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
Iditarod Trail Sled Dog Race determined during a banquet held two days prior by the mushers drawing their numbers for starting position. Selections are made in the order of musher registrations. This is an exciting portion of the race for dogs and musher, as it is one of the few portions of the race where there are spectators, and the only spot where the trail winds through an urban environment. However, in "Iditarod Dreams", DeeDee Jonrowe wrote, "A lot of mushers hate the Anchorage start. They don't like crowds. They worry that their dogs get too excited and jumpy." The time for covering this portion