This route was created to my knowledge by Climber Kyle, his report is available here and is recommended reading for anyone considering attempting this: https://climberkyle.com/2021/06/26/townsend-buckhorn-ridge-run/ 

This route takes place on the historic Delaware & Raritan Canal path in New Jersey and the historic Delaware Canal towpath in Pennsylvania. The canals and their towpaths were originally constructed in the 1830's and a portion of this route on the New Jersey side is a former rail line constructed in the 1850's.

This is an extremely popular area for recreation seekers. Weekends see the paths filled with walkers, runners and cyclists.