The A74(M) and M74 motorways are two major motorways in Scotland, running continuously from the southern outskirts of Glasgow to the Anglo-Scottish border at Gretna. In conjunction with the M6 motorway, it forms one of the two major cross-border routes between Scotland and England. It is part of the unsigned international E-road network E05. Although the entire route is usually referred to as the M74, more than half of its length is officially designated as the A74(M); see Numbering confusion below.