It is a very secluded, so there is not many spectators other than the aid/relay exchange stations. Having the half marathoners start an hour later than the full keep you from having to run through walkers at the finish, although everyone was walking up that hill.
The course is not easy. Miles ~7-14 are uphill on something they call a tank road. It is rough gravel (jagged 1-2 inch rocks). Hard to a spot that was well packed, so it beats up your feet pretty good. This is followed by a mile on a dirt, single track. When reach pavement again SLOW DOWN! Mile 16 is a steep downhill and you will burn out your quads if you let you go too hard. It is pretty flat the rest of the on the bike path until mile 26. At the point you merge with the half marathoners (who start an hour later) to join in the misery of an ungodly 100 foot ascent before running across a parking lot an finishing on the track.