Our distances are not driving distances, but are calculated as a 'straight-line' distance starting from Port Clarence. A straight line distance ignores obstructions like rivers, canyons, lakes, et cetera - it's truly a line drawn from Point A (ie- Port Clarence) to Point B.
Our distance measurements begin at a specific point in Port Clarence. The point that we are using is located at these GPS coordinates - Latitude: 65.2622, Longitude: -166.8458 [Map]. In this case, the coordinates for Port Clarence have been provided by the Geographic Names Information System (GNIS).