Iditarod Trail Sled Dog Race I The most famous event in the history of Alaskan mushing is the 1925 serum run to Nome, also known as the "Great Race of Mercy." It occurred when a large diphtheria epidemic threatened Nome. Because Nome's supply of antitoxin had expired, Dr. Curtis Welch refused to use it and instead sent out telegrams seeking a fresh supply of antitoxin. The nearest antitoxin was found to be in Anchorage, nearly one thousand miles away. The only way to get the antitoxin to Nome was by sled dog as planes could not be used and ships would be too slow. Governor
Iron Dog 10th annual race in 1994. The race route now follows parts of the Iditarod Trail, the route of the Iditarod Trail Sled Dog Race. It starts at Big Lake and follows the main trail and its connecting trails until it hits to the Yukon River at Ruby. It follows the river to Kaltag before it heads to the Norton Sound on the Bering Sea at Unalakleet and it follows the coast to Nome. Then it returns along the same path in the reverse order to Ruby, where it diverges off its original path by following the Yukon River and its