Bill in Houston from Houston on 1/23/2023 10:22:34 AM:
If I had 3 days and wanted to do that distance, I'd start in Buffalo, and ride to Palmyra or Newark.
You are parallel to the old canal, which is so nice, and the towns along the way are great. Lots of older history.
There is also less road riding, and it's fairly flat.
If you have concerns about hills, try to avoid the section between Newark and Weedsport. Some people say it doesn't have hills, but when I was there, I was on hills. I guess it depends on your frame of reference. A lot of it is also on roads.