The first leg of the race is fast and furious and the rankings are constantly changing. We ride along with some of our mushers to see the techniques they use to train their teams. We also shatter the myths about the health and care of sled dogs and see the race veterinary team at work. Allen Moore starts in first position and against all expectations arrives in Braeburn in 23rd. Every team must check in and pass a veterinary exam. Some will decide to take their mandatory layover here to rest and replenish their supplies. Others, Like Hugh Neff, make a run for Carmacks, the second checkpoint. He started the race in last position but has blasted past the entire pack to take the lead. Can he sustain his lead?