The Worlds most hardcore endurance races (we’re on the list)

hardcoreSo, you’ve mastered the marathon, triumphed in the triathlon and kicked ass in the CrossFit Games. But what does an endurance sports adrenaline junkie do next? Here are 12 of the world’s most hardcore endurance races to test your bones, brains and bodily fluids to their absolute limits and earn you bragging rights for the rest of your life…click for more

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