If I may be so bold, THIS is what I expect a GS challenge to be. All dirt, all day, and the course was on natural terrain with all that comes with it.
Some of the travel sections of the course could have been challenges themselves.
Unfortunately, it has been too long since the event for me to really remember all the details, but it was FUN. There was mud, slalom courses, hills, trees, rocks, water crossing and single track.
Here I stand, before the event, just feeling all full of piss and vinegar and patriotism.
The most enjoyable part of the event was the part I did the worst at. The Hill Climb. How hard could it be? I just watched person after person just ride right up the hill. So here I go:
Notice the steely glare of concentrations and focus. It give me shivers.
Notice how graceful I am in my carefully planned dismount. One might look at this picture and say to oneself "That man just went ass over tea kettle." and one would be correct.
Thankfully, It only took 3 or 4 of these to get to the top of the hill. Also luckily, a friend video taped the entire adventure, which I have edited to include the appropriate music.