Autopista de Circunvalación M-30

The M-30 orbital motorway circles the central districts of Madrid, the capital city of Spain. It is the innermost ring road of the Spanish city, and the length is 32,5 km. Outer rings are named M-40, M-45 and M-50.

It has, at least, three lanes in each direction, supplemented in some parts by two or three lane auxiliary roads. It connects to the main Spanish radial national roads that start in Madrid.

The M30 is the busiest Spanish road, famous for its traffic jams, and surrounded by several landmarks such as Torrespaña, the national headquarters of IBM, and passes under the Vicente Calderón Stadium.