List of long tunnels by type

This page presents the same tunnels as in list of tunnels by length in separate lists according to the different tunnel types.

Only continuous tunnel sections should be included, excluding branches from the longest tunnel.

Only continuous tunnel sections should be included, at least 13 km long.

See also List of metro systems#Metro systems under construction.

Note: There are buried oil and gas pipelines, up to several thousand kilometers long. See also:

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