WATCH: Kilian Jornet Eats Mountains for Breakfast

Kilian Jornet holds, or has held, speed records on the Matterhorn, Aconcagua, Mont Blanc and Denali. He has won the Ultra-Trail du Mont-Blanc three times, the Hardrock 100 four times and the Sierre-Zinal four times. This winter, he summited Mount Everest twice in one week without the use of supplemental oxygen.

This clip reel shows the Spanish runner at his best.