This park is absolutely fantastic and worth the entrance fee. There is plenty of parking and even a "real" restroom....but the true reason it shines? It is absolutely isolated. Camelback hikers will be shocked at the few people they will see. I park at Overton, merge to Go John. I do the Go John loop in its entirety and end up coming back down Overton the way I came. It is a "lollipop" loop for those looking for a loop. Plenty of hills, an occasional rattlesnake and gorgeous views in a little over 9 miles. Takes about 2 hours running/hiking. There just aren't enough good things to say about this park.