From the Trailhead start on the eastern entrance. The first part is pretty flat then you get into some rocky uphills. But right after the halfway the trail gets much better. Some cool up and down speedy hills and then 4 miles of very gradual downhill. You can cruise in your top gear it is alot of fun.
Great downhill reward at the end.
My winter pad is 3 minutes from South Mountain Park. I have yet to tire of this place. Awesome trails and challenges. This a good ride for all. Rocky in places, but not enough to deter a newbie.