Iditarod Trail Sled Dog Race to the 2010 census, it has a population of 401, making it the largest checkpoint in the Interior. McGrath is also notable for being the first site in Alaska to receive mail by aircraft (in 1924), heralding the end of the sled dog era. It still has a good airfield, so journalists are common. Following McGrath is Takotna, formerly a commercial hub during the gold rush. The ghost town of Ophir, named for the reputed source of King Solomon's gold by religious prospectors, is the next checkpoint. By this stage in the race, the front-runners may be several days ahead
Iditarod Trail Sled Dog Race where they are taken care of by prison inmates until picked up by handlers or family members, or they are flown to Nome for transport home. According to Iditarod veterinarian Dr. Stuart Nelson, Jr., "Reasons for dropping dogs are numerous. Attitude problems, fatigue, illness, immaturity, injury, being “in heat,” lack of speed and musher strategy, are the more common ones." The dogs are well-conditioned athletes. Training starts in late summer or early fall and intensifies between November and March; competitive teams run before the race. When there is no snow, dog drivers train using wheeled carts or all-terrain vehicles set