My wife and are were planning to burn some frequent flyer miles and go to Anchorage for the Iditarod but it's blacked out so no trip for us.
Iditarod.com is a great site during the race to follow the mushers as they compete. We decided to forego the Insider because our dial up connection is too slow.
Fairbanks-Whitehorse have been staging a far more adventurous and more Alaskan dog race for many years. Anchorage has not been Alaska for many years, and Fairbanks isn't particularly Alaska either anymore, but it is more Alaskan than Anchorage, so check out the Yukon Quest.