Another great read about the iditarod is "Winterdance" by Gary Paulsen. Although he was never in the top 10 (or the top 25 either), it really added a nice personal touch to the hardships of dog sledding.
On a personal note, I named my Malamute "Niko" after one of the checkpoints, Nikolia. I don't sled any more since he passed away, but I do miss the sport every winter.
Obie