Longest Tunnels in the World
      

Name

Location

Length

Type

Year

Delaware Aqueduct

New York state, United States

137,000 m (85.1 mi)

Water supply

1945

Päijänne Water Tunnel

Southern Finland, Finland

120,000 m (74.6 mi)

Water supply

1982

Dahuofang Water Tunnel

Liaoning Province, China

85,320 m (53.0 mi)

Water supply

2009

Orange–Fish River Tunnel

South Africa

82,800 m (51.4 mi)

Water supply

1972

Bolmen Water Tunnel

Kronoberg/Scania, Sweden

82,000 m (51.0 mi)

Water supply

1987

Guangzhou MetroLine 3

Guangzhou, China

60,400 m (37.5 mi)Excl. branch

Metro

2005-2010

Tunel Emisor OrienteWater management in Greater Mexico City

Mexico City, Mexico

62,500 m (38.8 mi)

Waterwaste

2006-2012

Beijing SubwayLine 10

Beijing, China

57,100 m (35.5 mi)

Metro

2008-2012

Gotthard Base Tunnel

Switzerland

57,000 m (35.5 mi)

Railway Tunnel

 

Sources: CC Search, Google Images, Wikipedia.org