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List of longest tunnels

TypeNameLocationLengthYear
Water supplyDelaware Aqueduct New York State, United States137,000 m (85.1 mi)1945
Water supplyPäijänne Water Tunnel Southern Finland, Finland120,000 m (74.6 mi)1982
Water supplyDahuofang Water Tunnel Liaoning Province, China85,320 m (53.0 mi)2009
Water supplyOrange–Fish River Tunnel South Africa82,800 m (51.4 mi)1972
Water supplyBolmen Water Tunnel Kronoberg/Scania, Sweden82,000 m (51.0 mi)1987
HydroelectricNeelum Jhelum HydroPower Tunnel Muzaffarabad, Azad Kashmir Pakistan68,000 m (42.3 mi)2017
WastewaterTunel Emisor Oriente Mexico City, Mexico62,500 m (38.8 mi)2008–2014
MetroGuangzhou Metro Line 3 Guangzhou, China57,930 m (36.0 mi) Excl. branch2005–2018
Railway Twin TubeGotthard Base Tunnel Central Swiss Alps, Switzerland57,104 m (35.5 mi) and 57,017 m (35.4 mi)2016
MetroBeijing Subway Line 10 Beijing, China57,100 m (35.5 mi)2008–2012

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