By Evan Bleier In 2019, Swiss-Ecuadorian alpinist Karl Egloff climbed up from basecamp at Denali to the mountain’s 20,310-foot summit and then back down using a combo of hiking boots, snowshoes and running shoes in 11 hours and 44 minutes to set the fastest known time (FKT) for summitting and descending North America’s highest peak. It was quite a feat, but it’s just one of seven that Egloff needs to accomplish in order to set the new world speed record for climbing the tallest mountain on each of the continents, a septet of peaks known as the Seven Summits. In addition to Denali (North Americ…