Iditarod Trail named after the now-abandoned town of Iditarod, commemorates the last great gold rush in America to the Iditarod gold fields and the critical role that dogs played in the settlement and development of Alaska. It is a common myth that the race commemorates the dogsled relay known as the 1925 "Serum Run" from Nenana to Nome. The Iditarod Trail Sled Dog Race was first established by Joe Redington, Sr. in the early 1973 to encourage the designation of the Iditarod Trail as a National Historic Trail, bring the dying tradition of dog sledding back to the villages of Alaska, and
Iditarod Trail Sled Dog Race reveals the results of tests on the dogs. Each team is composed of twelve to sixteen dogs, and no more may be added during the race. At least five dogs must be on the towline when crossing the finish line in Nome. Mushers keep a veterinary diary on the trail and are required to have it signed by a veterinarian at each checkpoint. Dogs that become exhausted or injured may be carried in the sled's "basket" to the next "dog-drop" site, where they are transported by the volunteer Iditarod Air Force to the Hiland Mountain Correctional Center at Eagle River