Desc: Iron Dog Snowmobile Race: Directed by Brad Hillwig. In this high-octane adventure race, snowmobile riders traverse more than 2,000 perilous miles across interior Alaska at speeds of up to 100 miles per hour. Known as the world's longest, toughest snowmobile race, riders must navigate sub-zero temperatures, fierce winds and Alaska's most unforgiving terrain. In 2015, Iron Dog legend Scott Davis seeks a record eighth win, but a new twist on an old rivalry and some dramatic weather conditions mean that nothing is guaranteed. It's a 2,000-mile game of strategy, adrenaline and skill from start to finish. Known as the world's longest, toughest snowmobile race, snowmobile riders traverse more than 2,000 perilous miles across interior Alaska's most unforgiving terrain at speeds of up to 100 miles per hour. The world's longest, toughest snowmobile race, a 2,000 mile sprint across interior Alaska.