Ed Viesturs

Edmund "Ed" Viesturs is an American high-altitude mountaineer, corporate speaker, and well known author in the mountain climbing community. He was the first American to climb all 14 of the eight-thousander mountains, and the 5th person to do so without supplemental oxygen. In 2023 Guinness World Records reclassified the first person to summit all 8000ers- due to later recognition of true summits, they awarded Viesturs the record of the first ascent of all 14 peaks.