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
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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 |  |
38.2 km (23.7 mi)[16] | 2029 for Phase 1[17] | |
| Metro Manila Subway | Manila Metro Rail Transit System |  Philippines |
Mindanao Avenue – Ninoy 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 | .svg.png.webp){kind=small} 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
- ↑ "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
- 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）
- ↑ https://1520today.ru/blog/ne-70-km-a-57-5-kak-moskovskie-vlasti-udlinili-bolshuju-kolcevuju-liniju-metro
- ↑ https://postimg.cc/bsQtrNg0
- ↑ First stretch opens in 1969 as part of line 2
- ↑ "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.
- ↑ "Factsheet on Circle Line Extension". www.lta.gov.sg. 28 November 2011. Retrieved 13 June 2019.
- ↑ "World's longest railway tunnel" 1984–1988
- ↑ Note that both lines are served continuously by the A train within a single tunnel.
- 1 2 "Urban Rail Transport SA :METRO Line 1". Retrieved 30 September 2014.
- ↑ "Metro to bridge Delhi-Gurgaon divide today". The Hindu. Chennai, India. 3 September 2010. Retrieved 19 October 2010.
- ↑ Rajesh Ahuja (29 August 2010). "Gurgaon Metro set for operationalisation next week". Retrieved 19 October 2010.
- ↑ "North East Line". www.lta.gov.sg. Retrieved 13 June 2019.
- ↑ "3-as metróvonal jellemzői". Metros.hu (in Hungarian). Retrieved 27 March 2016.
- ↑ 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).
- ↑ 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
- ↑ "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.
- ↑ https://www.premier.vic.gov.au/works-start-today-victorias-suburban-rail-loop
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