Dean Karnazes discusses the backstory of his 50/50/50 stunt, what ultrarunning looked like in the nineties, and the attitude ...

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Dean Karnazes, 46, is constantly on the move, tackling new ultrarunning challenges and promoting fitness to youth. Among Karnazes’ feats: Fifty marathons in 50 days in 50 states in 2006; winning the ...

Spartan has launched SpartanTV, a free 24/7 streaming channel featuring race coverage, athlete documentaries, training programs, and original series, aimed at the global obstacle course racing ...