To add to Paul's numbers using Google:
My house in Sandy Hill to Bonnet Rouge: 125 km, 1 hr 36 min.
My house in Sandy Hill to River Run: 127 km, 1 hr 23 min.
My house in Sandy Hill to Rouge take out: 100 km, 1 hr 05 min.
There are adjustments of course, depending on where one lives. For instance my house to Eagleson P'N'R is 22.5 km, or 19 minutes. But from downtown Ottawa, distances to Gatineau and Ottawa rivers are not different in a significant way, in my opinion. If I am prepared to drive that far, the few minutes differences would be dwarfed by the uncertainty introduced by waiting for stragglers, buying coffee along the way, eating pouting etc.
--C.