I was already extremely impressed by Kilian Jornet when I saw him run op and down Mount Olympus and a few surrounding peaks a few years ago (see video below). But last week blew my mind. I was recovering from the extraordinary achievement of the most Ultra of Ultra runners when he summited Everest in a record-breaking time of 28 hours and 30 minutes when news came yesterday that Kilian had done a second attempt and made it from Everest Base Camp to the Summit in 17 hours. Once again without supplemental oxygen. Just out of this world.