This page presents a list of the longest continuous underground rapid transit tunnel sections of the world, excluding branches from the longest tunnel (branch lines that used to transport passengers should be included).

Note: This article only lists tunnels that are 15 km (6.2 miles) or longer.

World's longest subway tunnel sections in use

Name System Country Stations Length in km (mi) Year of
completion
Line 6 Chengdu Metro  China Wangcong TempleLanjiagou 68.2 (42.4)[1] 2020
Line 1 Qingdao Metro  China Dongguozhuang to Wangjiagang 59.82 km (37.17 mi) 2020-2021
Line 18 Guangzhou Metro  China Xiancun[2] to Wanqingsha 58.3 (36.2)[2] 2021
Line 3 Guangzhou Metro  China Airport NorthPanyu Square 57.93 (36) 2005-2018
Bolshaya Koltsevaya line Moscow Metro  Russia Circle route 57.54 km (35.75 mi)[3][4]
(excluding Moscow-City branch)
2018-2023[5]
Line 10 Beijing Subway  China Circle route 57.1 (35.5) 2008-2013
Line 6 Beijing Subway  China Jin'anqiaoLucheng 53.4 (33.2) 2012-2018
Seoul Subway Line 5 Seoul Metro  South Korea BanghwaHanam Geomdansan 51.7 km (32.1 mi)
(longest branch)
1995-2021
Line 2 Wuhan Metro  China Julong Boulevard - Fozuling 50.347 (27.556) 2012-2019
Metro NorthWest-City-SouthWest Sydney Metro  Australia Line is 66 km long, of which 45 km in tunnel. 45 km (28 mi) 2019-24
Lyublinsko-Dmitrovskaya line Moscow Metro  Russia ZyablikovoFiztekh 44.3 (23.8) 1995-2023
Line 8 Beijing Subway  China Yuzhi LuWufutang 42.6 (26.4) 2012–2021
Line 15 Shanghai Metro  China Gucun ParkZizhu Hi-tech Park 42.3 (26.3) 2021
Line 5 Chengdu Metro  China JiudaoyanHuilong 42.3 (26.3) 2019
Line 14 Beijing Subway  China DawayaoShangezhuang 42 (26) 2015–2021
Line 6 Tianjin Metro  China Nanhezhuang – Lushuidao 42 (26) 2016–2021
Downtown MRT line Mass Rapid Transit (Singapore)  Singapore Bukit PanjangExpo 41.9 (26)[6] 2013-2017
Line 3 Nanjing Metro  China XinghuoluMozhoudonglu 41.5 (25.8) 2015
Line 4 Suzhou Rail Transit  China Longdaobang — Tongli 41.5 (25.8) 2017
Serpukhovsko-Timiryazevskaya line Moscow Metro  Russia AltufyevoBulvar Dmitriya Donskogo 41.5 (25.7) 1983-2002
L-12: (Metro Sur) Madrid Metro  Spain Circle route 40.96 (25.5) 2003
Toei Oedo Line TMBT Subway  Japan HikarigaokaShiodomeTocho-mae 40.7 (25.3) 2000
Seoul Subway Line 9 Seoul Metro Line 9 Corporation  South Korea Gimpo AirportVHS Medical Center 40.6 (25.2) 2018
Line 12 Shanghai Metro  China Qixin RoadJinhai Road 40.4 (25.1) 2015
Line 7 Beijing Subway  China Beijing West railway station - Universal Resort 40.3 (25.0) 2021
Line 4 Chengdu Metro  China Wansheng – Chengdu University 39.3 (24.4) 2015-2017
Line 7 Chengdu Metro  China Circle route 38.6 (24.0) 2017
Kaluzhsko-Rizhskaya line Moscow Metro  Russia MedvedkovoNovoyasenevskaya 37.8 (23.5) 1958-1990
Line 1 Chengdu Metro  China Weijianian – Science City 37.47 (23.3) 2010-2018
M11 Istanbul Metro  Turkey Kağıthane – Kargo Terminali 37.2 (23.1) 2023
Line 2 Shenzhen Metro  China ChiwanXinxiu 35.78 (22.23) 2011
Busan Subway Line 2 Busan Transportation Corporation  South Korea JangsanDongwon 35.5 (22.06) 1999
Seoul Subway Line 6 Seoul Metro  South Korea Eungam LoopBonghwasan 35.1(21.8) 2001
Seoul Subway Line 7

(Longest Branch)

Seoul Metro  South Korea CheongdamBupyeong-gu Office 35.1

(21.7)

2012
Line 5 Tianjin Metro  China Beichenkejiyuanbei – Liqizhuangnan 34.8 (21.6) 2018–2021
Line 7 Shanghai Metro  China Panguang RoadHuamu Road 34.4 (21.38) 2010
Line 8 Guangzhou Metro  China WanshengweiJiaoxin 33.9 (21.1) 2010-2020
M4 Istanbul Metro  Turkey KadıköySabiha Gökçen Havalimanı 33.5 (20.8) 2012–2022
Circle MRT line Mass Rapid Transit (Singapore)  Singapore Dhoby GhautHarbourFront 33.3 (20.69)[7] 2011
L-7 Madrid Metro  Spain Hospital del HenaresPitis 32.9 (20.5) 2007
U7 Berlin U-Bahn  Germany Rathaus Spandau-Rudow 31.8 (19.7)[8] 1924-1984
Line 1 Beijing Subway  China PingguoyuanDawang Lu 31.0 (19.3) 1971–2000
Line 16 Beijing Subway  China Bei'anheYuyuantan East Gate 31.0 (19.2) 2016–2021
IND Eighth Avenue Line and IND Fulton Street Line[9] New York City Subway  United States Inwood – 207th StreetGrant Avenue 30.8 (19.14) 1956
Line 2 Orange Montreal Metro  Canada Côte-VertuMontmorency 30.8 (19.14) 2007
Line 2 Shanghai Metro  China East XujingLongyang Road 30.2 (18.77) 2010
Moskovsko-Petrogradskaya Line Saint Petersburg Metro  Russia ParnasKupchino 29.7 (18.54) 1961-2006
Line 8, Shanghai Metro Shanghai Metro  China Shiguang RoadLuheng Road 29.7 (18.45) 2009
Kirovsko-Vyborgskaya Line Saint Petersburg Metro  Russia DevyatkinoProspekt Veteranov 29.4 (18.35) 1955-1978
Line 8 Chengdu Metro  China (Phase 2 is 7.94 km) 29.1 (18.1) 2020
Line 2 Chengdu Metro  China Tianhe Road – Chengdu Institute of Public Administration 29.0 (18.0) 2012–2013
Bannan Line (Taipei Metro Blue Line) Taipei Metro  Taiwan DingpuTaipei Nangang Exhibition Center 28.2 (17.6)
1999–2015
Line 4 Beijing Subway  China Anheqiao Bei (N)Gongyi Xiqiao 28.2 (17.5) 2009-2010
Incheon Subway Line 1 Incheon Subway  South Korea BakchonInternational Business District 27.9 (17.42) 1999–2009
Northern line London Underground  United Kingdom MordenEast Finchley 27.8 (17.2) 1890–1940
Nevsko-Vasileostrovskaya Line Saint Petersburg Metro  Russia BegovayaRybatskoye 27.5 (17.1) 1967–2018
Tagansko-Krasnopresnenskaya line Moscow Metro  Russia PlanernayaTekstilshchiki 27.5 (17.1) 1938-2018
Tanimachi Line Osaka Metro  Japan DainichiNagahara 27.1 (16.7) 1967–1983
Meijo Line Nagoya Municipal Subway  Japan KanayamaNagoya Dome-mae Yada-Kanayama 26.4 (16.4) 1965–2004
B Line Los Angeles Metro Rail  United States North Hollywood - Union Station 26.4 (16.4) 1993–2000
Frunzensko-Primorskaya Line Saint Petersburg Metro  Russia Komendantsky ProspektShushary 26.0 (16.2) 1997–2019
Line 1 Suzhou Metro  China MuduZhongnan Jie 25.7 (16.0) 2012
Line 3 (Athens Metro)[10] Athens Metro  Greece Dimotiko TheatroDoukissis Plakentias 25.3 (15.72) 2023
Zamoskvoretskaya line Moscow Metro  Russia KhovrinoTekhnopark 25.2 (15.7) 1938-2018
Helsinki Metro Helsinki Metro  Finland KalasatamaKivenlahti 25.2 (15.7) 1982–2022
Zhonghe-Xinlu Line (Taipei Metro Orange Line) Taipei Metro  Taiwan HuilongNanshijiao 25.1 (15.6)
(longest branch)
1998–2013
Line 3 Santiago Metro  Chile Plaza de Quilicura - Fernando Castillo Velasco 25 (13.5) 2019-2023
Yurakucho Line Tokyo Metro  Japan Chikatetsu NarimasuTatsumi 24.6 (15.3) 1974–1988
Munich U-Bahn U2 Munich U-Bahn  Germany FeldmochingMessestadt Ost 24.4 (15.2) 1980–2001
Yellow Line Delhi Metro  India GTB NagarSaket 24 (14.9)[11][12] 2009-2010
L-1 Madrid Metro  Spain ValdecarrosPinar de Chamartín 23.88 (14.84) 1919–2007
L-6 Madrid Metro  Spain Circle route 23.47 (14.58) 1979–2007
Line 9 Shanghai Metro  China JiutingMiddle Yanggao Road 23.3 (14.48) 2007–2010
Line 1 Green Montreal Metro  Canada AngrignonHonoré-Beaugrand 23.26 (14.45) 1966–1978
Warsaw Metro M1 Warsaw Metro  Poland KabatyMłociny 23.1 (14.35) 1995–2008
Line 2 Beijing Subway  China Circle route 23.1 (14.35) 1984–1987
Line 9 Chengdu Metro  China Phase 1 of the second loop line in Chengdu, all underground 22.18 km (13.78 mi) 2020
Line 19 Beijing Subway  China MudanyuanXingong 22.4 (13.9) 2021
Songshan-Xindian Line (Taipei Metro Green Line) Taipei Metro  Taiwan Songshan-Xindian 21.3 (13.2) 1998–2014
Line 4 Shanghai Metro  China Hailun RoadYishan Road 21.1 (13.11) 2005–2007
Toei Mita Line Toei Subway  Japan MeguroShimura-Sakaue 21.1 (13.11) 1968–2000
Victoria line London Underground  United Kingdom Walthamstow CentralBrixton 21.0 (13.05) 1968–1971
Obolonsko–Teremkivska line Kyiv Metro  Ukraine Heroiv DnipraTeremky 20.95 (13.02) 1976-2013
Line 6, Shanghai Metro Shanghai Metro  China Boxing RoadOriental Sports Center 20.34 (12.64) 2007–2011
Line 1 Barcelona Metro  Spain Fondo – Hospital de Bellvitge 20.2 (12.56) 1926-1989
Tozai Line Sapporo Municipal Subway  Japan Miyanosawa – Shin-Sapporo 20.1 (12.4) 1976–1999
M1 Ankara Metro  Turkey KoruAtatürk Kültür Merkezi 20.1 (12.4) 1997–2014
L-5 Madrid Metro  Spain Alameda de OsunaEmpalme 20.005 (12.5) 1968–2006
M5 Istanbul Metro  Turkey ÜsküdarÇekmeköy 20.0 (12.5) 2017–2018
Line 9 Barcelona Metro  Spain Zona UniversitariaAeroport T1 20.0 (12.5) 2004–2016
North East MRT line Mass Rapid Transit (Singapore)  Singapore HarbourFrontPunggol 20.0 (12.43)[13] 2003–2011
Bucharest Metro Line M3 Bucharest Metro  Romania PrecizieiAnghel Saligny 20.0 (12.43) 1983–2008
Line 2 Tianjin Metro  China CaozhuangGuoshanlu 19.7 (12.2) 2012–2014
Paris Métro Line 9 Paris Métro  France Pont de SèvresMairie de Montreuil 19.6 (12.18) 1922–1937
Red, Yellow, Blue, and Green Lines Bay Area Rapid Transit, San Francisco  United States Balboa ParkWest Oakland 19.5 (12.12) 1973
Kol'tsevaya Line Moscow Metro  Russia Circle route 19.4 (12.2) 1950–1954
Munich U-Bahn U3 Munich U-Bahn  Germany MoosachFürstenried West 19.4 (12.05) 1972–2009
Line 4 Tianjin Metro  China Dongnanjiao – Xinxingcun 19.4 (12) 2021
Line 3 Tianjin Metro  China HuayuanTianshili 19.2 (11.9) 2012–2013
Maskoŭskaja line Minsk Metro  Belarus MalinawkaUruchcha 19.1 (11.9) 1984-2014
Midosuji Line Osaka Metro  Japan NakatsuNakamozu 19.1 (11.87) 1933–1987
Line 5 Barcelona Metro  Spain Vall d'Hebron – Cornella centre 19.0 (11.8) 1955-2010
Warsaw Metro M2 Warsaw Metro  Poland BemowoBródno 18.9 km (11.7 mi) 2015-2022
Mexico City Metro Line 3 Mexico City Metro  Mexico La RazaUniversidad 18.7 (11.62) 1970–1983
Paris Métro Line 7 Paris Métro  France La Courneuve – 8 Mai 1945Villejuif – Louis Aragon 18.3 (11.6) 1910–1987
Red Line Baku Metro  Azerbaijan Icheri SheherHazi Aslanov 18.6 (11.6) 1967–2002
Line 3 Barcelona Metro  Spain Zona UniversitàriaTrinitat Nova 18.4 (11.44) 1925-2008
Line 1 Shanghai Metro  China Shanghai South RailwayShanghai Circus World 18.1 (11.25) 1993–2004
Avtozavodskaya Line Minsk Metro  Belarus Kamennaya GorkaMogilevskaya 18.1 (11.25) 1990–2005
U8 Berlin U-Bahn  Germany WittenauHermannstraße 18.1 (11.25) 1927–1996
Line B Prague Metro  Czechia Rajská zahradaHůrka 18.0 (11.2) 1998
Line 2 (Athens Metro)[10] Athens Metro  Greece AnthoupoliElliniko 17.9 (11.12) 2013
Line 5 Beijing Subway  China Huixin Xijie BeikouSongjiazhuang 17.8 (11.1) 2007
Washington, DC Metro Red Line Washington Metro  United States Union StationMedical Center 17.8 (11.05) 1984
Line 15 Beijing Subway  China Qinghua Donglu XikouMaquanying 17.6 (10.9) 2014
Tozai Line Kyoto Municipal Subway  Japan Uzumasa Tenjingawa-Yamashina-Rokujizo 17.5 (10.92) 2008
Line 4 Barcelona Metro  Spain Trinitat NovaLa Pau 17.3 (10.76) 1908-1999
Kholodnohirsko–Zavodska line Kharkiv Metro  Ukraine Kholodna HoraIndustrialna 17.3 (10.7) 1975-1978
Milan Metro M3 Milan Metro  Italy ComasinaSan Donato 17.105 (10.62) 1990–2011
Bucharest Metro Line M2 Bucharest Metro  Romania PiperaBerceni 17.1 (10.62) 1986–1987
Tōzai Line Tokyo Metro  Japan NakanoMinami-Sunamachi 17.0 (10.56) 1969
Tokyo Metro Hanzomon Line Tokyo Metro  Japan Shibuya-Oshiage 16.8 (10.4) 1978-2003
Mexico City Metro Line 1 Mexico City Metro  Mexico ObservatorioMetro Pantitlán 16.7 (10.38) 1984
Blue Line Chennai Metro  India Saidapet - Tondiarpet 16.6 (10.32) 2018-2021
M2 Istanbul Metro  Turkey YenikapıHacıosman 16.5 (10.3) 2000-2014
Line 9 Beijing Subway  China National LibraryGuogongzhuang 16.5 (10.3) 2012
Line 17 Beijing Subway  China ShiliheJiahuihu 16.5 (10.3) 2021
L-3 Madrid Metro  Spain Villaverde AltoMoncloa 16.42 (10.2) 2007
Line 1 Chongqing Rail Transit  China Chaotianmen – Shapingba 16.4 (10.2) 2011
Line A Prague Metro  Czechia Nemocnice MotolDepo Hostivař
Line is 17.1 km long, but only 16.4 km of it is underground.
16.4 (10.2) 2015
Kalininskaya line Moscow Metro  Russia TretyakovskayaNovokosino 16.3 (10.1) 1979-2012
L-4 Madrid Metro  Spain ArgüellesPinar de Chamartín 16.0 (9.9) 2007
Sviatoshynsko–Brovarska line Kyiv Metro  Ukraine AkademmistechkoDnipro 16.0 (9.9) 1955-2003
Seoul Subway Line 7
(shorter section)
Seoul Metropolitan Rapid Transit Corporation  South Korea SuraksanKonkuk University 16.0 (9.9) 1996
U6 Berlin U-Bahn  Germany Alt-MariendorfKurt-Schumacher-Platz 15.9 (9.86) 1923-1966
M3 Line Copenhagen Metro  Denmark Circle route 15.5 km (9.6 mi) 2019
Line 3[14] Budapest Metro Hungary Hungary Határ útÚjpest-központ
Line is 17.39 km long, but only 15.5 km of it is underground.
15.5 km (9.6 mi) 1990
Line 1 Tianjin Metro  China QinjiandaoTucheng 15.37 (9.55) 2006
Line 6 Santiago Metro  Chile CerrillosLos Leones 15.3 (9.5) 2017
Paris Métro Line 12 Paris Métro  France Front PopulaireMairie d'Issy 15.3 (9.5) 1910–2012
Syretsko–Pecherska line Kyiv Metro  Ukraine SyretsPivdennyi Bridge 15.2 (9.4) 1992-2004
Line 1 (Kolkata Metro) Kolkata Metro  India Mahanayak Uttam Kumar -Dum Dum 15.17 (9.38) 1984-1995
Line 10 Chengdu Metro  China TaipingyuanShuangliu West Station 15.0 (9.32) 2019
Island line MTR Hong Kong Hong Kong Kennedy Town[15]Heng Fa Chuen 15.0 (9.32) 1985 (as  Hong Kong)-2014

World's longest subway tunnel sections under construction

Name System Country Stations Length Expected completion
Ligne 15 Paris Métro  France (Circle route, all underground) 75 km (47 mi) 2025–2030
M11 Istanbul Metro  Turkey (Phase 2, Kargo Terminali - Halkalı section is 31.5 km in length and is currently under construction, all underground) 69 km (43 mi) Phase 2: 2024
Cross Island line Mass Rapid Transit (Singapore)  Singapore (Linear route with branch section, all underground)
(Excludes potential extension from Punggol to Seletar Airport under planning)
65.5 km (40.7 mi)
2030-2032
Line 13 Guangzhou Metro  China Whole lines is underground
(includes Phase II: Chaoyang – Zhucun is 33.6 km and under construction)
62.1 km (38.6 mi) Phase 1:2017
Phase 2:2023
Thomson–East Coast line Mass Rapid Transit (Singapore)  Singapore Woodlands North to Sungei Bedok
(Extension to Tanah Merah expected beyond 2030)
56.4 km (35.0 mi) 2020-2024
Line 17 Chengdu Metro  China Whole line 50.945 km and 4.442 km are not underground in Phase 1 and 2 46.5 km (28.9 mi) 2020 for Phase 1 underground section (21.71 km) / 2024 for Phase 2 (24.8 km)
Line 13 Shenzhen Metro  China Whole line is underground 45.72 km (28.41 mi) Phase 1:2022
North extension (Phase 2):2024
South extension:2025
L9 / L10 Barcelona Metro  Spain 43.7 km (27.2 mi)
(incl. branches)
2009 and 2016 partially;
central section unknown
Line 11 Guangzhou Metro  China (Circle route, all underground) 43.2 km (26.8 mi) 2023
Line 19 Chengdu Metro  China (Whole phase 2 is 42.87 km and all is underground) 42.87 km (26.64 mi) 2023
Athens Metro Line 4 Athens Metro Greece 38.2 km (23.7 mi)[16] 2029 for Phase 1[17]
Metro Manila Subway Manila Metro Rail Transit System  Philippines Mindanao AvenueNinoy Aquino International Airport (All underground) 36 km (22 mi) 2029
Mumbai Metro Line 3 Mumbai Metro  India Cuffe Parade-SEEPZ 33.02 km (20.52 mi) 2023
M3 İzmir Metro  Turkey Halkapınar – Menderes 32.6 km (20.3 mi) 2028
Line 13 (Chengdu Metro) Chengdu Metro  China Qiligou ~ Longhua Temple underground section 29.07 km (18.06 mi) 2024
Line 3 (Chennai Metro) Chennai Metro  India Madhavaram Milk Colony - Tharamani 27.086 km (16.830 mi) 2026-2027
D Line Extension Los Angeles Metro  United States Westwood/VA Hospital - Union Station 24.3 km (15.1 mi) 2025-2026
Line 30 Chengdu Metro  China (Phase 1 is 26.28 km) 26.28 km (16.33 mi) 2024
Suburban Rail Loop Melbourne rail network  Australia SRL East and North is underground (Cheltenham to Airport) 26 km (16 mi) SRL East: 2035[18]
Metro West Sydney Metro  Australia 24 km (15 mi) 2030
Blue Line Stockholm Metro  Sweden The extension to Nacka will be around 8 km, all underground, total 22 km including older sections. 22 km (14 mi) 2030
Line 27 Chengdu Metro  China Whole line is 24.86 km, but only 17.34 km underground 17.34 km (10.77 mi) 2024

See also

References

  1. "独家探访|关于西部最长地铁6号线,你想知道的一切都在这里". 9 September 2020. 成都地铁6号线全长68.76千米,共设有56座车站
  2. 1 2 "广州地铁18号线陇枕停车场首次迎接"活力橙"". 金羊网. 20 February 2021. Archived from the original on 10 April 2021. Retrieved 10 April 2021. 广州市2021年十件民生实事显示,2021年广州将力争开通试运营地铁18号线先通段(万顷沙-冼村,58.3公里)、22号线先通段(番禺广场-陈头岗,18.2公里)
  3. https://1520today.ru/blog/ne-70-km-a-57-5-kak-moskovskie-vlasti-udlinili-bolshuju-kolcevuju-liniju-metro
  4. https://postimg.cc/bsQtrNg0
  5. First stretch opens in 1969 as part of line 2
  6. "Downtown Line 3 officially opens; Khaw Boon Wan announces review of fares incurred when switching between stations". The Straits Times. 20 October 2017. Retrieved 13 June 2019.
  7. "Factsheet on Circle Line Extension". www.lta.gov.sg. 28 November 2011. Retrieved 13 June 2019.
  8. "World's longest railway tunnel" 1984–1988
  9. Note that both lines are served continuously by the A train within a single tunnel.
  10. 1 2 "Urban Rail Transport SA :METRO Line 1". Retrieved 30 September 2014.
  11. "Metro to bridge Delhi-Gurgaon divide today". The Hindu. Chennai, India. 3 September 2010. Retrieved 19 October 2010.
  12. Rajesh Ahuja (29 August 2010). "Gurgaon Metro set for operationalisation next week". Retrieved 19 October 2010.
  13. "North East Line". www.lta.gov.sg. Retrieved 13 June 2019.
  14. "3-as metróvonal jellemzői". Metros.hu (in Hungarian). Retrieved 27 March 2016.
  15. Including 0.4 miles/0.65 km of overrun tunnel to the west of Kennedy Town station. - Gammon. "MTR West Island Line - Sai Ying Pun; Hong Kong University and Kennedy Town Stations - Project details". - CIHT Hong Kong Branch. "West Island Line, Contact 705, KET Station & Overrun Tunnel" (PDF).
  16. https://web.archive.org/web/20220921225632/https://www.ametro.gr/wp-content/uploads/2022/05/%CE%91%CE%A5%CE%A4%CE%9F%CE%A8%CE%99%CE%91.pdf
  17. "Μετρό-Γραμμή 4: Ξεκινούν τα έργα - Οι 15 σταθμοί από Γαλάτσι έως Γουδί - Έτοιμο σε 8 χρόνια". www.naftemporiki.gr (in Greek). 22 June 2021. Retrieved 20 May 2022.
  18. https://www.premier.vic.gov.au/works-start-today-victorias-suburban-rail-loop
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