(120513) -- VANCOUVER, May 13, 2012 (Xinhua) -- A competitor participates in the 2012 Spartan Race obstacle racing challenge in Vancouver, Canada, May 12, 2012. Spartan Race consists of the Spartan Sprint (3-miles of obstacle racing), trail races, mud runs, tough mudder runs, warrior dash, spear throwing, climbing the wall and American Gladiators. (Xinhua/Sergei Bachlakov)
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