Archive puzzle · October 18, 2026
The World's Longest Railway Tunnels
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About this puzzle
Most train tunnels pass in a few seconds of darkness, but these are different animals. The longest rail tunnels on Earth run for more than half an hour at full speed, boring beneath mountain ranges and seabeds to keep the rails flat. Rank these five from the longest dig to the shortest.
Ranked descending · length (miles)
What's in this puzzle
Listed alphabetically, without their values - the answer order stays hidden until you play.
- Channel Tunnel (UK and France)
- Gotthard Base Tunnel (Switzerland)
- Seikan Tunnel (Japan)
- Shanghai Airport Tunnel (China)
- Yulhyeon Tunnel (South Korea)
Read the facts
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More travel rankings from the archive.