Iditarod: Toughest Race on Earth Iditarod: Toughest Race on Earth Iditarod: Toughest Race on Earth was a 2008 American reality television miniseries on the Discovery Channel that featured the 2008 Iditarod Trail Sled Dog Race from Anchorage to Nome, Alaska. The show follows and documents selected racers and their dogs during the trek through Alaska's wilderness. Iditarod entrants pay $3,000 to enter the race and must have completed certain qualifying races beforehand. Expenses for the race can exceed $20,000 and mushers often seek sponsors to aide in paying for the race. Most mushers hold outside jobs in addition to racing. During the course of the
Iditarod Trail Sled Dog Race of Swenson's lead dog, Swenson's body crossed the finish line first. The first musher to win four races was Rick Swenson, in 1982. In 1991 he became the only person to win five times and the only musher to win the race in three different decades. Susan Butcher, Doug Swingley, Martin Buser, Jeff King, Lance Mackey, and Dallas Seavey are the only other four-time winners. Mary Shields was the first woman to complete the race, in 1974 (Finishing 23rd). In 1985 Libby Riddles was the only musher to brave a blizzard, becoming the first woman to win the race. She