The Iditarod Trail Sled Dog Race is over 1,000 miles long.
The history of the Iditarod began in 1925 when a doctor in Nome, Alaska, was desperately in need of medicine.
At twenty, Susan Butcher moved to Colorado and went to college to become a veterinarian.
A plane couldn't be used to get the necessary medicine because the weather was too stormy.
In 1985, Susan left the race after a moose attacked her dogs.
In 1987, Susan Butcher became the first person ever to win three out of four Iditarod races (sau the first woman to win back-to-back).
Susan Butcher moved to Alaska after saving enough money (sau to follow her dream of training dogs).
In 1984, even after falling into freezing cold water, Susan Butcher continued the race and came in second.
The Iditarod trail is named after one of the towns it passed through.