The World's Toughest Endurance Challenges: Hoad, Richard, Moore, Paul: 9781934030912: Amazon.com: Books
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Juan Fernandez close to the finish line during the race.The Granada-Pico Veleta international ascent is one of the toughest ultra-endurance races in the world held in Sierra Nevada. 50 kilometers from the
ENDURANCE: The Documentary about Porsche at the Two Toughest GT Races in the World. - YouTube
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Bear Grylls in first trailer for 'toughest endurance race on Earth' - Evening Express
