|KMZ file loaded into Google Earth|
The files contain the same information: checkpoint (and dog drop etc) locations as well as the race trail for odd years. I condensed this data from a variety of sources and hand-cleaned it, but obviously it will only be approximate, and the trail will vary from year to year. Also, because the trail is made up of points that are about half a mile distant, the total distance is being underestimated (it comes out to 911 miles according to this track). So please take this (ENTIRELY UNOFFICIAL) file with a good pinch of salt! If it is helpful or useful, I'd be glad.