# Line 12 (Madrid Metro)

Line 12, also known as MetroSur (Spanish for "MetroSouth"), is a line of the Madrid Metro inaugurated on 11 April 2003. Line 12 is a circular line; it is the only route of the Madrid Metro that is completely outside the city of Madrid (as well as fare zone A). The line connects five suburban towns southwest of the city, serving around one million people. The towns linked by Line 12 are Alcorcón, Leganés, Getafe, Fuenlabrada and Móstoles. Despite parts of the line running through uninhabited territory, there are no above-ground sections in an effort to facilitate future urban development.
At a total length of 40.6 km (25.2 mi), it is the longest line in the network and even more extensive than Lines 9 and 10 with their appendages to the north and south. Despite this, Line 12 accumulated only about 32 million trips in 2018, down from 34.8 million in the previous year, making it the only line to lose users in that time and the third least used after the yet-to-be-completed Line 11 and the airport connection Line 8. This decrease was mainly caused by renovation works necessitating the temporary closure of sections of the line.
The line only interchanges with the rest of the Madrid Metro at one station, with a connection to Line 10 at Puerta del Sur. There are plans to extend Line 3 to provide a further interchange station at El Casar.
MetroSur is one of the longest tunnels in the world. At the time of its opening it was the second longest fully underground subway in Europe. As of 2024 it remains the longest subway tunnel in the European Union.

## Rolling stock

Line 12 uses CAF's 8000 and AnsaldoBreda's 9000 series in MRM composition. Both series use a three-car train, as there is not enough demand for additional cars. Up to three extra coaches per train can be ordered.

## Future

There are plans to build two new stations: "Fuenlabrada Oeste" between Loranca and Hospital de Fuenlabrada, and secondly "Fuenlabrada Este" between Arroyo Culebro and Parque de los Estados. No completion dates for these new stations have been given, as they are still in the planning stage.

## Stations

Line 12 stations have elements of art, such as the murals in the Hospital Severo Ochoa Station honoring the Nobel Prize winning biochemist, Severo Ochoa. Surface level stations are covered by massive roofs, with some glass to allow daylight – a similar system is used in Copenhagen Metro and Prague Metro systems.
| Municipality | Station | Opened | Zone | Connections |
| Alcorcón | Puerta del Sur | 2003 | B1 | Madrid Metro: |
| Alcorcón | Parque Lisboa | 2003 | B1 | |
| Alcorcón | Alcorcón Central | 2003 | B1 | Cercanías Madrid: |
| Alcorcón | Parque Oeste | 2003 | B1 | |
| Móstoles | Universidad Rey Juan Carlos | 2003 | B2 | |
| Móstoles | Móstoles Central | 2003 | B2 | Cercanías Madrid: |
| Móstoles | Pradillo | 2003 | B2 | |
| Móstoles | Hospital de Móstoles | 2003 | B2 | |
| Móstoles | Manuela Malasaña | 2003 | B2 | |
| Fuenlabrada | Loranca | 2003 | B2 | |
| Fuenlabrada | Hospital de Fuenlabrada | 2003 | B2 | |
| Fuenlabrada | Parque Europa | 2003 | B2 | |
| Fuenlabrada | Fuenlabrada Central | 2003 | B2 | Cercanías Madrid: |
| Fuenlabrada | Parque de los Estados | 2003 | B2 | |
| Getafe | Arroyo Culebro | 2003 | B1 | |
| Getafe | Conservatorio | 2003 | B1 | |
| Getafe | Alonso de Mendoza | 2003 | B1 | |
| Getafe | Getafe Central | 2003 | B1 | Cercanías Madrid: |
| Getafe | Juan de la Cierva | 2003 | B1 | |
| Getafe | El Casar | 2003 | B1 | Cercanías Madrid: |
| Getafe | Los Espartales | 2003 | B1 | |
| Getafe | El Bercial | 2003 | B1 | |
| Leganés | El Carrascal | 2003 | B1 | |
| Leganés | Julián Besteiro | 2003 | B1 | |
| Leganés | Casa del Reloj | 2003 | B1 | |
| Leganés | Hospital Severo Ochoa | 2003 | B1 | |
| Leganés | Leganés Central | 2003 | B1 | Cercanías Madrid: |
| Leganés | San Nicasio | 2003 | B1 | |