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The ULTRAMAN WORLD CHAMPIONSHIPS is an athletic odyssey of personal rediscovery; as such, it is the next step in the endurance challenge of being human. Covering a total distance of 320 miles (515 kilometers) on the Big Island of Hawaii requires that each participant complete a 6.2 mile (10 K) open ocean swim, a 261.4 mile (421 K) cross-country bike ride, and a 52.4 mile (84 K) double-marathon run.