Distance from Portsmouth to Plymouth

The straight-line (great-circle) distance between Portsmouth and Plymouth is 221.4 kilometres, roughly 32 min by plane at 850 km/h. By road it is about 274 km via A35 and Devon Expressway, which takes around 3 h 30 min of driving without stops. The map below shows both routes, and the calculator recomputes them for any other pair of places.

Straight line221.4 km
By road274 km
Driving time3 h 30 min
Flight time32 min

About this page

This page is for anyone planning a trip from Portsmouth to Plymouth, in the United Kingdom. The straight-line distance comes from the haversine formula (great-circle distance). The road distance and driving time are the fastest car route on the OpenStreetMap road network, computed with OSRM; the actual time depends on traffic, stops and the roads you choose. Tap "Calculate distance" in the calculator to redraw the route live.

Frequently asked questions

What is the distance from Portsmouth to Plymouth?
In a straight line it is 221.4 km. By road it is about 274 km, roughly 3 h 30 min of driving.
How long is the flight from Portsmouth to Plymouth?
Roughly 32 min: the distance at a cruising speed of 850 km/h plus about 17 minutes for take-off and landing.
How many kilometres by road between Portsmouth and Plymouth?
About 274 km on the fastest route via A35 and Devon Expressway, which takes around 3 h 30 min by car. Tap "Calculate distance" in the calculator to see the route on the map.
How is this distance calculated?
The straight-line distance uses the haversine formula, which gives the shortest path between two points on the Earth's surface.