Iditarod Trail Sled Dog Race start in Anchorage is in the middle of a large urban center, most of the route passes through widely separated towns and villages, and small Athabaskan and Iñupiat settlements. The Iditarod is regarded as a symbolic link to the early history of the state and is connected to many traditions commemorating the legacy of dog mushing. The race is a very important and popular sporting event in Alaska, and the top mushers and their teams of dogs are local celebrities; this popularity is credited with the resurgence of recreational mushing in the state since the 1970s. While the yearly field
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