Rock Run is an easily accessable bouldering area tucked away in the Loyalsock State Forest in North Central Pennsylvania. The rock is quartz conglomerate with a mixture of sandstone and is of great quality. The rock tends to dry quickly after rain and the friction is like velcro in the winter. In the summertime the waterfalls and swimming holes along the creek offer some relief from the heat with very cold waters.
While the main area offers a handful of boulders,there are many more boulders and short cliffs scattered along the upper ridge of the mountain, at the look out and along Miners Run via the Old Miners Trail.
Adjacent mountains offer untapped boulders so explore to your hearts content!
The easiest way to access Rock Run is traveling North of Williamsport, PA to the small town of Ralston and then turn onto Thompson St. Take the forest service road, cross a bridge driving up past the cemetary and take a right at the fork in the road. Look for the boulders on the left in the woods. It is also possible to take the left fork up to a wide parking area on the right which should place you close to the Godzilla Boulder which is visable from the road. Head SouthEast from Godzilla to get to the rest of the boulders in the main area.
Mountain Project's determination of some of the classic, most popular, highest rated routes for Rock Run :