From Pine Rd. Parking lot trail head is pretty easy to find. Once in the trails this place is pretty confusing. There's paved paths, horse paths and single track. Some areas have tons of single track snaking throughout, some trails are loops and other trails actually go somewhere. Lots of bridges to go under or over and find another trail on the other side. I have not explored everything but it's easy to get 13-15 miles of singletrack here if you know where you're going. As for the riding... it's not challenging but it is very fun. Lots of flow trails and some tight twisty trails. The occasional log is the most challenging aspect. Not a lot of climbing either. Wissahickon is much more challenging. But this place is fun if you have a couple hours to explore.