By Sophie Weiner, Popular Mechanics; February 16, 2018
Have you ever wondered what the longest train journey is? Many potential routes, especially through Europe, are cut short due to the different gauge of tracks used by different countries around the world. For example, this is why you can’t easily travel to the UK from Spain or Portugal, who originally created their different gauged tracks to prevent the French from invading by train.
A few trains around the world switch gauges, a painstaking ordeal that can take hours. One of these is the Trans-Siberian Railway, which, unsurprisingly, is one of the world’s longest passenger train services. The absolute longest, however, is a train carriage that’s sent by the North Korean state rail system to the border with Russia, where it’s attached to the back of a Russian train that then travels to Moscow, a journey that takes 206 hours and covers 6,380 miles, as this video by Half As Interesting explains:
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