Sometimes testing limits requires you to look at a familiar place in a new way. When Kilian Jornet returned to the Pyrenees where he’d spent time with his family as a child, he knew he wanted to challenge himself in a way that was as aesthetic as it was a physical and mental challenge. With the assistance of local hut keepers, friends, and a rough GPX track to follow, Kilian traversed the range, linking all of the major 3000m peaks in just 8 days. Along the way he noticed evidence of glacial retreat, experienced the blurring of days and nights, and rediscovered the mountains of his motherland.