Line 6 (Madrid Metro)

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Line 6
Line 6 train in Guzmán el Bueno station
Overview
Other name(s)	Línea 6 Circular
Native name	Línea 6
Owner	CRTM
Locale	Madrid
Stations	28
Website	www.metromadrid.es/en/linea/linea-6
Service
Type	Rapid transit
System	Madrid Metro
Operator(s)	CRTM
Rolling stock	CAF 8400 and CAF 5000
History
Opened	7 May 1981; 43 years ago (1981-05-07)
Technical
Line length	23.5 km (14.6 mi)
Character	Underground
Track gauge	1,445 mm (4 ft 8+7⁄8 in)
Route map v t e Line 6 Legend ↑ Lucero Laguna Carpetana Oporto Opañel Plaza Elíptica Usera Legazpi Arganzuela-Planetario Méndez Álvaro Pacífico Conde de Casal Sainz de Baranda O'Donnell Manuel Becerra Diego de León Avenida de América República Argentina Nuevos Ministerios Cuatro Caminos Guzmán el Bueno Vicente Aleixandre Ciudad Universitaria Moncloa Argüelles Príncipe Pío Puerta del Ángel Alto de Extremadura Lucero ↓ Laguna

Line 6 (Spanish: Línea 6 Circular) of the Madrid Metro opened originally between Cuatro Caminos and Pacifico in 1979. This is one of two circular lines in Madrid, but unlike Line 12, it did not open as a full circle. The circle was completed in 1995, taking four stages from its original opening. It has a length of 23.5 km (14.6 mi) and is coloured grey on route maps.^[1][2]

The line is made up of 28 stations with 115-metre platforms, linked by 23.472 km of wide gauge tunnel tracks. It allows one to transfer twice to all the lines of the network (three times in the case of lines 3 and 4) with the exception of lines 8 and 11, which start from the circular route and do not enter it, and the peripheral lines. (such as line 12 and the Light Metro lines).

Being built to allow transfers with many other lines and to cover the entire central area of the city, plagued by unevenness, it is one of the first lines, along with line 5, that was built at great depth, so that it would not suffer major damage from unevenness in its route. Thus, for example, the greatest depth of the Madrid Metro system is reached at the Cuatro Caminos station (a depth of 45 meters below ground) given that the tunnel is at the same altitude above sea level as, for example, in Príncipe Pío, its most superficial point (where it still remains two stories below the ground). This means that although the line is of very high utility in the system, sometimes some of the transfers are longer than the average in the network.

Along its route are some of the large interchanges built in recent years: Moncloa, Príncipe Pío, Plaza Elíptica and Avenida de América, in addition to the correspondence with Cercanías Renfe in Nuevos Ministerios, Laguna and Méndez Álvaro (which also coincides with the South Bus Station of Madrid).