The Iditarod is a challenging sled dog race, held in the frigid Alaskan wilderness each year. Sled dogs and mushers must work as a team to battle the elements and become champions. While the race has become a popular sporting event, it began as a life-or-death sprint to save a remote village. Learn about the race's history, its dangers, and some of the daring dogs and mushers who have won Alaska's Iditarod.