Our distances are not driving distances, but are calculated as a 'point-to-point' distance. A straight line distance ignores obstructions like rivers, canyons, lakes, et cetera - it's truly a line from Point A (ie- Gravel Hill) to Point B.Our distance measurements begin at a specific point in Gravel Hill. The point we use is located at these GPS coordinates - Latitude: 36.2073, Longitude: -82.5946 In this case, the coordinates for Gravel Hill have been provided by the Geographic Names Information System (GNIS).