Our distances are not driving distances, but are calculated as a 'point-to-point' distance that begins in Chappell Hill. A straight line distance ignores things like rivers, canyons, lakes, et cetera - it's truly a line from Point A (ie- Chappell Hill) to Point B.
Our distance measurements begin at a specific point in Chappell Hill. The point that we are using is located at these GPS coordinates - Latitude: 31.8918, Longitude: -88.2556 [Map]. In this case, the coordinates for Chappell Hill have been provided by the Geographic Names Information System (GNIS).