69 miles, @ 5,000' climbing. I've not done this ride but it was suggested to me. Elevation profile looks omnious. There is a short out and back at mile 32 on the Susequehanna River (not sure if there is a convinience store there or not but the Indian Step Museum is there, see below)) but definite rest stop is at mile 41 (Rutters).

Supposed to be hot with a chance a rain so please plan accordingly. 

Indian Steps Museum is a one of a kind destination set along the Susquehanna River. Originally an arts and crafts style cabin, it was completed in 1912 by a wealthy lawyer from York County, PA.  John Edward Vandersloot wanted to share his local prehistoric Indian artifact collection with his guests by embedding these items both in the interior and exterior of the building. Vandersloot was enamored with Native American history and culture, and built the cabin as a testament to the long history of Native American Indians.