The Yukon Quest Trail: 1,000 Miles Across Northern Alaska and the Yukon TerritoryThe Yukon Quest International Sled Dog Race spans some of the harshest and most beautiful winter territory anywhere: 1,000 miles between Fairbanks, Alaska and the city of Whitehorse in Canada's Yukon Territory. Known as 'The World's Toughest Sled Dog Race, ' it's an event like no other. Run every February, the race is phenomenally challenging, crossing four mountain ranges, including the dangerous and intimidating 3,685 foot Eagle Summit, as it