The winner of this Iditarod, Thomas Waerner, mushes into Unalakleet, Alaska, a town along the race course. (AP)
The trail is long, and the sled dogs run across packed snow and ice while pulling the sled behind them. (AP)
The people who ride the sled and guide the dogs, called "mushers," race even through the night sometimes. (AP)
Marty Runkle checks in musher Mitch Seavey at the Nikolai, Alaska, checkpoint. (AP)
The dogs wear booties to keep their paws from getting hurt from the cold. (AP)
The snow was deep in Alaska in March. Thomas W. and his dogs pushed on.
They won the Iditarod Sled Dog Race. They crossed the finish line five hours ahead of the next sled. “It is awesome,” said Mr. W.