The C-1 is a rail service of Cercanías Madrid commuter rail network, operated by Renfe Operadora. It runs from Príncipe Pío station in western Madrid to Madrid Barajas Airport Terminal 4, through the city center of Madrid. The C-1 shares tracks for the majority of its length with services and (thus of which serving as a complementary line) while it also shares large parts with , and . The service has existed in its current form since 2011, when it opened.
Infrastructure Like the rest of Cercanías Madrid services, the C-1 runs on the Iberian gauge mainline railway system, which is owned by Adif, an agency of the Spanish government. All of the railway lines carrying Cercanias Madrid services are electrified at 3,000 volts (V) direct current (DC) using overhead lines. The C-1 operates on a total length of , which is entirely double-track. The trains on the line call at up to 11 stations, using the following railway lines, in order from north to south:
From To Railway line Route number Príncipe Pío (PK 0.1) (PK 7.4) Madrid-Príncipe Pío–Pinar 910 (PK 0.0) (PK 7.0) Risa Tunnel 900 (PK 0.0) (PK 2.8) Madrid–Barcelona 200 (PK 0.0) Aeropuerto T4 (PK 5.3) Madrid–Barajas Airport 908
List of stations The following table lists the name of each station served by C-1 in order from west to east; the station's service pattern offered by C-1 trains; the transfers to other Cercanías Madrid lines; remarkable transfers to other transport systems; the municipality in which each station is located; and the fare zone each station belongs to according to the Madrid Metro fare zone system.
#Terminal of a service*Transfer station to other transport systems#*Transfer station and terminal●Station served by all trains running through it○Limited service station
Station Service Cercanías Madrid transfers Other transfers Municipality Fare zone Príncipe Pío#* ● , Madrid Metro lines 6, 10 and Ramal National coach services Madrid Pirámides* ● Madrid Metro line 5 Madrid ● — Madrid Méndez Álvaro* ● , Madrid Metro line 6 Madrid * ● , , , , , , , Renfe Operadora-operated high-speed and long-distance rail servicesMadrid Metro line 1 at Atocha Renfe station National and international coach services Madrid ● , , , — Madrid * ● , , , , , , Madrid Metro lines 6, 8 and 10 Madrid * ● , , , , , , Renfe Operadora-operated high-speed and long-distance rail servicesMadrid Metro lines 1 and 10 National and international coach services Madrid Fuente de la Mora* ● , Madrid Metro Ligero line ML-1 Madrid ● — Madrid Aeropuerto T4#* ● Madrid Metro line 8 Madrid
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