speed record around it. References The Rest of Everest Site bclarkmtn.com Colorado’s Burliest Backyard Mountain Adventure Tests What’s Humanly Possible Chasing a Speed Record on One of the World’s Highest, Hardest Treks Why Bhutan Is the Toughest Place in the World To Set a Himalayan Speed Record American mountain climbers 1979 births Living people American summiters of Mount Everest