Here's another nifty open source aps, designed to help you find a "nice bike route in Ottawa". It's called BBBike @ Ottawa. You enter a start & finish point, and then you get a Google map with a route suggestion. Not all local streets are listed -- it looks like the list includes just "old" Ottawa and Gatineau roads -- I couldn't find our house in Kanata, for example. Still, a useful site for Ottawa cyclists.
For more routes and cycling maps, check out our Ottawa Bike Guide.