Iditarod Trail Sled Dog Race early in the 20th century. The main route of the Iditarod trail extends from Seward in the south to Nome in the northwest, and was first surveyed by Walter Goodwin in 1908, and then cleared and marked by the Alaska Road Commission in 1911 and 1912. The entire network of branching paths covers a total of . Except for the start in Anchorage, the modern race follows parts of the historic trail. The trail is composed of two routes: a northern route, which is run on even-numbered years, and a southern route, which is run on odd-numbered years. Both follow
Alpirod no sponsor emerged. The Alpirod was a pioneer in the use of dog microchip identification, requiring it several years before the Yukon Quest or Iditarod made the process mandatory. The unofficial successor to the Alpirod is the AlpenTrail, a sled dog race in the Alps started by several of the Alpirod's organizers. Alpirod The Alpirod is a defunct sled dog stage race in Southern Europe. Its name comes from a combination of the Alps, where the race took place, and the Iditarod Trail Sled Dog Race, upon which the race was based. The competition consisted of a 14-day stage race