They are pretty good! On the shorter side, but plenty steep in sections. There are so many access points to go up or down the escarpment, that you can just kinda zig zag from Stoney Creek to pretty much St.Catharines (if you could make it the whole way).
I've been wanting to ride from Grimsby to Toronto along the Lake shore, but I don't think I can cover the km's yet. My girl friend lives in the West End off of Parkside, so my final destination isn't that hard to get too... It's just the over all km's...
Do you ride alot in Toronto?