Rowing is an activity generally associated with either water or stationary equipment in an exercise club. It typically is not thought of as a reasonable way to get across Canada, not least in part due to the fact that the combination of the St. Lawrence River and Great Lakes will only get you half way across the several thousand mile distance.
In 2001, a group of friends from Halifax Nova Scotia on the Atlantic coast nevertheless decided to try rowing across Canada by creating a roadboat. They adapted hardware from gym rowing machines to a wheeled vehicle and set off to raise money for the Make Wish Foundation. In that attempt, they had made it to Toronto in two months before having to give up. But if you're going to build a roadboat, you've obviously got gumption. The team is currently preparing to try again using a revamped roadboat.
[Source: Rowing Across Canada via Gizmodo]