The North Wales Coastal Path is a great unicycle ride, 16 miles from the North end of Colwyn bay, past Rhyl and on to Prestatyn. Sea view all the way, virtually flat, with only a couple of shortl hills to provide some entertainment. The surface is good all the way so 36" wheels will be fine. There is a horrid bit near Prestatyn with a camber that does my head in! There are plenty of cafe's along the way, one in Pensarn does a mouth watering home made hot pot. The ride could be done in one go or in stages.
There are rail stations in Colwyn Bay, Rhyl and Prestatyn, so the route could be done one way and a train back. The winds are often westerly so bear this in mind.
A good ride well worth a visit.