reedmaniac.com
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82 Summits In 62 Days, Ueli Steck Tests His Endurance In The Alps

Link. "Ueli decided to return to the Alps to attempt a very different take on a classic alpine challenge; climb all 82 summits of 4,000 metres or above in the European Alps in less than 80 days, and to top it all off, to complete the challenge using only human power from start to finish."

Extraordinary accomplishment. Definitely a human pushing the limits of what is possible.