The Seikan Tunnel of Japan is one of the longest tunnels in the world with a distance of 53.85 km.
Channel tunnel is the longest undersea tunnel in the world connecting the United Kingdom and France with a distance of 50.5km.
Brenner Base Tunnel is a 55 km long tunnel which is under construction In Austria.
Gotthard Base Tunnel is 57 km long rail tunnel connecting the rail link between Northern and Southern Europe.
Yulhyeon Tunnel is the longest tunnel rail of South Korea with a distance of 50.3 km connecting Seoul and Busan.
The new Guanjiao Tunnel is in China which connects the city of Gansu and Qinghai with a high speed rail.
Lötschberg Base Tunnel is a rail tunnel of 34.6 km which is used for the passengers trains and reduces the time to reach the southern Italy.