Our distances are not driving distances, but are calculated as a 'straight-line' distance starting from Tin City. A straight line distance ignores things like rivers, canyons, lakes, et cetera - it's truly a line drawn from Point A (ie- Tin City) to Point B.
Our distance measurements begin at a specific point in Tin City. The point that we are using is located at these GPS coordinates - Latitude: 65.5586, Longitude: -167.9481 [Map]. In this case, the coordinates for Tin City have been provided by the Geographic Names Information System (GNIS).