There are overland fiber runs. One map is: http://www.allstream.com/about-us/ipnetwork/ http://www.allstream.com/about-us/ipnetwork/ Those will connect with

There are overland fiber runs. One map is: http://www.allstream.com/about-us/ipnetwork/ http://www.allstream.com/about-us/ipnetwork/ Those will connect with arctic and atlantic undersea cables, so Canada wouldn't be completely cut off.