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You’ve likely heard the saying that life is a marathon, not a sprint. But in many ways, it most resembles a steeplechase race—a never-ending race with hurdles along the way that need to be overcome at top speed without breaking

Famed ultramarathoner (and AQ contributing editor) Dean Karnazes is no stranger to monumental running challenges. Ten years ago he ran 50 marathons in fifty states in fifty consecutive days. He’s also run350 miles in under 81 hours, foregoing sleep for