What is "mushers"

Usage examples of "mushers".

This helped to explain away their shortness and also made them some quick friends, since many of the mushers and fans were of Scandinavian de­scent.

Dogs howled, mushers yelled, the spectators cheered on their favorites, and a diamond-dust snow sifted down on everything.

All around were mushers tinkering with sleds or adjusting harnesses and traces.

While Jim and Cissy dealt with drinks and continued to argue over their favored mushers, Nate turned to the man beside him.