M3 motorway (Great Britain)

The M3 is a motorway between Sunbury-on-Thames and Southampton in England. It links London with Southampton and Portsmouth, as well as South West England. It is about long.
Junctions.
!scope=col|miles
!scope=col|km
!scope=col abbr="Northeastbound"|North-east bound exits (B carriageway)
!scope=col|Junction
!scope=col abbr="Southwestbound"|South-west bound exits (A carriageway)