A few nice iditarod images I found:
Image by Orbmiser
Zany PDX Iditarod on Broadway with the 55-200vr lens just before the photowalk with Thomas Hawk.
Image by yksin
Right dog looks like s/he wants to play w/ left dog. I think left dog wants to play too.
Iditarod 2011 ceremonial start in Anchorage, March 5, 2011.