Mackey crossed the finish line in Nome on Tuesday to become the only musher in the 38-year history of the Iditarod to win four consecutive races.
Mackey was cheered by fans bundled up against subzero temperatures to welcome the reigning champ as his team coasted up the main street of this old Gold Rush town.
For winning, Mackey gets a new Dodge truck and $50,400.
This year's Iditarod kicked off on March 6 with a ceremonial start in Anchorage.
That was followed by the competitive start the following day in Willow when 71 teams took to the Iditarod trail and headed to Nome.