The 9-10 are very hard. This is the same area as Warpath. Bone is as hard, maybe harder than Warpath. Ain't Worth It is short but is one of my favorite. The Shaft & Off Again are two really extreme trails that are going to run together.
All of the trail have short drive time to reach them and very little pavement. Warpath is not being run, but is in the area and if you are equipped LCFWDC will tell you how to get there. I still have to run 2 or 3 more of the 9-10's.