The Iditarod is a challenging dogsled 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.

Nome calling -- The serum run -- The great race -- Survival on the trail -- Born to run -- Whatever it takes -- A will to win -- Tough questions -- A changing environment -- The Iditarod meets the future.