Libby Riddles knew what she wanted to do with her life when she was just five years old. That childhood dream led her to Alaska and eventually to the famous Iditarod Sled Dog Race. In 1985, Riddles made history by becoming the first woman to win the grueling 1,100-mile race. Here is her compelling story of artic storms, freezing temperatures, loyal sled dogs - and the childhood dream that changed her life.