Our distances are not driving distances, but are calculated as a 'straight-line' distance that stretches from Port Safety. A straight line distance ignores things like rivers, canyons, lakes, et cetera - it's truly a line drawn from Point A (ie- Port Safety) to Point B.
Our distance measurements begin at a specific point in Port Safety. The point that we are using is located at these GPS coordinates - Latitude: 64.4517, Longitude: -164.8256 [Map]. In this case, the coordinates for Port Safety have been provided by the Geographic Names Information System (GNIS).