Blessed has attempted to climb Mount Everest three times without supplemental oxygen, reaching heights of in 1993 and in 1996, but without reaching the summit. He has reached the tops of Mount Aconcagua in Argentina and Mount Kilimanjaro in Tanzania. He is the oldest man to go to the North Magnetic Pole on foot, and has undertaken an expedition into the jungles of Venezuela, during which he survived a plane crash.