List of longest subway tunnel sections


This page presents a list of the longest continuous underground rapid transit tunnel sections of the world, excluding branches from the longest tunnel.
Note: This article only lists tunnels that are 15 km or longer.

World's longest subway tunnel sections in use

NameSystemCountryStationsLength in km Year of
completion
Lines 3-11Suzhou MetroChinaconvert|86.54|km|mi|abbr=on

World's longest subway tunnel sections under construction

NameSystemCountryStationsLengthExpected completion
Line 15Paris MétroFranceconvert|75|km|mi|abbr=on