Spanish endurance athlete Kílian Jornet is a legendary mountain runner and ski mountaineer. Without a doubt, he's one of the greatest of his generation.

But in 2017, he achieved something that – even by his own mind-boggling standards – was incredible: he travelled up Everest twice, without oxygen, in the space of a week.

In this episode, Kílian tells Rob about how his upbringing has shaped his love of nature, and what motivated him to take on the world’s highest peaks in such spectacular fashion.

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