Exploration

200 km across the Atacama: Ray Zahab on survival, heat, and the edge of human limits

Episode 123

Running a marathon a day in extreme heat, the ultra-endurance athlete’s latest expedition shows what resilience looks like and what humans are capable of

Ray Zahab ran a marathon a day as he climbed from the Pacific Ocean to the Andes through Chile's Atacama desert. (Photo: Stephano Gregoretti)
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“The thing about desert expeditions that really takes you by surprise is how quickly things can go off the rails. It goes from good to bad almost instantly. In those moments, I remind myself: I chose to do this.”

We’re excited to be joined again by Ray Zahab, an ultra-endurance athlete, public speaker, author, and RCGS Explorer-in-Residence, among other things.

The Atacama is the world's driest desert, with sections having no officially recorded rainfall. (Photo: Stephano Gregoretti)
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In this thrilling episode of Explore, Zahab takes us through his latest expedition across the driest desert on the planet: Chile’s Atacama. Running a marathon a day over 200 kilometres in extreme heat, Zahab traversed over brutal terrain with constant risk. Carrying minimal gear and relying on cached water, he and his teammate, Stephano Gregoretti, pushed through deep sand, steep climbs, and temperatures that regularly topped 45°C. Along the way, their journey took an unexpected turn when they took part in a real-life rescue in the Andes.

This episode also touches on one of Zahab’s favourite endurance films, Running on the Sun, a cult-classic documentary from 2000 about the Badwater ultramarathon that captures the mindset behind pushing human limits.

This is a powerful conversation about resilience, decision-making under pressure, and the mindset required to endure when things go wrong. 

And a special thanks to long-time listener and friend of the podcast, Aran O’Carroll, who sent in a very thoughtful question for this episode. Zahab has a great answer towards the end.

If you enjoyed this, check out Episode 104 with Ray and RCGS Fellow Kevin Vallely on their self-supported winter ski expedition across Ellesmere Island, Canada’s most northerly Arctic island. 

Ray Zahab (left) and expedition partner Stephano Gregoretti, enjoying a desperately needed drink of water at a mining company water station, after missing their water cache near the end of their 200 km run/climb through the Atacama. (Photo courtesy Ray Zahab and Stephano Gregoretti)
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About Ray: Ray Zahab (@rayzahab) is a Canadian explorer and ultra-endurance athlete known for completing some of the world’s toughest expeditions, including running across the Sahara desert and a record-setting expedition by ski to the South Pole. As an RCGS Explorer-in-Residence, he is dedicated to education and inspiring the next generation through global expeditions.

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