North Pole Marathon

http://www.npmarathon.com/

Welcome to the running experience of a lifetime. On April 8th 2006 athletes like you will have the opportunity to make history as a continuing new breed of Arctic adventurer. By competing in the world’s coolest marathon, the North Pole Marathon™, you will become one of a truly select few to race at the top of the world - at the Geographic North Pole. And you will feel on top of the world when you manage to overcome the extreme sub-zero temperatures to finish 26.2 miles in one of the remotest parts of the planet.


and a blog from one of the competitors:

http://www.northpolemadness.blogspot.com/