Mexico City Metro Line 1

The first section of Line 1 was opened on 4 September 1969 as part of Mexico City Metro's first construction stage, it was inaugurated by Gustavo Díaz Ordaz, President of Mexico from 1964 to 1970, and Alfonso Corona del Rosal, Regent of the Federal District Department.^[4] The inauguration ceremony took place at the Insurgentes station.^[5]

The next day the line was opened to the public. To the original route (Chapultepec–Zaragoza) a new station, Juanacatlán, was added to the west on 11 April 1970, and the first correspondencia (a transfer station) became functional on 1 August 1970 when Line 2 was opened. The two westernmost stations Tacubaya and current terminal Observatorio were inaugurated on 20 November 1970 and 10 June 1972 respectively.

Station Pantitlán was opened on 22 August 1984 as the eastern terminal during a fourth and final expansion. All twenty stations have operated since then, running a total track length of 18.83 km (11.70 mi), of which 16.65 km (10.35 mi) are passenger track. The 1 is the only line in the network that is fully underground except for some surface track in Observatorio used for maintenance.

As of 2020, an extension of Line 12 is under construction, this stretch will connect Line 12 with Line 1 at the Observatorio station.^[3]

Authorities warned on 10 August 2020 that Line 1 is in danger of a major fire due to an aging electrical system that is in need of major improvements. Lines 1, 2, and 3 report an average of 2.5 electrical failures daily.^[6] As a result, the line started undergo renovations that require its closure. The first closure was from Pantitlán to Salto de Agua stations, starting on 11 July 2022 with March 2023 being the expected completion date. The second closure was expected to start in March 2023 from Balderas to Observatorio stations and was expected to conclude in August 2023. During both periods, all railway elements will be replaced with modern material, the wiring will be replaced, damage due to leaks and cracks will be repaired, stations that are not yet modernized will be updated, and accessibility will be added to stations that lack it.^[7][8]

In April 2023, Siemens Mobility claimed that they would install CBTC on Line 1.^[9] On October 29, 2023, the modernized section of Line 1 was inaugurated.^[10] Salto del Agua and Balderas stations was reopened on September 13, 2024.^[11] The second stage is expected to begin on 9 November 2023.^[12]

On November 16, 2025, the Observatorio - Chapultepec section of metro line 1 was reopened, thus completing its full modernization.^[13] The modernization, which included CBTC installation, is expected to increase capacity by 15%.^[14]

• September 4, 1969: from Chapultepec to Zaragoza.
• April 11, 1970: from Chapultepec to Juanacatlán.
• November 20, 1970: from Juanacatlán to Tacubaya.
• June 10, 1972: from Tacubaya to Observatorio.
• August 22, 1984: from Zaragoza to Pantitlán.

Line 1 has had different types of rolling stock throughout the years.

• Alstom MP-68, 1969–2018
• Concarril NM-73, 1978–2018
• Alstom MP-82, 1985–1994
• Concarril NM-83, 1989–2018
• CAF NE-92, 1994–2023
• Bombardier NC-82, 2006–2007
• Concarril NM-79, 2011–2012
• CAF NM-16, since 2019
• CRRC NM-22, since 2024

Currently, out of the 390 trains in the Mexico City Metro network, 49 are in service in Line 1.^[15]

Key^[a]

	Fully accessible station			Cablebús connection			RTP connection
	Partially accessible station			Mexibús connection			Tren Interurbano connection
	CETRAM transfer station			Mexicable connection			Tren Suburbano connection
	ETRAM transfer station			Mexico City Metro connection			Trolleybus connection
	Ecobici bikeshare			Pesero connection			Xochimilco Light Rail connection

The stations from east to west:

More information Station, Opened ...

Station		Opened	Level	Distance (km)		Connections	Location
				Between stations	Total
Pantitlán		August 22, 1984	Underground	—N/a	0.0	168 11B, 11C, 19F, 19G	Venustiano Carranza
Zaragoza		September 4, 1969		1.5	1.5	162B, 163, 163A, 163B, 164, 166, 167
Gomez Farías				0.9	2.4
Boulevard Puerto Aéreo				0.7	3.1	43 20B, 22D
Balbuena				0.8	3.9
Moctezuma				0.8	4.7
San Lázaro				0.7	5.4	East Bus Terminal
Candelaria				1.1	6.4	(at Cecilio Robelo) 37 5A
Merced				0.9	7.3	5A
Pino Suárez				0.8	8.2	2A, 31B, 111A, 145A 17C, 17H, 17I, 19E, 19F, 19G, 19H	Cuauhtémoc
Isabel la Católica				0.5	8.7	19E, 19F, 19G, 19H
Salto del Agua				0.6	9.3	19E, 19F, 19G, 19H
Balderas				0.6	9.9	34A 19E, 19F, 19G, 19H
Cuauhtémoc				0.5	10.5	34A 19E, 19F, 19G, 19H
Insurgentes				0.9	11.4	(at Glorieta de los Insurgentes) 34A 19E, 19F, 19G, 19H
Sevilla				0.8	12.2	19, 19A, 34A 13D, 18C, 19E, 19F, 19G, 19H
Chapultepec				0.6	12.9	(at Chapultepec) 11A, 13A, 34A, 115A, 200 7D, 8A, 8B, 8C, 8D, 13C, 13E, 18C, 18D, 19E, 19F, 19G, 19H, 21A
Juanacatlán		April 11, 1970		1.1	14.0	13A, 115A 21A	Miguel Hidalgo
Tacubaya		November 20, 1970		1.3	15.2	110, 110B, 110C, 112, 113B, 115, 118, 119, 200 1B, 9C, 9E, 21A
Observatorio		June 10, 1972	Ground-level	1.4	16.7	(under construction) El Insurgente (at Observatorio) 21D West Bus Terminal	Álvaro Obregón

Close

The following table shows each of Line 1 stations total and average daily ridership during 2019.^[23]

Line 1 passes near several places of interest.

• Bosque de Chapultepec, city park
  • Museo de Arte Moderno, museum of modern art
  • Chapultepec Castle
  • Heroic Cadets Memorial, a monument dedicated to the memory of the Niños Héroes
  • Chapultepec Zoo
• Estela de Luz, a monument that commemorates the bicentenary of Mexico's independence
• Paseo de la Reforma, emblematic avenue of Mexico City
• Diana the Huntress Fountain, a monumental fountain of Diana located at Paseo de la Reforma
• Angel of Independence, a victory column on a roundabout on the major thoroughfare of Paseo de la Reforma
• Zona Rosa, a neighborhood known for its shopping centers, nightlife, gay community, and Korean community
• Historic center of Mexico City

• List of Mexico City Metro lines