I am thinking (I know that is hard to believe) of doing a supported tour on the above mentioned rail trail. One thing holding me back so far is I hate to drive to to Pittsburgh and back myself. Anyway, I am thinking of doing the September version. If anyone is interested, please let me know. My car has a nice bike rack that the wheels fit into and thus holds the bike well.
Here is the link.
https://lizardheadcyclingguides.com/road-mountain-bike-tours/gravel-bike-tours/great-allegheny-passage-co-canal-gravel-tour/