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In this March 5, 2013 photo, four-time Iditarod champion Martin Buser leaves the Rohn checkpoint in Alaska during the Iditarod Trail Sled Dog Race. (AP Photo/The Anchorage Daily News, Bill Roth)

In this March 5, 2013 photo, four-time Iditarod champion Martin Buser leaves the Rohn checkpoint in Alaska during the Iditarod Trail Sled Dog Race. (AP Photo/The Anchorage Daily News, Bill Roth)

Iditarod crowns champ

53-year-old musher Mitch Seavey became the oldest winner and a two-time Iditarod champion when he drove his dog team under the burled arch in Nome on March 12, 2013.