China leads the world in High-speed rail network as of December, 2021 according to the Atlas High-Speed Rail 2022 report published by the International Union of Railways (UIC). China has over 40,000 km of route network currently in operation. Spain ranks the second with over 3,600 kms followed by the original hi-speed leader Japan. The emerging country of Turkey is among the top 10 with over 1,000 kms of track. This is surprising.
The US ranks 11th in the list but ahead of Saudi Arabia with a total track length of 735 kms.
Length of high-speed rail network in commercial operation by country:
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Source: Atlas High-Speed Rail 2022, UIC