There are two routes! The gravel trail gets busy with pedestrians on the weekend. Interesting that the road section is not on the interactive map but it's officially marked on the PDF map: https://schuylkillriver.org/wp-content/uploads/2018/09/2018_05_18_SRT_Map.pdf 

There's also official SRT signs with arrows at each turn if you want to check yourself using street level imagery.