# Rapid transit track gauge

Track gauge :
By transport mode :
Rapid transit
Tram
Miniature
Scale model :
By size (list) :
Change of gauge :
Bogie exchange
Break of gauge
Dual gauge
Conversion
list
Variable gauge :
By location :
North America
South America
Europe
Australia :
The vast majority of rapid transit systems use 1,435 mm (4 ft 8+1⁄2 in) standard gauge. Some of the largest and oldest subway systems in the world use standard gauge in agreement with the country-wide dominant usage for track gauge, e.g. London Underground (1863), Chicago "L" (1892), Vienna Metro (1898), Paris Métro (1900), Berlin U-Bahn (1902), New York City Subway (1904), Stockholm Metro (1950), Milan Metro (1964), Mexico City Metro (1969), Beijing Subway (1971), Seoul Metropolitan Subway (1974), Shanghai Metro (1993), Guangzhou Metro (1997), Shenzhen Metro (2004). Many rapid transit systems in countries where the main lines do not use standard gauges are built in standard gauge, including the Barcelona Metro, Santiago Metro, Taipei Metro, and many systems in India.
There are also systems that use 1,067 mm (3 ft 6 in) (some systems in Japan and Jakarta MRT), 1,524 mm (5 ft) (the standard in former Soviet Union), 1,600 mm (5 ft 3 in) (the standard in Brazil) and few others.
Some systems use rubber tires, with some ones adding them to the normal steel wheels (e.g. Paris Metro, Mexico City Metro, Montreal Metro) and some others with only tires (e.g. Lille Metro, Sapporo Municipal Subway).
Some systems use monorail, the largest ones are in Chongqing Rail Transit and in São Paulo Metro.
For gauges used by systems that do not run in exclusive rights of way (trams, streetcars and light rail) see List of tram systems by gauge and electrification.
For references for the figures, see each system's page and List of metro systems.
| Country | Network | Route length | Gauge | Comment |
| Algeria | Algiers Metro | 18.5 km (11.5 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Argentina | Buenos Aires Underground | 56.7 km (35.2 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Armenia | Yerevan Metro | 13.4 km (8.3 mi) | 1,524 mm (5 ft) | |
| Australia | Sydney Metro | 36 km (22 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Austria | Vienna U-Bahn | 83.3 km (51.8 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Azerbaijan | Baku Metro | 40.7 km (25.3 mi) | 1,524 mm (5 ft) | |
| Bangladesh | Dhaka Metro Rail | 20.1 km (12.5 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Belarus | Minsk Metro | 40.8 km (25.4 mi) | 1,524 mm (5 ft) | |
| Belgium | Brussels Metro | 39.9 km (24.8 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Brazil | Belo Horizonte Metro | 28.1 km (17.5 mi) | 1,600 mm (5 ft 3 in) | |
| Brazil | Federal District Metro | 42.4 km (26.3 mi) | 1,600 mm (5 ft 3 in) | |
| Brazil | Porto Alegre Metro | 43.8 km (27.2 mi) | 1,600 mm (5 ft 3 in) | |
| Brazil | Recife Metro | 39.5 km (24.5 mi) | 1,600 mm (5 ft 3 in) | Includes rapid transit lines only: Linha Centro (Center Line) and Linha Sul (South Line) |
| Brazil | Rio de Janeiro Metro | 58 km (36 mi) | 1,600 mm (5 ft 3 in) | |
| Brazil | Salvador Metro | 34 km (21 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Brazil | Fortaleza Metro | 43.6 km (27.1 mi) | 1,000 mm (3 ft 3+3⁄8 in) | |
| Brazil | São Paulo Metro | 56.9 km (35.4 mi) | 1,600 mm (5 ft 3 in) | Line 1, Line 2 and Line 3 |
| Brazil | São Paulo Metro | 31.4 km (19.5 mi) | 1,435 mm (4 ft 8+1⁄2 in) | Line 4 and Line 5 |
| Brazil | São Paulo Metro | 14.6 km (9.1 mi) | Monorail | Line 15 |
| Bulgaria | Sofia Metro | 52 km (32 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Canada | Montreal Metro | 69.2 km (43.0 mi) | 1,435 mm (4 ft 8+1⁄2 in) between guide bars and rubber tires | Michelin rubber-tyred metro system has both rubber tires and steel wheels |
| Canada | REM Montreal | 16.6 km (10.3 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Canada | Toronto subway | 70.5 km (43.8 mi) | 4 ft 10+7⁄8 in (1,495 mm) | Line 1, Line 2 and Line 4 |
| Canada | Toronto subway | 6.4 km (4.0 mi) | 1,435 mm (4 ft 8+1⁄2 in) | Line 3 |
| Canada | SkyTrain | 79.6 km (49.5 mi) | 1,435 mm (4 ft 8+1⁄2 in) | Expo Line (SkyTrain), Millennium Line, and Canada Line |
| Chile | Santiago Metro | 73.5 km (45.7 mi) | 1,435 mm (4 ft 8+1⁄2 in) | Line 3, Line 4, Line 4A and Line 6 |
| Chile | Santiago Metro | 76 km (47 mi) | 1,435 mm (4 ft 8+1⁄2 in) and rubber tires | Line 1, Line 2 and Line 5. Michelin rubber-tyred metro system has both rubber tires and steel wheels |
| China | Beijing Subway | 804 km (500 mi) | 1,435 mm (4 ft 8+1⁄2 in) | All lines except S1 line (Maglev), Yizhuang T1 line and Xijiao line (light rail) |
| China | Beijing Subway | 9.1 km (5.7 mi) | Maglev | S1 line |
| China | Changchun Rail Transit | 71.6 km (44.5 mi) | 1,435 mm (4 ft 8+1⁄2 in) | Line 1, Line 2 and Line 6 |
| China | Changsha Metro | 217.8 km (135.3 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Changzhou Metro | 54.03 km (33.57 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Chengdu Metro | 558.11 km (346.79 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Chongqing Rail Transit | 420.22 km (261.11 mi) | 1,435 mm (4 ft 8+1⁄2 in) | Loop line, Line 1, Line 4, Line 5, Line 6, Line 9, Line 10 and Jiangtiao line |
| China | Chongqing Rail Transit | 98.5 km (61.2 mi) | Monorail | Line 2 and Line 3 |
| China | Dalian Metro | 237.7 km (147.7 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Dongguan Rail Transit | 37.8 km (23.5 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Foshan Metro | 134.9 km (83.8 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Fuzhou Metro | 143.5 km (89.2 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Guangzhou Metro | 651.75 km (404.98 mi) | 1,435 mm (4 ft 8+1⁄2 in) | All lines except Zhujiang New Town APM |
| China | Guangzhou Metro | 3.9 km (2.4 mi) | rubber tires | Zhujiang New Town APM |
| China | Guiyang Metro | 118.7 km (73.8 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Hangzhou Metro | 516 km (321 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Harbin Metro | 83.78 km (52.06 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Hefei Metro | 201.95 km (125.49 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Hohhot Metro | 49 km (30 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Jinan Metro | 84.3 km (52.4 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Jinhua Rail Transit | 107 km (66 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Kunming Rail Transit | 164.3 km (102.1 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Lanzhou Metro | 34.96 km (21.72 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Luoyang Subway | 43.6 km (27.1 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Nanchang Metro | 128.6 km (79.9 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Nanjing Metro | 521 km (324 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Nanning Rail Transit | 127.9 km (79.5 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Nantong Rail Transit | 60 km (37 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Ningbo Rail Transit | 193.9 km (120.5 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Qingdao Metro | 342.4 km (212.8 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Shanghai Metro | 795.2 km (494.1 mi) | 1,435 mm (4 ft 8+1⁄2 in) | All lines except Pujiang line. This figure excludes Maglev line and Jinshan Railway, both often included in Shanghai Metro maps but not considered part of the system. |
| China | Shanghai Metro | 6.7 km (4.2 mi) | rubber tires | Pujiang line |
| China | Shaoxing Metro | 57.8 km (35.9 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Shenyang Metro | 163.7 km (101.7 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Shenzhen Metro | 555.43 km (345.13 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Shijiazhuang Metro | 76.5 km (47.5 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Suzhou Rail Transit | 321.1 km (199.5 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Taiyuan Metro | 23.65 km (14.70 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Taizhou Rail Transit | 52.4 km (32.6 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Tianjin Metro | 314.2 km (195.2 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Ürümqi Metro | 27.6 km (17.1 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Wenzhou Metro | 116.4 km (72.3 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Wuhan Metro | 494.76 km (307.43 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Wuhu Rail Transit | 46.25 km (28.74 mi) | Monorail | |
| China | Wuxi Metro | 114.8 km (71.3 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Xiamen Metro | 98.4 km (61.1 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Xi'an Metro | 370.2 km (230.0 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Xuzhou Metro | 64.35 km (39.99 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| China | Zhengzhou Metro | 344.2 km (213.9 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Hong Kong | Mass Transit Railway | 102.1 km (63.4 mi) | 1,435 mm (4 ft 8+1⁄2 in) | East Rail line, Tuen Ma line and South Island line |
| Hong Kong | Mass Transit Railway | 79.4 km (49.3 mi) | 1,432 mm (4 ft 8+3⁄8 in) | Kwun Tong line, Tsuen Wan line, Island line, Tung Chung line, Airport Express, Tseung Kwan O line, Disneyland Resort line |
| Macau | Macau Light Rapid Transit | 16.3 km (10.1 mi) | rubber tires | |
| Colombia | Medellín Metro | 31.3 km (19.4 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Czech Republic | Prague Metro | 65.2 km (40.5 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Denmark | Copenhagen Metro | 43.3 km (26.9 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Dominican Republic | Santo Domingo Metro | 28.4 km (17.6 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Ecuador | Quito Metro | 22 km (14 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Egypt | Cairo Metro | 107.1 km (66.5 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Egypt | Cairo Light Rail Transit | 70 km (43 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Finland | Helsinki Metro | 43 km (27 mi) | 1,522 mm (4 ft 11+29⁄32 in) | |
| France | Lille Metro | 45 km (28 mi) | rubber tires | VAL technology |
| France | Lyon Metro | 2.5 km (1.6 mi) | 1,435 mm (4 ft 8+1⁄2 in) | Line C rack railway |
| France | Lyon Metro | 31.9 km (19.8 mi) | 1,435 mm (4 ft 8+1⁄2 in) and rubber tires | Line A, Line B and Line D. Michelin rubber-tyred metro system has both rubber tires and steel wheels |
| France | Marseille Metro | 21.9 km (13.6 mi) | 1,435 mm (4 ft 8+1⁄2 in) and rubber tires | Michelin rubber-tyred metro system has both rubber tires and steel wheels |
| France | Paris Métro | 158.8 km (98.7 mi) | 1,435 mm (4 ft 8+1⁄2 in) | Line 2, Line 3, Line 5, Line 7, Line 8, Line 9, Line 10, Line 12 and Line 13 |
| France | Paris Métro | 83.7 km (52.0 mi) | 1,435 mm (4 ft 8+1⁄2 in) and rubber tires | Line 1, Line 4, Line 6, Line 11 and Line 14. Michelin rubber-tyred metro system has both rubber tires and steel wheels |
| France | Rennes Metro | 23 km (14 mi) | rubber tires | VAL technology |
| France | Toulouse Metro | 28.2 km (17.5 mi) | rubber tires | VAL technology |
| Georgia | Tbilisi Metro | 27.1 km (16.8 mi) | 1,524 mm (5 ft) | |
| Germany | Berlin U-Bahn | 156.1 km (97.0 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Germany | Frankfurt U-Bahn | 64.9 km (40.3 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Germany | Hamburg U-Bahn | 106.1 km (65.9 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Germany | Hanover Stadtbahn | 121 km (75 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Germany | Munich U-Bahn | 95 km (59 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Germany | Nuremberg U-Bahn | 38.2 km (23.7 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Greece | Athens Metro | 91.7 km (57.0 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Greece | Thessaloniki Metro | 9.6 km (6.0 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Hungary | Budapest Metro | 38.2 km (23.7 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| India | Ahmedabad Metro | 38.63 km (24.00 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| India | Bengalaru Metro | 73.75 km (45.83 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| India | Chennai Metro | 54.15 km (33.65 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| India | Delhi Metro | 148.2 km (92.1 mi) | 1,676 mm (5 ft 6 in) | Red Line, Yellow Line and Blue Line (1-4 lines) |
| India | Delhi Metro | 199.9 km (124.2 mi) | 1,435 mm (4 ft 8+1⁄2 in) | Green Line, Violet Line, Magenta Line, Pink Line, Grey Line (5-9 lines) and Airport Metro Express |
| India | Rapid Metro Gurgaon | 11.7 km (7.3 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| India | Hyderabad Metro | 67 km (42 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| India | Jaipur Metro | 12.1 km (7.5 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| India | Kanpur Metro | 9 km (5.6 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| India | Kochi Metro | 27.4 km (17.0 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| India | Kolkata Metro | 37.86 km (23.53 mi) | 1,676 mm (5 ft 6 in) | Blue Line, Purple Line and Orange Line |
| India | Kolkata Metro | 9.1 km (5.7 mi) | 1,435 mm (4 ft 8+1⁄2 in) | Green Line |
| India | Lucknow Metro | 23 km (14 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| India | Mumbai Metro | 58.8 km (36.5 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| India | Nagpur Metro | 38.21 km (23.74 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| India | Navi Mumbai Metro | 11.1 km (6.9 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| India | Noida Metro | 29.7 km (18.5 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| India | Pune Metro | 33.2 km (20.6 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Indonesia | Jakarta MRT | 15.7 km (9.8 mi) | 1,067 mm (3 ft 6 in) | |
| Indonesia | Jakarta LRT | 5.8 km (3.6 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Indonesia | Jabodebek LRT | 44.5 km (27.7 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Indonesia | Palembang LRT | 23.4 km (14.5 mi) | 1,067 mm (3 ft 6 in) | |
| Iran | Isfahan Metro | 16.2 km (10.1 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Iran | Karaj metro | 49.5 km (30.8 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Iran | Mashhad Urban Railway | 37.5 km (23.3 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Iran | Shiraz Metro | 32.5 km (20.2 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Iran | Tabriz Metro | 7 km (4.3 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Iran | Tehran Metro | 224.6 km (139.6 mi) | 1,435 mm (4 ft 8+1⁄2 in) | All lines except Line 5 |
| Italy | Brescia Metro | 13.7 km (8.5 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Italy | Catania Metro | 10.5 km (6.5 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Italy | Genoa Metro | 7.1 km (4.4 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Italy | Milan Metro | 111.8 km (69.5 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Italy | Naples Metro | 34.5 km (21.4 mi) | 1,435 mm (4 ft 8+1⁄2 in) | Line 1, Line 6, Line 11 |
| Italy | Rome Metro | 60 km (37 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Italy | Turin Metro | 15.1 km (9.4 mi) | rubber tires | VAL technology |
| Japan | Astram Line | 18.4 km (11.4 mi) | rubber tires | |
| Japan | Fukuoka City Subway | 17.8 km (11.1 mi) | 1,067 mm (3 ft 6 in) | Kūkō Line and Hakozaki Line |
| Japan | Fukuoka City Subway | 13.6 km (8.5 mi) | 1,435 mm (4 ft 8+1⁄2 in) | Nanakuma Line |
| Japan | Kobe Municipal Subway | 38.1 km (23.7 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Japan | Kyoto Municipal Subway | 31.2 km (19.4 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Japan | Nagoya Municipal Subway | 53.3 km (33.1 mi) | 1,435 mm (4 ft 8+1⁄2 in) | Higashiyama Line, Meijō Line and Meikō Line |
| Japan | Nagoya Municipal Subway | 40 km (25 mi) | 1,067 mm (3 ft 6 in) | Tsurumai Line, Sakura-dōri Line and Kamiiida Line |
| Japan | Osaka Metro | 133.1 km (82.7 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Japan | Sapporo Municipal Subway | 48.0 km (29.8 mi) | rubber tires | |
| Japan | Sendai Subway | 14.8 km (9.2 mi) | 1,067 mm (3 ft 6 in) | Namboku Line |
| Japan | Sendai Subway | 13.9 km (8.6 mi) | 1,435 mm (4 ft 8+1⁄2 in) | Tōzai Line |
| Japan | Toei Subway (Tokyo) | 59 km (37 mi) | 1,435 mm (4 ft 8+1⁄2 in) | Asakusa Line and Ōedo Line |
| Japan | Toei Subway (Tokyo) | 26.5 km (16.5 mi) | 1,067 mm (3 ft 6 in) | Mita Line |
| Japan | Toei Subway (Tokyo) | 23.5 km (14.6 mi) | 4 ft 6 in (1,372 mm) | Shinjuku Line |
| Japan | Tokyo Metro | 41.7 km (25.9 mi) | 1,435 mm (4 ft 8+1⁄2 in) | Ginza Line and Marunouchi Line |
| Japan | Tokyo Metro | 153.4 km (95.3 mi) | 1,067 mm (3 ft 6 in) | All lines except Ginza Line and Marunouchi Line |
| Japan | Tokyo Monorail | 17.8 km (11.1 mi) | Monorail | |
| Japan | Rinkai Line (Tokyo) | 12.2 km (7.6 mi) | 1,067 mm (3 ft 6 in) | |
| Japan | Yokohama Municipal Subway | 53.4 km (33.2 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Japan | Minatomirai Line (Yokohama) | 4.1 km (2.5 mi) | 1,067 mm (3 ft 6 in) | |
| Kazakhstan | Almaty Metro | 13.4 km (8.3 mi) | 1,524 mm (5 ft) | |
| North Korea | Pyongyang Metro | 22.5 km (14.0 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| South Korea | Busan Metro | 103.8 km (64.5 mi) | 1,435 mm (4 ft 8+1⁄2 in) | Includes rapid transit lines only: lines 1-3 |
| South Korea | Busan Metro | 12.7 km (7.9 mi) | rubber tires | Line 4 |
| South Korea | Daegu Metro | 59.8 km (37.2 mi) | 1,435 mm (4 ft 8+1⁄2 in) | Line 1 and Line 2 (Daegyeong Line not included) |
| South Korea | Daegu Metro | 23.9 km (14.9 mi) | Monorail | Line 3 |
| South Korea | Daejeon Metro | 22.7 km (14.1 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| South Korea | Gimpo Goldline | 23.7 km (14.7 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| South Korea | Gwangju Metro | 20.1 km (12.5 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| South Korea | Incheon Subway | 59.4 km (36.9 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| South Korea | Seoul Subway | 367.5 km (228.4 mi) | 1,435 mm (4 ft 8+1⁄2 in) | Lines 1-9 |
| South Korea | Ui LRT | 11.4 km (7.1 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| South Korea | Sillim Line | 7.8 km (4.8 mi) | rubber tires | |
| South Korea | Korail metro lines | 133 km (83 mi) | 1,435 mm (4 ft 8+1⁄2 in) | Includes the Bundang Line, Korail portions of Seoul Subway Line 3 (Ilsan Line) and Seoul Subway Line 4 (Gwacheon Line and Ansan Line), and the Suin Line |
| South Korea | Shinbundang Line | 33.4 km (20.8 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| South Korea | Uijeongbu U Line | 11.2 km (7.0 mi) | rubber tires | VAL technology |
| Malaysia | Rapid KL | 219.8 km (136.6 mi) | 1,435 mm (4 ft 8+1⁄2 in) | All lines except KL Monorail |
| Malaysia | Rapid KL | 8.6 km (5.3 mi) | Monorail | KL Monorail |
| Mexico | Guadalajara Metro | 21 km (13 mi) | 1,435 mm (4 ft 8+1⁄2 in) | Line 3 |
| Mexico | Mexico City Metro | 165.7 km (103.0 mi) | 1,435 mm (4 ft 8+1⁄2 in) and rubber tires | All lines except Line 12 and Line A. Michelin rubber-tyred metro system has both rubber tires and steel wheels |
| Mexico | Mexico City Metro | 35.2 km (21.9 mi) | 1,435 mm (4 ft 8+1⁄2 in) | Line 12 and Line A |
| Mexico | Monterrey Metro | 40 km (25 mi) | 1,435 mm (4 ft 8+1⁄2 in) | For all 3 lines. The 5 train models (MM-90X, MM-93, MM-05, MM-20 and Duewag/Talbot MM-80) share the same rail gauge, and can be swapped to serve any of the 3 lines (they are all connected by 2 interchanges). |
| Netherlands | Amsterdam Metro | 44.3 km (27.5 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Netherlands | Rotterdam Metro | 103.1 km (64.1 mi) | 1,435 mm (4 ft 8+1⁄2 in) | Some sections of the Lines A and B have some level crossings (with priority) and so could therefore be considered "light rail" instead of "metro" |
| Nigeria | Abuja Light Rail | 44.7 km (27.8 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Nigeria | Lagos Rail Mass Transit | 27 km (17 mi) | 1,435 mm (4 ft 8+1⁄2 in) | Blue Line only (Red Line is a commuter rail) |
| Norway | Oslo Metro | 86 km (53 mi) | 1,435 mm (4 ft 8+1⁄2 in) | This system has similarities to light rail systems, because of existence of road level crossings, but is listed since there are almost entirely separated from roads |
| Pakistan | Lahore Metro | 27.1 km (16.8 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Panama | Panama Metro | 39.8 km (24.7 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Peru | Lima Metro | 39.6 km (24.6 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Philippines | Manila Light Rail Transit System | 43.5 km (27.0 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Philippines | Manila Metro Rail Transit System | 16.9 km (10.5 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Poland | Warsaw Metro | 41.3 km (25.7 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Portugal | Lisbon Metro | 44.2 km (27.5 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Qatar | Doha Metro | 76 km (47 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Romania | Bucharest Metro | 80.1 km (49.8 mi) | 1,432 mm (4 ft 8+3⁄8 in) | Gauge is nominally 1432, but the tolerances (+10, -3) are centered around Standard gauge |
| Russia | Kazan Metro | 16.8 km (10.4 mi) | 1,524 mm (5 ft) | |
| Russia | Moscow Metro | 471.7 km (293.1 mi) | 1,524 mm (5 ft) | All lines except Moscow Central Diameters, Moscow Central Circle (a conventional railway numbered as Line 14) and Moscow Monorail (Line 13) |
| Russia | Moscow Metro | 4.7 km (2.9 mi) | Monorail | Moscow Monorail (Line 13) |
| Russia | Nizhny Novgorod Metro | 21.6 km (13.4 mi) | 1,524 mm (5 ft) | |
| Russia | Novosibirsk Metro | 15.9 km (9.9 mi) | 1,524 mm (5 ft) | |
| Russia | Saint Petersburg Metro | 128.4 km (79.8 mi) | 1,524 mm (5 ft) | |
| Russia | Samara Metro | 11.6 km (7.2 mi) | 1,524 mm (5 ft) | |
| Russia | Yekaterinburg Metro | 12.7 km (7.9 mi) | 1,524 mm (5 ft) | |
| Saudi Arabia | Riyadh Metro | 176 km (109 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Saudi Arabia | Mecca Metro | 18.1 km (11.2 mi) | 1,435 mm (4 ft 8+1⁄2 in) | Al Mashaaer Al Mugaddassah Metro Southern Line (Line S) |
| Singapore | Light Rail Transit | 28.6 km (17.8 mi) | rubber tires | |
| Singapore | Mass Rapid Transit | 241.8 km (150.2 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Spain | Barcelona Metro | 20.7 km (12.9 mi) | 1,672 mm (5 ft 5+13⁄16 in) | Line 1 |
| Spain | Barcelona Metro | 119.2 km (74.1 mi) | 1,435 mm (4 ft 8+1⁄2 in) | All lines except Line 1 and Line 8 |
| Spain | Barcelona Metro | 11.3 km (7.0 mi) | 1,000 mm (3 ft 3+3⁄8 in) | Line 8 |
| Spain | Bilbao metro | 45.1 km (28.0 mi) | 1,000 mm (3 ft 3+3⁄8 in) | |
| Spain | Madrid Metro | 293 km (182 mi) | 1,445 mm (4 ft 8+7⁄8 in) | Including lines 1-12 and Ramal. Not including the three Light Rail lines |
| Sweden | Stockholm Metro | 105.7 km (65.7 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Switzerland | Lausanne Metro | 5.9 km (3.7 mi) | 1,435 mm (4 ft 8+1⁄2 in) and rubber tires | Only Line M2 (Michelin rubber-tyred metro system has both rubber tires and steel wheels). Line M1 is light rail |
| Taiwan | Kaohsiung Rapid Transit | 59.8 km (37.2 mi) | 1,435 mm (4 ft 8+1⁄2 in) | Red Line and Orange Line |
| Taiwan | Taipei Metro | 127.8 km (79.4 mi) | 1,435 mm (4 ft 8+1⁄2 in) | All lines except Wenhu line |
| Taiwan | Taipei Metro | 25.1 km (15.6 mi) | rubber tires | Wenhu line. VAL technology |
| Taiwan | Taichung Metro | 16.7 km (10.4 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Taiwan | Taoyuan Metro | 53.1 km (33.0 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Thailand | BTS Skytrain(Bangkok) | 68.2 km (42.4 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Thailand | MRT (Bangkok) | 70.6 km (43.9 mi) | 1,435 mm (4 ft 8+1⁄2 in) | Blue Line and Purple Line |
| Thailand | MRT (Bangkok) | 64.9 km (40.3 mi) | Monorail | Yellow Line and Pink Line |
| Turkey | Adana Metro | 13.5 km (8.4 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Turkey | Ankara Metro | 67.4 km (41.9 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Turkey | Bursaray | 39 km (24 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Turkey | Istanbul Metro | 243.3 km (151.2 mi) | 1,435 mm (4 ft 8+1⁄2 in) | M1-M11 lines |
| Turkey | İzmir Metro | 27 km (17 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Ukraine | Dnipro Metro | 7.1 km (4.4 mi) | 1,524 mm (5 ft) | |
| Ukraine | Kharkiv Metro | 38.1 km (23.7 mi) | 1,524 mm (5 ft) | |
| Ukraine | Kyiv Metro | 67.6 km (42.0 mi) | 1,524 mm (5 ft) | |
| United Arab Emirates | Dubai Metro | 89.6 km (55.7 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| United Kingdom | Glasgow Subway | 10.4 km (6.5 mi) | 4 ft (1,219 mm) | |
| United Kingdom | London Underground | 405.2 km (251.8 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| United Kingdom | Docklands Light Railway | 38 km (24 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| United Kingdom | Tyne and Wear Metro | 77.5 km (48.2 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| United States | MARTA (Atlanta) | 76.6 km (47.6 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| United States | Baltimore Metro Subway | 24.9 km (15.5 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| United States | MBTA subway (Boston) | 61 km (38 mi) | 1,435 mm (4 ft 8+1⁄2 in) | Red Line, Orange Line and Blue Line |
| United States | Chicago "L" | 165.4 km (102.8 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| United States | RTA Rapid Transit: Red Line (Cleveland) | 31 km (19 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| United States | Honolulu Skyline | 17.4 km (10.8 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| United States | Los Angeles Metro Rail | 28.0 km (17.4 mi) | 1,435 mm (4 ft 8+1⁄2 in) | B Line and D Line |
| United States | Metrorail (Miami) | 39.3 km (24.4 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| United States | New York City Subway | 380.2 km (236.2 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| United States | Staten Island Railway | 22.5 km (14.0 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| United States | PATH | 22.2 km (13.8 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| United States | SEPTA (Philadelphia) | 48.1 km (29.9 mi) | 1,435 mm (4 ft 8+1⁄2 in) | Broad Street Line and Norristown High Speed Line (latter one a combination of a rapid transit, a commuter rail and a light rail systems) |
| United States | SEPTA (Philadelphia) | 20.8 km (12.9 mi) | 5 ft 2+1⁄2 in (1,588 mm) | Market–Frankford Line |
| United States | PATCO Speedline | 22.9 km (14.2 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| United States | BART (San Francisco) | 186.8 km (116.1 mi) | 1,676 mm (5 ft 6 in) | |
| United States | Washington Metro | 208 km (129 mi) | 4 ft 8+1⁄4 in (1,429 mm) | |
| Puerto Rico | Tren Urbano | 17.2 km (10.7 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Uzbekistan | Tashkent Metro | 66.7 km (41.4 mi) | 1,524 mm (5 ft) | |
| Venezuela | Caracas Metro | 63.6 km (39.5 mi) | 1,435 mm (4 ft 8+1⁄2 in) | Include Los Teques Metro |
| Vietnam | Hanoi Metro | 25.6 km (15.9 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |
| Vietnam | Ho Chi Minh City Metro | 19.7 km (12.2 mi) | 1,435 mm (4 ft 8+1⁄2 in) | |