The world’s longest snowmobile race, held in Alaska, is called the Iron Dog.
The Iron Dog is an extreme cross-country snowmobile race across Alaska. It typically uses a route linking communities such as Big Lake, Nome, and Fairbanks, although the course can change with weather, trail conditions, and logistical considerations. The event covers roughly 2,000 miles, making it one of the most demanding races in the sport.
The race began in 1984 as the Iron Dog Gold Rush Classic, covering about 1,000 miles. By the 1990s, the course had been expanded to approximately 2,000 miles. It follows portions of the historic Iditarod Trail, but it is not the Iditarod, which is a separate long-distance sled-dog race.
Teams generally compete with two riders and two snowmobiles, an important safety arrangement given Alaska’s remoteness and severe winter temperatures. “Arctic Man” is another Alaska winter event, while the Yukon Quest is associated with dog sledding. Neither is the canonical answer to this snowmobile-race question.