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Articles on Ultra-endurance

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The Badwater Ultra-marathon bills itself as the world’s toughest, covering 217 km from Death Valley National Park to Mount Whitney, California REUTERS/Lucy NicholsonREUTERS/Lucy Nicholson

Ultramarathon running: how safe is the sport?

The deadly toll of last month’s mountain race in Gansu province, China, has shaken competitors and fans alike. But is the sport dangerous?

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