#25. Berlin U-Bahn - Germany
Year opened: 1902
System length: 94.3 routeÌýmiles

The sprawling metro systems of the world enableÌýresidents and travelers alike to reach the furthest corners of a city. From Chicago's famed elevatedÌý"L" to Hong Kong's ultra-modern Massive Transit Railway, these transportationÌýnetworks blend convenience and comprehensiveness with the permanence and costÌýof truly ambitious urban projects.ÌýÌý
To help guide your next global adventure, we've identified the 25 largest metro systems in the world byÌýoverall route length, using data published in news releases, government reports, and the metro-operating companies themselves. Our analysis focuses on heavy rail systems—dedicated, mass-transit rail systems designed to move residents throughÌýa city with speed—as opposed to light rails and commuter trains that typically serve the outer limits of a metro area.Ìý
Together, these transportationÌýnetworks account for over fourÌýbillion miles of possible travel. For each metro system on our list, you'll find an image that encapsulatesÌýthe sprawling city serviced, as well as a handy route map for your travels.
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Year opened: 1902
System length: 94.3 routeÌýmiles
Year opened: 1902
System length: 94.3 routeÌýmiles
Year opened: 1984
System length: 100.0 routeÌýmiles
Year opened: 1984
System length: 100.0 routeÌýmiles
Year opened: 1897
System length: 102.8 routeÌýmiles
Year opened: 1897
System length: 102.8 routeÌýmiles
Year opened: 1972
System length: 112.0 routeÌýmiles
Year opened: 1972
System length: 112.0 routeÌýmiles
Year opened: 1999
System length: 123.0 route miles
Year opened: 1999
System length: 123.0 routeÌýmiles
Year opened: 1979
System length: 116.4 routeÌýmiles
Year opened: 1979
System length: 116.4 routeÌýmiles
Year opened: 1976
System length: 118.0 routeÌýmiles
Year opened: 1976
System length: 118.0 routeÌýmiles
Year opened: 2010
System length: 121.0 routeÌýmiles
Year opened: 1927
System length: 121.2 routeÌýmiles
Year opened: 1927
System length: 121.2 routeÌýmiles
Year opened: 2010
System length: 121.0 routeÌýmiles
Year opened: 1987
System length: 124.0 routeÌýmiles
Year opened: 1987
System length: 124.0 routeÌýmiles
Year opened: 1900
System length: 133.0 routeÌýmiles
Year opened: 1900
System length: 133.0 routeÌýmiles
Year opened: 1969
System length: 140.7 routeÌýmiles
Year opened: 1969
System length: 140.7 routeÌýmiles
Year opened: 2004
System length: 147.0 routeÌýmiles
Year opened: 2004
System length: 147.0 routeÌýmiles
Year opened: 2002
System length: 156.6 routeÌýmiles
Year opened: 2002
System length: 156.6 routeÌýmiles
Year opened: 2005
System length: 164.0 routeÌýmiles
Year opened: 2005
System length: 164.0 routeÌýmiles
Year opened: 2004
System length: 176.5 routeÌýmiles
Year opened: 2004
System length: 176.5 routeÌýmiles
Year opened: 1919
System length: 182.7 routeÌýmiles
Year opened: 1919
System length: 182.7 routeÌýmiles
Year opened: 1974
System length: 189.2 routeÌýmiles
Year opened: 1974
System length: 189.2 routeÌýmiles
Year opened: 2005
System length: 216.0 routeÌýmiles
Year opened: 2005
System length: 216.0 route miles
Year opened: 1935
System length: 223.4 routeÌýmiles
Year opened: 1935
System length: 223.4 route miles
Year opened: 1997
System length: 242.7 routeÌýmiles
Year opened: 1997
System length: 242.7 routeÌýmiles
Year opened: 1904
System length: 246.0 routeÌýmiles
Year opened: 1904
System length: 246.0 routeÌýmiles
Year opened: 1890
System length: 253.0 routeÌýmiles
Year opened: 1890
System length: 253.0 routeÌýmiles
Year opened: 1971
System length: 372.4 routeÌýmiles
Year opened: 1971
System length: 372.4 routeÌýmiles
Year opened: 1993
System length: 413.0 routeÌýmiles
Year opened: 1993
System length: 413.0 routeÌýmiles