(M) into Portsmouth. Train travel involves a journey to London and a transfer to Portsmouth Harbour station. The drive typically takes 5 hours. This route is ideal for those visiting the historic naval dockyards.

Total Distance: 325 km driving distance; 275 km straight-line air distance.

Fastest Way

Driving is generally faster than the train due to the London transfer time.

Cheapest Way

Driving is the most economical choice for solo travelers and groups.

Compare Mablethorpe to Portsmouth Routes

	Train Connecting	Driving Direct
Duration	6 hours	5 hours 15 mins
Avg Price	90-160 GBP	60-80 GBP
Operator	LNER and South Western Railway	N/A
Route	Mablethorpe to Newark, Newark to London, London to Portsmouth	A16, A1, M25, A3
Tip	Portsmouth Harbour station is right next to the ferry terminals.	The A3(M) is a fast road but watch for speed cameras.

Travel Tips

Train Transfers
Use the London Underground Victoria line to get from King's Cross to Waterloo.
Parking
Use the Park and Ride at Tipner for cheaper access to the city center.
Dockyard Tickets
Book your Historic Dockyard tickets online to save on entry fees.
Traffic
Avoid the A3(M) during peak morning and evening hours.
Luggage
If taking the train, use the luggage storage at Portsmouth Harbour station.

Safety Tips

Road Safety
The A16 can be dark at night; use high beams where appropriate.
City Safety
Portsmouth is generally safe, but keep your belongings secure in crowded areas.
Vehicle Check
Check your oil and coolant before starting this long drive.
Emergency
Keep a power bank for your phone in case of a breakdown.