Bop from Rochester on 8/3/2019 7:28:39 AM:
The canal West of Pittsford is paved all the way to Long Pond Road, in Greece. Going east, it's the normal hard pack surface. A hard downpour could soften the path somewhat. On the lead page https://bikeeriecanal.com/forum.aspx
There's a picture showing what the path looks like east of Pittsford for the most part.