Long Sault Parkway (near Cornwall). :-(
Just rode the LSP this afternoon for the first time with family in tow (wife and two girls, 16 & 13) under excellent conditions. All of us have road bikes and pace was very leisurely at 20kph.
Have to say that I'll never ride it again. Excessive number of cracks in the asphalt made the experience quite unpleasant although the scenery and vistas made up for it somewhat.
Continuing on 2 at that point, the logical alternative, is problematic. No shoulder, narrow lane and fast traffic.