Photos: Iditarod mushers experience Koyukuk

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Bethel musher Peter Kaiser lays down straw for his dog team at the Koyukuk checkpoint on Saturday, March 14, 2015. Koyukuk is a new checkpoint in this year's Iditarod Trail Sled Dog Race.

KOYUKUK -- Ask the mushers pulling into the Koyukuk checkpoint how the 82 miles between here and Huslia were and they'll give you one answer: cold.

"I'm freezing," said Norwegian musher Joar Leifseth Ulsom.

While thermometers read minus 10, it seemed twice as cold in the Koyukuk dog lot nestled on the banks of the Yukon River. Cold temperatures appear to be a constant in this year's race, though mushers coming into the checkpoint seemed to agree that Saturday had been the worst of it.

READ MORE: Colder than cold in Koyukuk