Kilian Jornet, the best mountain runner in history, wrote as a child a list of all the races he would like to win and all the mountains he dreamed of climbing. In May 2017 he ticked off the last on the list with the historic double, solo ascent of Everest, without oxygen and in a single climb. It marked the climax of the Summits of My Life project which over five years took him to some of the world’s most famous peaks…