Fossett was a lifelong mountain climber and had climbed the highest peaks on six of the seven continents. In the 1980s, he became friends with Patrick Morrow, who was attempting to climb the highest peaks on all seven continents for the Seven Summits world record, which Morrow achieved in 1985. Fossett accompanied Morrow for his last three peaks, including Vinson Massif in Antarctica, Carstensz Pyramid in Oceania, and Elbrus in Europe. While Fossett went on to climb almost all of the Seven Summits peaks himself, he declined to climb Mount Everest in 1992 due to asthma. He later returned to Antarctica to climb again.