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
Sled dog racing the 1994 Winter Olympics in Lillehammer, but it did not gain official event status. Sled dogs, known also as sleighman dogs, sledge dogs, or sleddogs, are a highly trained dog type that are used to pull a dog sled, a wheel-less vehicle on runners, over snow or ice, by means of harnesses and lines. Sled dog races include "sprint" races over relatively short distances of 4 to 100 miles, mid-distance races from 100 to 300 miles, or long-distance races of 300 to over 1,000 miles (Iditarod). Sprint races frequently are two or three-day events with heats run on successive days