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American Tim O’Donnell will look to add another world title to his resume (he won the ITU Long Course World Champs in 2009) this weekend at the Ironman World Championship 70.3 in Henderson, Nev. In this video, the reigning 70.3 U.S. champ talks about what it takes to be successful at a half-Ironman distance race.
For more from Vegas visit Triathlete.com/Vegas2012.