Our distances are not driving distances, but are calculated as a 'straight-line' distance. A straight line distance ignores things like rivers, canyons, lakes, et cetera - it's truly a line drawn from Point A (ie- Graham Mill) to Point B.Our distance measurements begin at a specific point in Graham Mill. The point we use is located at these GPS coordinates - Latitude: 36.1773, Longitude: -82.5443 In this case, the coordinates for Graham Mill have been provided by the Geographic Names Information System (GNIS).