The teams are getting smaller as fatigued and poorly performing dogs are left behind. The top 10 are running with between 9 and 12 dogs, down from 16, and the majority have either 10 or 11. A fair number of dogs have been dropped with fatigue or sprains caused by the poor conditions of the trail. Teams with less than 9 dogs lack power. There has been a fair amount of rain, which helps keep the dogs cool in the high temperatures. The winds as the teams cross the exposed ice of the Norton Sound on the way to Koyuk may reach 40 mi/h (65 km/h). This is the stretched covered by Leonhard Seppala and his lead dog Togo during the 1925 serum run. Teams may press through to Koyuk to catch Sørlie.