| 1 |
Gotthard Base Tunnel
|
57.1 km
|
The world's longest and deepest railway tunnel, crossing beneath the Swiss Alps, opened in 2016 after 17 years of construction. |
| 2 |
Seikan Tunnel
|
53.9 km
|
Undersea tunnel connecting Honshu and Hokkaido beneath the Tsugaru Strait, now carrying Hokkaido Shinkansen trains. |
| 3 |
Channel Tunnel
|
50.5 km
|
Undersea tunnel connecting England and France beneath the English Channel, carrying Eurostar and freight shuttles. |
| 4 |
Ceneri Base Tunnel
|
15.4 km
|
Southern complement to the Gotthard Base Tunnel, completing the flat route through the Swiss Alps, opened in 2020. |
| 5 |
Lotschberg Base Tunnel
|
34.6 km
|
The first base tunnel through the Swiss Alps, connecting Bern with the Valais via a flat route since 2007. |
| 6 |
Guadarrama Tunnel
|
28.4 km
|
Twin-bore tunnel through Spain's Sierra de Guadarrama mountains on the Madrid-Valladolid high-speed line. |
| 7 |
Taihang Tunnel
|
27.8 km
|
China's longest railway tunnel on the Shijiazhuang-Taiyuan passenger-dedicated line through the Taihang Mountains. |
| 8 |
Iwate-Ichinohe Tunnel
|
25.8 km
|
Japan's longest land tunnel on the Tohoku Shinkansen line between Morioka and Hachinohe in northern Honshu. |
| 9 |
Hakkoda Tunnel
|
26.5 km
|
On the Tohoku Shinkansen extension, this tunnel passes through heavy snowfall regions in Aomori Prefecture. |
| 10 |
Pajares Base Tunnel
|
24.7 km
|
Twin-bore tunnel through Spain's Cantabrian Mountains on the Variante de Pajares high-speed line in Asturias. |