Dallas Seavey - the winner of the 2014 Iditarod - is the first musher into White Mountain. He checked in at 10:10 Tuesday morning.
Mitch Seavey and Aaron Burmeister are running in second and third place, respectively.
Jessie Royer and Joar Leifseth Ulsom round out the top-5.
All mushers are required to take an 8-hour layover in White Mountain before continuing the last Safety and Nome.
White Mountain is 77 miles from the finish line in Nome.