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Line 1: Observatorio – Pantitlán
Line colour: Pink
Length of passenger track: 16.654 km
Total track length: 18.828 km
Stations: 20
Prevailing direction: West to east, through the centre of the city
Inaugurated:
- 4 September 1969: Chapultepec to Zaragoza
- 11 April 1970: Chapultepec to Juanacatlán
- 20 November 1970: Juanacatlán to Tacubaya
- 10 June 1971: Tacubaya to Observatorio
- 22 August 1984: Zaragoza to Pantitlán
Line 2: Cuatro Caminos – Tasqueña
Line colour: Blue
Length of passenger track: 20.713 km
Total track length: 23.431
Stations: 25
Prevailing direction: Northwest to south, through the centre of the city
Inaugurated:
Line 3: Indios Verdes – Universidad
Line colour: Khaki green
Length of passenger track: 21.278 km
Total track length: 23.609 km
Stations: 21
Prevailing direction: North to south, through the centre of the city
Inaugurated:
- 20 November 1970: Tlatelolco to Hospital General
- 25 August 1978: Tlatelolco to La Raza
- 1 December 1979: La Raza to Indios Verdes
- 7 June 1980: Hospital General to Centro Médico
- 25 August 1980: Centro Médico to Zapata
- 30 August 1983: Zapata to Universidad
Line 4: Santa Anita – Martín Carrera
Line colour: Aqua
Length of passenger track: 9.363 km
Total track length: 10.747 km
Stations: 10
Prevailing direction: North to south, to the east of the city centre
Inaugurated:
Line 5: Politécnico – Pantitlán
Line colour: Yellow
Length of passenger track: 14.435 km
Total track length: 15.675 km
Stations: 13
Prevailing direction: North to east
Inaugurated:
- 19 December 1981: Pantitlán to Consulado
- 1 July 1982: Consulado to La Raza
- 30 August 1982: La Raza to Politécnico
Line 6: El Rosario – Martín Carrera
Line colour: Scarlet
Length of passenger track: 11.434 km
Total track length: 13.947 km
Stations: 11
Prevailing direction: West to east, in the north of the city
Inaugurated:
- 21 December 1983: El Rosario to Instituto del Petróleo
- 8 July 1986: Instituto del Petróleo to Martín Carrera
Line 7: El Rosario – Barranca del Muerto
Line colour: Orange
Length of passenger track: 17.011 km
Total track length: 18.784 km
Stations: 14
Prevailing direction: North to south, west of the city centre
Inaugurated:
- 20 December 1984: Tacuba to Auditorio
- 22 August 1985: Auditorio to Tacubaya
- 19 December 1985: Tacubaya to Barranca
- 29 December 1988: Tacuba to El Rosario
Line 8: Garibaldi – Constitución de 1917
Line colour: Bright Green
Length of passenger track: 16.679 km
Total track length: 20.078 km
Stations: 19
Prevailing direction: City centre to south-east
Inaugurated:
Line 9: Tacubaya – Pantitlán
Line colour: Brown.
Length of passenger track: 13.033 km
Total track length: 15.375 km
Stations: 12
Prevailing direction: West to east, through the south of the city centre
Inaugurated:
Line A: Pantitlán – La Paz
Line colour: Plum-purple
Length of passenger track: 14.893 km
Total track length: 23.722 km
Stations: 10
Prevailing direction: East to far east
Inaugurated:
Line B: Buenavista – Ciudad Azteca
Line colour: Green-on-silver
Length of passenger track: 20.278 km
Total track length: 23.722 km
Stations: 21
Prevailing direction: City centre to far north-east
Inaugurated:
- 15 December 1999: Buenavista to Villa de Aragón
- 30 November 2000: Villa de Aragón to Ciudad Azteca
Xochimilco Light Rail: Tasqueña – Xochimilco
(not formally a part of the STC-Metro network)

