Iditarod

Photos: Iditarod 2012 leaders head toward White Mountain

Sometime after midnight, Dallas Seavey, Aliy Zirkle and Ramey Smyth will march into the White Mountain checkpoint, only 77 miles from Nome and Iditarod glory.

Earlier in the evening it appeared Ramey Smyth was poised to make a move on Zirkle, who he was trailing by just two miles. Zirkle and Seavey have since widened the gap -- Smyth was running about 10 miles behind the two frontrunners just before 11 p.m., according to the Iditarod's GPS tracker.

All mushers are required to layover eight hours at the White Mountain checkpoint before heading onto Nome.

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