The M3 is a motorway that runs from Sunbury-on-Thames, Surrey, to Southampton, Hampshire, a distance of approximately 59 miles (95 km). Its section from Southampton to the A34 trunk road junction (also for north Winchester) is in the north-south European route E05 (which is unsigned). The motorway is dual three-lane, except from Junction 8 (A303 road) near Basingstoke to Junction 9 near Winchester where it is dual two-lane.