I was reading an article in the Herald from a couple of weeks ago and was wondering if anyone has done this loop of the city? My son wants me to take him on it (double bike) but his longest ride has been about 50k. At 94k not sure he would make it

Thinking about going solo today to check it out and was wondering if anyone has done this recently. The map in the paper isn't very clear! Is it bike path the entire way? Does it really take 6-8 hours? I am thinking of starting near Chaparral Valley....so where to?