We did this 53-km loop in a bit less than 3 hours with a couple of stops. Great scenery, very little traffic. A couple of short gravel sections that were no problem for our road bikes. About 1.5 km on Highway 41, but otherwise, all was very quiet. Highly recommended.
From Ontario By Bike E-News: May
Make Ottawa a must visit destination on the top of your list this year. Not only is it the epicentre of Canada 150 celebrations, but it is a truly a great place to explore on two wheels. New this year and now available with online mapping and downloadable PDF's are a series of 16 self-guided rural and urban routes, enough to keep you spinning across the city for days on end.