is a major motorway
to the city of Leeds
in northern England, but also linking several important towns and cities along the way, including Milton Keynes
. It also links to the M6
motorways near Rugby, the M25
near Potter's Bar, the M69
at Leicester, the M62
The motorway was one of the first to be built in the United Kingdom. It is around 200 miles (300 km) long and was constructed in stages between the 1950s and 1970s.
It has been extended to the east of Leeds to meet the A1(M) near Wetherby, providing a more direct link to the north and Scotland.
There is also an M1 motorway in Northern Ireland. It runs from Belfast to Dungannon, bypassing Lisburn, Lurgan, Craigavon and Portadown on the way.
The M1 motorway
in the Republic of Ireland
consists of several short sections built as bypasses of sections of the N1 road
, running from Dublin