This should be interesting to follow.

In mid-March 2010 endurance adventurer Andrew Skurka will begin the Alaska-Yukon Expedition (AYE), a 4,700-mile, 7-month-long ski/trek/packraft adventure that begins and ends thirty miles north of the Arctic Circle in northwestern Alaska. The AYE has never before been completed or attempted.

At first glance I though this was another one of those ill conceived expeditions, however this person has a good chance of success based on his previous accomplishments

Andrew Skurka is an accomplished 28-year-old outdoor adventurer who since 2002 has trekked over 23,000 miles. His recent projects have been intense, off-trail endeavors through premier wilderness in Alaska, Iceland, the Colorado Plateau, and California. His earlier achievements include two monumental long-distance hiking firsts -- the 6,875-mile Great Western Loop and the 7,778-mile Sea-to-Sea Route. Skurka has been recognized as "Adventurer of the Year" by National Geographic Adventure and "Person of the Year" by Backpacker.

National Geographic (one of his sponsors) has started a Blog that will be updated periodically. Andrew will also be providing periodic updates via Twitter.

I have no affiliation with the Andrew Skurka nor National Geographic. I am just a person interested in these types of events/expeditions.