List of longest subway tunnel sections


This page presents a list of the longest continuous subway tunnel sections of the world, excluding branches from the longest tunnel.
Note: This article only lists tunnels that are 10 kms or longer.

World's longest subway tunnel sections in use

NameSystemCountryStationsLength in km Year of
completion
Line 3Guangzhou MetroAirport North – Panyu Square68.53 2018
Line 10Beijing SubwayCircle route57.1 2013
Line 6Beijing SubwayJin'anqiao – Lucheng53.4 2018
Seoul Subway Line 5Seoul Metropolitan Rapid Transit CorporationBanghwa–Macheon47.6
1996
Line 2Wuhan MetroJinyintan – Fozuling44.347 2019
Downtown MRT LineMass Rapid Transit Bukit Panjang – Expo44.2 2017
Line 5Chengdu MetroJiudaoyan – Huilong42.3 2019
Line 3Nanjing MetroXinghuolu – Mozhoudonglu41.5 2015
Line 4Suzhou Rail TransitLongdaobang — Tongli41.5 2017
Serpukhovsko-Timiryazevskaya LineMoscow MetroAltufyevo – Bulvar Dmitriya Donskogo41.5 2002
Metro Madrid L-12: Madrid MetroCircle route40.96 2003
Toei Oedo Line TMBT SubwayHikarigaoka – Shiodome – Tocho-mae40.7 2000
Seoul Subway Line 9Seoul Metro Line 9 CorporationGimpo Airport – VHS Medical Center40.6 2018
Line 12Shanghai MetroQixin Road – Jinhai Road40.4 2015
Line 7Beijing SubwayBeijing West Railway Station - Hua Zhuang40.3 2019
Line 4Chengdu MetroWansheng – Chengdu University39.3 2017
Line 7Chengdu MetroCircle route38.6 2017
Lyublinsko-Dmitrovskaya LineMoscow MetroZyablikovo – Seligerskaya38.3 2018
Line 3Chengdu MetroChengdu Junqu General Hospital – Shuangliu West Station38.1 2018
Kaluzhsko-Rizhskaya LineMoscow MetroMedvedkovo – Novoyasenevskaya37.8 1990
Line 1Chengdu MetroWeijianian – Science City37.47 2018
Line 2Shenzhen MetroChiwan – Xinxiu35.78 2011
Busan Subway Line 2Busan Transportation CorporationJangsan–Dongwon35.5 1999
Seoul Subway Line 6Seoul Metropolitan Rapid Transit CorporationEungam Loop – Bonghwasan35.1 2001
Seoul Subway Line 7
Seoul Metropolitan Rapid Transit CorporationCheongdam – Bupyeong-gu Office35.1 2012
Line 7Shanghai MetroPanguang Road – Huamu Road34.4 2010
Circle MRT LineMass Rapid Transit Dhoby Ghaut – HarbourFront33.3 2011
Metro Madrid L-7Madrid MetroHospital del Henares – Pitis32.9 2007
U7Berlin U-BahnRathaus Spandau-Rudow31.8 1984
IND Eighth Avenue Line and IND Fulton Street LineNew York City SubwayInwood – 207th Street – Grant Avenue30.8 1956
Line 2 OrangeMontreal MetroCôte-Vertu – Montmorency30.8 2007
Line 2Shanghai MetroEast Xujing – Longyang Road30.2 2010
Moskovsko-Petrogradskaya LineSaint Petersburg MetroParnas–Kupchino29.7 2006
Line 8, Shanghai MetroShanghai MetroShiguang Road – Luheng Road29.7 2009
Kirovsko-Vyborgskaya LineSaint Petersburg MetroDevyatkino – Prospekt Veteranov29.4 1978
Line 2Chengdu MetroTianhe Road – Chengdu Institute of Public Administration29.0 2012–2013
Sydney Metro NorthwestSydney MetroKellyville – Chatswood section28.5 km 2009–2019
Bannan Line Taipei MetroDingpu – Taipei Nangang Exhibition Center28.2
1999–2015
Incheon Subway Line 1Incheon SubwayBakchon – International Business District27.9 1999–2009
Northern lineLondon UndergroundMorden – East Finchley27.8 1890–1940
Line 3Saint Petersburg MetroBegovaya–Rybatskoye27.5 1967–2018
Tanimachi LineOsaka MetroDainichi–Nagahara27.1 1967–1983
M4 Istanbul MetroKadıköy–Tavşantepe26.5 2012–2016
Meijo Line Nagoya Municipal SubwayKanayama–Nagoya Dome-mae Yada-Kanayama26.4 1965–2004
B Line Los Angeles MetroNorth Hollywood - Union Station26.4 1993
Line 5 Saint Petersburg MetroKomendantsky Prospekt – Shushary26.0 1997–2019
Line 1Suzhou MetroMudu – Zhongnan Jie25.7 2012
Line 1 Athens MetroPiraeus–Kifissia25.7 1896–2004
Zhonghe-Xinlu Line Taipei MetroHuilong–Nanshijiao25.1
1998–2013
Yurakucho LineTokyo MetroChikatetsu Narimasu – Tatsumi24.6 1974–1988
Munich U-Bahn U2Munich U-BahnFeldmoching – Messestadt Ost24.4 1980–2001
Yellow LineDelhi MetroGTB Nagar – Qutub Minar24 2010
L-1Madrid MetroValdecarros – Pinar de Chamartín23.88 1919–2007
L-6Madrid MetroCircle route23.47 1979–2007
Line 9Shanghai MetroJiuting – Middle Yanggao Road23.3 2007–2010
Line 1 GreenMontreal MetroAngrignon – Honoré-Beaugrand23.26 1966–1978
Warsaw Metro L-1Warsaw MetroKabaty–Młociny23.1 1995–2008
Line 2Beijing SubwayCircle route23.1 1984–1987
Songshan-Xindian Line Taipei MetroSongshan-Xindian21.3 1998–2014
Line 4Shanghai MetroHailun Road – Yishan Road21.1 2005–2007
Toei Mita LineToei SubwayMeguro – Shimura-Sakaue21.1 1968–2000
Victoria lineLondon UndergroundWalthamstow Central – Brixton21.0 1968–1971
Line 6, Shanghai MetroShanghai MetroBoxing Road – Oriental Sports Center20.34 2007–2011
Tozai Line Sapporo Municipal Subway Miyanosawa – Shin-Sapporo 20.1 1976–1999
Metro Madrid L-5Madrid MetroAlameda de Osuna – Empalme20.005 1968–2006
North East MRT LineMass Rapid Transit HarbourFront–Punggol20.0 2003–2011
Bucharest Metro Line M3Bucharest MetroPreciziei – Anghel Saligny20.0 1983–2008
Paris Métro Line 9Paris MétroPont de Sèvres – Mairie de Montreuil19.6 1922–1937
Red, Yellow, Blue, and Green LinesBay Area Rapid Transit, San FranciscoBalboa Park – West Oakland19.5 1973
Kol'tsevaya LineMoscow MetroCircle route19.4 1950–1954
Munich U-Bahn U3Munich U-Bahn19.4 1972–2009
Midosuji LineOsaka MetroNakatsu – Nakamozu19.1 1933–1987
Mexico City Metro Line 3Mexico City MetroLa Raza – Universidad18.7 1970–1983
Paris Métro Line 7Paris MétroLa Courneuve – 8 Mai 1945 – Villejuif – Louis Aragon18.6 1910–1987
Line 1Shanghai MetroShanghai South Railway – Shanghai Circus World18.1 1993–2004
Avtozavodskaya LineMinsk MetroKamennaya Gorka – Mogilevskaya18.1 1990–2005
Line BPrague MetroRajská zahrada – Hůrka18.0 1998
Line 2 Athens MetroAnthoupoli–Elliniko17.9 2013
Line 3 Athens MetroAgia Marina – Doukissis Plakentias17.8 2013
Washington, DC Metro Red LineWashington MetroUnion Station – Medical Center17.8 1984
Tozai LineKyoto Municipal SubwayUzumasa Tenjingawa-Yamashina-Rokujizo17.5 2008
Maskoŭskaja lineMinsk MetroPyatrowshchyna–Uruchcha17.4 2012
Tōzai LineTokyo MetroNakano–Minami-Sunamachi17.0 1969
Line 4Barcelona MetroTrinitat Nova – La Pau16.7 1999
Mexico City Metro Line 1Mexico City MetroObservatorio – Metro Pantitlán16.7 1984
Line 3Barcelona MetroZona Universitària – Canyelles16.6 2001
Metro Madrid L-3Madrid MetroVillaverde Alto – Moncloa16.424 2007
Line 1Chongqing Rail TransitChaotianmen – Shapingba16.4 2011
Metro Madrid L-4Madrid MetroArgüelles – Pinar de Chamartín16.0 2007
Sviatoshynsko-Brovarska LineKiev MetroAkademmistechko–Dnipro16.0 2003
Seoul Subway Line 7
Seoul Metropolitan Rapid Transit CorporationSuraksan – Konkuk University16.0 1996
M3 LineCopenhagen MetroCircle Route2019
Line 3Budapest Metro HungaryHatár út–Újpest-központ
Line is 17.39 km long, but only 15.5 km of it is underground.		1990
Syretsko-Pecherska LineKiev MetroSyrets – Pivdennyi Bridge15.2 2004
Line 1 Kolkata MetroMahanayak Uttam Kumar -Dum Dum15.17 1995
Line 10Chengdu MetroTaipingyuan – Shuangliu West15.0 2019
Line 1, redTehran MetroTajrish–Shush14.9 2012
Blue Line, line 10Stockholm MetroKungsträdgården–Hjulsta14.3 1977
Tokyo Metro Ginza LineTokyo SubwayAsakusa–Shibuya14.1 1997
Metro Madrid L-2Madrid MetroLas Rosas – Cuatro Caminos14.031 2011
MTR - Island LineMTR, Hong Kong, China, ChinaKennedy Town – Heng Fa Chuen14.0 1985/1986/2014
Paris Métro Line 12Paris MétroPorte de la Chapelle – Mairie d'Issy13.9 1934
Blue LineChennai Metro-13.482019
Line 2Barcelona MetroParal•lel – Pep Ventura13.1 1997

World's longest subway tunnel sections under construction

NameSystemCountryStationsLengthExpected completion
Ligne 15Paris Métro2022–2030
Line 6Chengdu Metro2020
Bolshaya Koltsevaya lineMoscow Metro2018 partially;
other sections up to 2023
Line 18Chengdu MetroWhole line is 77.123 km2020
Cross Island LineMass Rapid Transit

2029-2031
Line 18Guangzhou MetroGuangzhou East railway station to 2020
Thomson–East Coast LineMass Rapid Transit Woodlands North to Sungei Bedok
2020-2024
Line 17Chengdu MetroWhole line 81.48 km and 4.442 km are not underground in Phase 1 and 22020 for Phase 1 underground section / 2024 for Phase 2
L9 / L10Barcelona Metro
2016 partially;
central section unknown
:zh:成都地铁19号线|Chengdu Metro Line 19Chengdu Metro2022
Line 8Chengdu Metro2020
Mumbai Metro Line 3Mumbai MetroCuffe Parade-SEEPZ2021
:zh:成都地铁13号线|Chengdu Metro Line 13Chengdu MetroQiligou ~ Longhua Temple underground section2024
Purple Line ExtensionLos Angeles MetroWestwood/VA Hospital - Union Station24.3 km 2025-2026
Line 30Chengdu Metro2024
Line 9Chengdu MetroPhase 1 of the second loop line in Chengdu, all underground2020
Line 27Chengdu MetroWhole line is 24.86km, but only 17.34km underground2024