Brazilian Ultrarunner Fernanda Maciel shattered the female speed record on Kilimanjaro a week ago, bettering the old time by nearly three hours.
As elite athletes take advantage of new research
For most, climbing Everest once would be the achievement of a lifetime. This past week Spanish ultrarunner Kilian Jornet summited Everest twice, after solo, speed ascents without the use of
FKTs—fastest known times—are the holy grail for elite endurance athletes these days. To set a speed record running through remote mountains, often days at a time, represents the
