I'm planning on a three day tour this weekend. I'd leave Saturday morning and ride 30 miles to Green Lane Park, camp, and then ride another 30 miles to French Creek State Park. Monday morning I'd ride the 16 mile downhill home before leaving for work.
Here's the tentative route. Note the big climb at the end of the second day - miles 50-58. Nothing like having a wall to scale before setting up camp.
http://www.bikely.com/maps/bike-path/Next-Tour