Iditarod Trail Sled Dog Race differ by less than . The northern route first passes through Cripple, which is from Anchorage, and from Nome (ITC, "Northern"), making it the middlemost checkpoint. From Cripple, the route passes through Sulatna Crossing to Ruby, on the Yukon River. Ruby is another former gold-rush town which became an Athabaskan village. The southern route first passes through the ghost town of Iditarod, which is the alternate halfway mark, at from Anchorage, and from Nome (ITC, "Southern"). From Iditarod the route goes through the three neighboring Athabaskan villages of Shageluk, Anvik, Grayling, and then on to Eagle Island, Alaska. Ruby and
Iditarod Trail segments pass over private lands. No one entity manages the entire historic trail—management is guided by a cooperative plan adopted by state and federal agencies in the mid-1980s. The federal Bureau of Land Management coordinates cooperative management of the trail and is the primary point of contact for matters involving the entire trail. Every year local groups, community clubs and individuals contribute time and money to maintain and improve the Iditarod Trail. The statewide non-profit Iditarod National Historic Trail Inc. helps protect and improve the trail and keep the "lore of the trail" alive. The Iditarod Trail Sled Dog Race,