List of longest subway tunnel sections
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) | 2022–2030 |
| Bolshaya Koltsevaya line | Moscow Metro |  Russia |
(Circle route, all underground) | 69 km (43 mi)[14] | 2018 partially; other sections up to 2023 |
| Line 18 | Chengdu Metro |  China |
Whole line is 77.123 km | 66.16 km (41.11 mi) | 2020 |
| 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) |
2029-2031 |
| Line 18 | Guangzhou Metro | China |
Guangzhou East railway station to Wanqingsha | 65.3 km (40.6 mi) | 2020 |
| Line 13 | Guangzhou Metro | China |
Whole lines is underground (includes Phase II: Chaoyang – Zhucun is 33.6km 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 81.48 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 (21.71km) / 2024 for Phase 2 (24.8km) |
| 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) |
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) | 2022 |
| Line 8 | Chengdu Metro | China |
(Phase 1 is 28.8km, phase 2 is 7.94km) | 36.74 km (22.83 mi) | 2020 |
| Mumbai Metro Line 3 | Mumbai Metro |  India |
Cuffe Parade-SEEPZ | 33.02 km (20.52 mi) | 2021 |
| Chengdu Metro Line 13 | Chengdu Metro | China |
Qiligou ~ Longhua Temple underground section | 29.07 km (18.06 mi) | 2024 |
| Purple 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 |
| Line 27 | Chengdu Metro | China |
Whole line is 24.86km, but only 17.34km underground | 17.34 km (10.77 mi) | 2024 |
See also
References
- "Chengdu Metro Line 6 had a playful moment! For real/成都地铁6号线这回"皮"了一把！真的，不豁你" (in Chinese). 搜狐网. 28 July 2018.
- "Stunning first train is revealed for Chengdu Metro line 6/成都地铁6号线首列车辆惊艳亮相！" (in Chinese). 成都高新检察. 30 July 2018.
- "Chengdu builds the longest subway in West China_line 6 is 73km/成都新建西部地区最长地铁_地铁6号线全长73km" (in Chinese). 成都地铁吧. 15 May 2020.
- "Updates on Chengdu Metro's 5 new lines this year/快马加鞭！成都地铁今年开通的5条新线运营筹备进展请阅" (in Chinese). 四川在线 （编辑：彭焘）. 20 April 2020.
- "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.
- "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.
- "Urban Rail Transport SA :METRO Line 1". Retrieved 30 September 2014.
- "3-as metróvonal jellemzői". Metros.hu (in Hungarian). Retrieved 27 March 2016.
- https://stroi.mos.ru/metro/tretii-peresadochnyi-kontur
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