Fairbanks is Alaska's second largest city in the U.S. state of Alaska (following Anchorage) and it is the largest city in Alaska's interior. This city, founded by the Klondike gold miners, quickly developed into the largest community in the territory, which was then unorganized. Fairbanks is the starting point and the destination of the Yukon Quest sled dog race, which encompasses a distance of 1000 miles on the way to Whitehorse in Canada. The race takes place every year in February. Fairbanks is located in Alaska's interior region, which consists mainly of low ranges of hills and birch forests bordered by a few larger mountain ranges. The legendary Yukon River flows from Canada into Alaska and through the interior region into the Bering Sea.