On March 6th 2010 one musher in a field of 71 was determined to redefine Iditarod History Lance Mackey set out to do what no musher has ever done win four Iditarods in a row But there were some major obstacles in his way including white out blizzards in the Alaska Range minus 40 degree temperatures in Alaskas interior and at least ten teams that were determined to stop the streak Mackey was chasing history while everybody else was chasing him