375.23 kilometres (233.16 miles)
475 KM according to our friends at Google Maps
The distance between Killaloe,Ontario and Ottawa,Ontario is approximately 168 kilometers
356.3 kilometres (221.39 miles)
Approximately 700km - 8 hours if you drive 110km/h on the hwy. including 2 washroom breaks - speed limit is 90km/h most of the way. Hope that helps.