The Great Alone

Billed as ''The Last Great Race on Earth'', the Iditarod Trail is the toughest dog sled race in the world. Snaking through over a thousand miles of the Arctic''s harshest wilderness, the race is one of Alaska''s proudest traditions and Lance Mackey is its greatest champion. He''s a man who has battled homelessness, addiction and cancer, but who has always returned to the sled.