Line 7 (Madrid Metro)

Line 7 of the Madrid Metro is a rapid transit line that originally opened on 17 July 1974. It runs between and.

History
The line has been extended multiple times. It initially ran between and. On 17 May 1975, the line was extended from Pueblo Nuevo to, and was not extended for many years. This was a problem as line 7 was very underused. The problem was solved in 1998 and 1999 when an extension to was opened in four stages. The first stage was between Avenida de América and, opening on 1 April 1998, followed by Gregorio Marañón to. The next section to open extended the line to, and a final section further reached. Pitis, however, was the only station on the Madrid metro to have restricted opening times. At the time, Pitis was a very small village, and the station's main purpose is to provide interchange for Renfe services. Between 1999 and 2018, most trains ran between and, with  being served by only a few trains each hour.

Beginning in 2019, all trains are expected to terminate at Pitis following the opening of station, which was previously constructed, but not opened due to the ongoing construction of the surrounding developments. Arroyofresno station was finally opened on 23 March 2019.

On 4 May 2007, Line 7 was extended from Las Musas to the towns of Coslada and San Fernando. At, next to Atlético Madrid's Metropolitano Stadium, passengers have to change trains for Metro-Este to Coslada and San Fernando - the so-called Line 7B.

Rolling stock
Line 7A, the primary portion of the line from Pitis to Estadio Metropolitano, uses 6-car trains of class 9000. Line 7B, the extension to Hospital del Henares, uses 3-car trains of class 9000.