“The world’s longest stairway – 11.674 steps up”

Psych your mind and imagine: A run up the world’s longest staircase at the annual Niesenlauf race. 11.674 steps up the Niesen (Switzerland) with a vertical gain of 1660m in 3.4km of running. Average gradient of 55%.and Maximum grade is 68%. Running up the longest staircase in the world, Niesenlauf – YouTube   https://youtu.be/Qfn5TJpWp3c   https://youtu.be/oECqKJdGcSE    

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