Here's why:

* Northernmost Point: Canada's northernmost point is Cape Columbia, located on Ellesmere Island in Nunavut. It sits at 83°06′N latitude.

* Westernmost Point: Canada's westernmost point is Cape Prince of Wales, located on the Seward Peninsula of Alaska. It sits at 168°05′W longitude.

While Russia does extend farther north overall, its easternmost territory is still within the Eastern Hemisphere. Canada, on the other hand, stretches across both the Eastern and Western Hemispheres, giving it the distinction of extending farthest north farther west.