In Ottawa, there is a 8 km long well-maintained canal that boasts itself as the longest public skating rink in the world. The citizens of Ottawa regularly use this canal as an alternative to public transport.
In this city you can SKATE to work (or school)!
Rideau Canal Skateway - Ottawa Tourism
The Great Lakes area in Canada and Northern USA is the biggest surface water system in the world and is connected to the Atlantic ocean by the Saint Lawrence Seaway.