 | This article needs additional citations for verification .(June 2016) |
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.
| Name | System | Country | Stations | Length | Expected completion |
|---|---|---|---|---|---|
| Line 15 | Paris Métro |  France | Noisy–Champs - Champigny Centre Circle route, all underground | 75 km (47 mi) | Southern section: 2025 Full line: 2031 |
| 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) | 59.2 km (36.8 mi) | Phase 1：2017 Phase 2：2024 and later |
| L9 / L10 | Barcelona Metro |  Spain | 47.8 km (29.7 mi) (incl. branches) | 2009 and 2016 partially; central section: 2028-2029 | |
| Line 13 | Shenzhen Metro | China | Whole line is underground | 45.72 km (28.41 mi) | Phase 1：2024 Phase 2 (North extension)：2025 South extension：2026 |
| Thomson–East Coast line | Mass Rapid Transit (Singapore) | Singapore | Woodlands North to Sungei Bedok (Phases 4 and 5, Gardens by the Bay – Sungei Bedok are 13 km in length and are currently under construction, all underground) | 43.4 km (27.0 mi) | Phase 4：2024 Phase 5：2025 |
| Line 11 | Guangzhou Metro | China | Circle route, all underground | 43.2 km (26.8 mi) | 2024 |
| Troitskaya line | Moscow Metro |  Russia | Whole line is underground | 40.2 km (25.0 mi) | Phase 1：2024 (25 km (16 mi)) Phase 2：2028–2029 (15.2 km (9.4 mi)) |
| Athens Metro Line 4 | Athens Metro |  | 38.2 km (23.7 mi) [17] | 2029 for Phase 1 [18] | |
| Metro Manila Subway | Manila Metro Rail Transit System |  Philippines | Mindanao Avenue – Ninoy Aquino International Airport (All underground) | 36 km (22 mi) | 2029 |
| Line 3 | Mumbai Metro |  India | Cuffe Parade-SEEPZ | 33.02 km (20.52 mi) | 2024 for Phase 1 |
| Line 13 | Chengdu Metro | China | Qiligou – Longhua Temple underground section | 29.07 km (18.06 mi) | 2024 |
| Line 16 | Paris Métro | France | Saint-Denis–Pleyel - Noisy–Champs All underground | 27.5 km (17.1 mi) | Phase 1: 2026 Phase 2: 2028 |
| Line 3 | 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) | 2035 [19] (Eastern stretch) |
| Metro West | Sydney Metro | Australia | 24 km (15 mi) | 2032 [20] | |
| Metro Western Sydney Airport | Sydney Metro | Australia | 23 km (14 mi) | 2026 | |
| Line C | Toulouse Metro | France | Underground from Colomiers Gare tp Montaudran Gare, full line will be 27 km long. [21] | 22 km (14 mi) | 2028 |
| 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 |
The Guangzhou Metro (广州地铁) is the rapid transit system of the city of Guangzhou in the Guangdong Province of China. It is operated by the state-owned Guangzhou Metro Corporation and was the fourth metro system to be built in mainland China, after those of Beijing, Tianjin, and Shanghai.
The Hangzhou Metro is a rapid transit system that serves Hangzhou in Zhejiang province, China. The system opened on November 24, 2012. It is the 17th city in China to operate a rapid transit system.
The Chengdu Metro is the rapid transit system of Chengdu, the capital of Sichuan, China. With the opening of Line 1 on 27 September 2010, the system had thirteen subway lines and one light rail line. It has subsequently undergone rapid expansion. Since the opening of Lines 6, 8, 9, and 17 on 18 December 2020, the Chengdu Metro is the 4th longest metro system in the world.
Urban rail transit in China encompasses a broad range of urban and suburban electric passenger rail mass transit systems including subway, light rail, tram and maglev. Some classifications also include non-rail bus rapid transport.
The Guangfo line or Guangfo Metro is a intercity metro line that connects the cities cities of Foshan and Guangzhou, both in Guangdong province. As of December 2018, the line is currently 39.6 km (24.61 mi) long and has 25 stations, which are all underground.
Line 3 of the Guangzhou Metro is a 74.83-kilometer (46.50 mi) rapid transit line connects Haibang to Airport North. The entire line, including all track and stations, is located in tunnels. Its 67.33 km (41.84 mi) main branch, excluding the 7.5 km (4.66 mi) branch between Tianhe Coach Terminal and Tiyu Xilu, is now the third longest continuous subway tunnel in the world, and the longest rail tunnel of any kind.
Line 8 of the Guangzhou Metro is a north-west L-shaped line on the system that runs from Jiaoxin to Wanshengwei, spanning a total of 33.9 km (21.06 mi) with 28 stations. It interchanges with Line 1 at Chen Clan Academy, Line 2 at Changgang, Line 3 at Kecun, Line 4 at Wanshengwei, Line 6 at Cultural Park, and Line 18 at Modiesha. All stations on Line 8 are underground. Line 8's color is teal.
Line 21 of the Guangzhou Metro is a rapid transit rail line in Guangzhou.
Line 1 of the Hangzhou Metro is an arc-shaped rapid transit line running from Xianghu station in western Xiaoshan District to Xiaoshan International Airport in eastern Xiaoshan District, passing through downtown Hangzhou. The line opened on 24 November 2012. It is the oldest in the city's metro network.
Line 6 of the Chengdu Metro is a rapid transit line in Chengdu. It starts at Wangcong Temple and ends at Lanjiagou. The total length is 68.223 km (42.4 mi) with 56 stations.
Line 19 of the Hangzhou Metro is a rapid transit line in Hangzhou. The line was opened on 22 September 2022.
Line 18 of the Guangzhou Metro is a rapid transit express line in Guangzhou with trains operating up to 160 km/h (99 mph). It runs in a south-north direction, connecting Wanqingsha in Nansha District, Panyu Square in Panyu District, Modiesha in Haizhu District, Zhujiang New Town and Guangzhou East Railway Station in Tianhe District. The line commenced service on 28 September 2021.
Line 22 of the Guangzhou Metro is a partially open rapid transit express line in Guangzhou with trains operating up to 160 km/h (99 mph). It runs between Panyu Square and Chentougang, passing Guangzhou South Railway Station in Panyu District, and will eventually run in a north-south direction passing Xilang and Fangcun in Liwan District. Currently, there are train attendants on board each train. In the future, trains will operate fully driverless GoA4 mode when sufficient reliability from the signaling system has been confirmed.
Line 17 of the Chengdu Metro is a metro line in Chengdu. The whole line will be 30.286 km when Phase 2 opens. The line uses 8-car Type-A trains operating up to 140 km/h speed powered by 25kV AC overhead lines.
Wanqingsha Station is a station on Line 18 of the Guangzhou Metro, located underneath Nansha railway station in Guangzhou's Nansha District. It opened on 28 September 2021, and is the current southern terminus of the line.
Xiancun Station is a station on Line 18 of the Guangzhou Metro, located underground at the fork of Huangpu Avenue West, Tiyu East Road and Xiancun Road in Guangzhou's Tianhe District. It opened on 28 September 2021, and is the current northern terminus of the line.
Longtan Station is a station on Line 18 of the Guangzhou Metro, located underground between Xinjiao Middle Road and Taichong in Guangzhou's Haizhu District. It opened on 28 September 2021.
Shaxi Station is a station on Line 18 of the Guangzhou Metro, located underground northwest of the intersection of Panyu Bridge and Shaxi Avenue on Shajiao Island in Guangzhou's Panyu District. It opened on 28 September 2021.
Hengli Station is a station on Line 18 of the Guangzhou Metro, located underground at the west side of Fenghuang Dadao on Hengli Island in Guangzhou's Nansha District. It opened on 28 September 2021.
成都地铁6号线全长68.76千米，共设有56座车站
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）
Les cinq tunneliers de la ligne C creuseront 22 km en souterrain
