In this March 9, 2012, file photo, musher Mitch Seavey leaves the Ruby, Alaska, checkpoint during the Iditarod Trail Sled Dog Race. The world's most famous sled dog race kicks off Saturday, March 2, 2013, with an 11-mile-long trot through Alaska's largest city, Anchorage. The competition begins Sunday in Willow. (AP Photo/The Anchorage Daily News, Marc Lester, file)
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