Skip across to Gatineau and head up to the Champlain Lookout. Nearby, so you can fit it into a half-day type thing if you want to stay close to town, but great roads and great scenery. Multiple lookouts with great views at all of them.
Make sure to follow the (quite low) speed limits however - police enforcement was everywhere when we were there.
Some great roads on the trip to and from Mount Tremblant as well (just be careful to plot carefully, some of the roads that *look* awesome turn to gravel in some areas, don't ask me how I know), plus Tremblant itself is nice of course. Day trip out of Ottawa.. Do the downhill go-cart things on the ski hill if you get there, it was a lot of fun.
On your way to Ottawa take the 401 to Kingston and take the Perth Rd. to Perth and take Hwy. 7 to Ottawa. Lots of nice twisty sections.
Hwy. 15 from Kingston via Smiths Falls is also a good ride.
There is another road (I forget the name) that will take you to the lovely town of Kirk's Ferry in the Gatineau hills.
Tamworth through Arden to #7 is way better, rougher roads but no pp.Look at Buckshot lake road from highway 41 north of 7...then towards the 509 and 511 to Calabogie. Then you have a couple of choices from there to Ottawa. Those are great roads and even highway 41 is entertaining from Tamworth to Highway 7 as its fresh pavement and fast sweepers. Just watch for OPP.
Tamworth through Arden to #7 is way better, rougher roads but no pp.
Is not bad todayNot so long back there was construction on that one, I don’t know if that’s all done. There’s some potholes and sand in corners too. It’s a great road though. This time of the year I really like 41 along Mazinaw lake to Buckshot Lake Rd. You’ll likely be the only vehicle on Buckshot midweek.
How much time do you have? There’s some great routes that go via Calabogie after Highway 7. You come into Ottawa from the west this way.