Tokyo Metro Marunouchi Line

Tokyo Metro Marunouchi Line

Other name(s) Line 4
Native name 東京地下鉄丸ノ内線
Type Rapid transit
Locale Tokyo
Termini Ogikubo
Stations 28 (including branch line)
Daily ridership 1,089,257 (FY2010)[1]
Opened January 20, 1954
Owner Tokyo Metro
Depot(s) Koishikawa, Nakano
Rolling stock Tokyo Metro 02 series
Line length 27.4 km (17.0 mi)
Track gauge 1,435 mm (4 ft 8 12 in)
Electrification 600 V DC, third rail
Operating speed 75 km/h (47 mph)
Route map

The Tokyo Metro Marunouchi Line (東京地下鉄丸ノ内線 Tōkyō Chikatetsu Marunouchi-sen) is a subway line in Tokyo, Japan, operated by the Tokyo subway operator Tokyo Metro. The line runs in a U-shape between Ogikubo Station in Suginami and Ikebukuro Station in Toshima, with a branch line between Nakano-Sakaue Station and Hōnanchō Station. The official name is Line 4 Marunouchi Line (4号線丸ノ内線 Yon-gōsen Marunouchi-sen).


The Marunouchi Line is the second line to be built in the city, and the first one constructed after the Second World War. The route is U-shaped, running from Ogikubo Station in the west of the city via the commercial and administrative district of Shinjuku through to the Marunouchi commercial center around Tokyo Station, before turning back and heading to Ikebukuro.

The Marunouchi Line is served by Tokyo Metro 02 series rolling stock in six-car trains on the main line, and three-car trains on the Hōnanchō branch. The main line is the most frequent subway line in Tokyo, with trains running at intervals of 1 minute 50 seconds during peak hours. In spite of such high-frequency service, according to a 2008 survey by the Ministry of Land, Infrastructure, Transport and Tourism the Marunouchi Line is one of the most crowded railway lines in Tokyo, running at 157% capacity between Shin-ōtsuka and Myōgadani stations.[2] Its age and relatively short train length has made it one of the most crowded lines in Tokyo, although the 2000 opening of the Toei Ōedo Line has relieved the problem somewhat. In response to crowding, Tokyo Metro upgraded all stations with chest-high platform doors on March 28, 2009, a date on which it also began driver-only operation . The Hōnanchō branch switched to driver-only operation in July 2004.[3]

Due to the age of the Marunouchi Line and the relative shallowness at which it runs, at several points in central Tokyo trains run at or above ground level. These include Yotsuya Station, the Kanda River near Ochanomizu Station (see image), and between Kōrakuen and Myōgadani stations.

On maps, diagrams and signboards, the line is shown using the color red (). Its stations are given numbers using the prefix "M"; Hōnanchō branch line stations carry a lowercase "m".

Station list

All stations are located in Tokyo.

Main Line

No. Station Japanese Distance (km) Transfers Location
From M-01
M-01 Ogikubo 荻窪 - 0.0 Chūō Line (Rapid), Chūō-Sōbu Line Suginami
M-02 Minami-Asagaya 南阿佐ケ谷 1.5 1.5  
M-03 Shin-Kōenji 新高円寺 1.2 2.7  
M-04 Higashi-Kōenji 東高円寺 0.9 3.6  
M-05 Shin-Nakano 新中野 1.0 4.6   Nakano
M-06 Nakano-Sakaue 中野坂上 1.1 5.7 Marunouchi Line (for Hōnanchō; some trains through to Nakano-Fujimichō)
Toei Ōedo Line (E-30)
M-07 Nishi-Shinjuku 西新宿 1.1 6.8   Shinjuku
M-08 Shinjuku 新宿 0.8 7.6 Toei Shinjuku Line (S-01), Toei Ōedo Line (E-27, Shinjuku-Nishiguchi: E-01)
Chūō Line (Rapid), Chūō-Sōbu Line, Yamanote Line, Shōnan-Shinjuku Line, Saikyō Line
Keiō Line, Keiō New Line
Odakyū Odawara Line
Seibu Shinjuku Line (Seibu-Shinjuku)
M-09 Shinjuku-Sanchōme 新宿三丁目 0.3 7.9 Tokyo Metro Fukutoshin Line (F-13)
Toei Shinjuku Line (S-02)
M-10 Shinjuku-Gyoemmae 新宿御苑前 0.7 8.6  
M-11 Yotsuya-Sanchōme 四谷三丁目 0.9 9.5  
M-12 Yotsuya 四ツ谷 1.0 10.5 Tokyo Metro Namboku Line (N-08)
Chūō Line (Rapid), Chūō-Sōbu Line
M-13 Akasaka-Mitsuke 赤坂見附 1.3 11.8 Tokyo Metro Ginza Line (G-05), Tokyo Metro Yūrakuchō Line (Nagatachō: Y-16), Tokyo Metro Hanzōmon Line (Nagatachō: Z-04), Tokyo Metro Namboku Line (Nagatachō: N-07) Minato
M-14 Kokkai-Gijidō-mae 国会議事堂前 0.9 12.7 Tokyo Metro Chiyoda Line (C-07), Tokyo Metro Ginza Line (Tameike-Sannō: G-06), Tokyo Metro Namboku Line (Tameike-Sannō: N-06) Chiyoda
M-15 Kasumigaseki 霞ケ関 0.7 13.4 Tokyo Metro Hibiya Line (H-06), Tokyo Metro Chiyoda Line (C-08)
M-16 Ginza 銀座 1.0 14.4 Tokyo Metro Ginza Line (G-09), Tokyo Metro Hibiya Line (H-08)
Underground passage to Higashi-Ginza, Hibiya, Yūrakuchō stations
M-17 Tokyo 東京 1.1 15.5 Tohoku Shinkansen, Akita Shinkansen, Yamagata Shinkansen, Joetsu Shinkansen, Nagano Shinkansen, Yamanote Line, Chūō Main Line, Tokaido Main Line, Sōbu Main Line, Yokosuka Line, Keiyō Line, Keihin-Tōhoku Line, Musashino line
Tokaido Shinkansen
M-18 Ōtemachi 大手町 0.6 16.1 Tokyo Metro Tōzai Line (T-09), Tokyo Metro Chiyoda Line (C-11), Tokyo Metro Hanzōmon Line (Z-08)
Toei Mita Line (I-09)
M-19 Awajichō 淡路町 0.9 17.0 Tokyo Metro Chiyoda Line (Shin-Ochanomizu: C-12)
Toei Shinjuku Line (Ogawamachi: S-07)
M-20 Ochanomizu 御茶ノ水 0.8 17.8 Chūō Line (Rapid), Chūō-Sōbu Line Bunkyō
M-21 Hongō-Sanchōme 本郷三丁目 0.8 18.6 Toei Ōedo Line (E-08)
M-22 Kōrakuen 後楽園 0.8 19.4 Tokyo Metro Namboku Line (N-11)
Toei Mita Line (Kasuga: I-12), Toei Ōedo Line (Kasuga: E-07)
M-23 Myōgadani 茗荷谷 1.8 21.2  
M-24 Shin-Ōtsuka 新大塚 1.2 22.4  
M-25 Ikebukuro 池袋 1.8 24.2 Tokyo Metro Yūrakuchō Line (Y-09), Tokyo Metro Fukutoshin Line (F-09)
Yamanote Line, Saikyō Line, Shōnan-Shinjuku Line
Seibu Ikebukuro Line
Tōbu Tōjō Line

Branch Line

No. Station Japanese Distance (km) Transfers Location
Mb-03 Hōnanchō 方南町 - 0.0   Suginami
Mb-04 Nakano-Fujimichō 中野富士見町 1.3 1.3   Nakano
Mb-05 Nakano-Shimbashi 中野新橋 0.6 1.9  
M-06 Nakano-Sakaue 中野坂上 1.3 3.2 Tokyo Metro Marunouchi Line (for Ikebukuro and Ogikubo; some trains through)
Toei Ōedo Line (E-30)

Rolling stock

An 02 series EMU at Yotsuya Station in June 2007

Marunouchi Line services are operated using a fleet of 53 Tokyo Metro 02 series six-car EMUs in service since 1988 together with six three-car sets used on Hōnanchō branch services. All trains are based at Koishikawa and Nakano Depots.[4]

A fleet of 53 new six-car trains is scheduled to be introduced from fiscal 2018, replacing the 02 series trains by fiscal 2022.[5]



Opening ceremony at Ikebukuro in 1954

The Marunouchi Line is the second subway line to be built in the city, and the first to be constructed after the Second World War. Its design is similar to that of the Ginza Line, the oldest subway line in Tokyo. Both lines are standard gauge and use third-rail power, unlike the other Tokyo subway lines.

In a 1925 plan for a five-line subway system, the Marunouchi Line was planned to run from Shinjuku to Ōtsuka via Hibiya, Tsukiji and Okachimachi, as a 20 km (12 mi) underground route. A 1.2 km (0.75 mi) segment between Akasaka-mitsuke and Yotsuya began construction in 1942, but was abandoned in 1944 as a result of the continuing effects of World War II. On December 7, 1946, the Marunouchi Line was revised to begin from Nakano-fujimichō to somewhere in Toshima Ward, for a total length of 22.1 km (13.7 mi) On March 30, 1951, a groundbreaking ceremony was held at Ikebukuro Station East Exit to begin construction of the initial 7.7 km (4.8 mi) segment of the Marunouchi Line.

The first section was opened between Ikebukuro and Ochanomizu on January 20, 1954. The subsequent progress of the line was as follows:

The Marunouchi Line was one of the lines targeted in the Aum sarin gas attack on March 20, 1995.

Future plans

The platform-edge doors at Hōnanchō Station, the terminus of the Hōnanchō Branch are due to be lengthened to allow 6-car trains to use the station, with work starting in 2013. Once completed, this will enable through trains to and from Ikebukuro to start operating all the way to Hōnanchō from fiscal 2017.[6]


  • Shaw, Dennis and Morioka, Hisashi, "Tokyo Subways", published 1992 by Hoikusha Publishing
  1. Tokyo Metro station ridership in 2010 Train Media (sourced from Tokyo Metro) Retrieved May 28, 2012.
  3. News: 丸ノ内線全線でワンマン運転開始 28日から (17 March 2009). Retrieved on 17 March 2009. (Japanese)
  4. 私鉄車両編成表 2016 [Private Railway Rolling Stock Formations - 2016] (in Japanese). Japan: Kotsu Shimbunsha. 25 July 2016. p. 69. ISBN 978-4-330-70116-5.
  5. 大手民鉄 2016年度の車両の新造・更新予定 [Major private railway fiscal 2016 rolling stock construction and refurbishment plans]. Tetsudo Daiya Joho Magazine (in Japanese). Vol. 45 no. 389. Japan: Kotsu Shimbun. September 2016. p. 70.
  6. 丸ノ内線、方南町駅へ直通運転開始 東京メトロが17年度から [Tokyo Metro to operate through trains on Marunouchi Line to Hōnanchō Station from fiscal 2017]. Nikkei Shimbun (in Japanese). Japan: Nikkei Inc. 13 November 2013. Retrieved 14 November 2013.

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