Our distances are not driving distances, but are calculated as a 'straight-line' (or point-to-point) distance that begins in Trafford. A straight line distance ignores things like rivers, canyons, lakes, et cetera - it's truly a line drawn from Point A (ie- Trafford) to Point B.
Our distance measurements begin at a specific point in Trafford. The point that we are using is located at these GPS coordinates - Latitude: 33.8229, Longitude: -86.7510 [Map]. In this case, the coordinates for Trafford have been provided by the Geographic Names Information System (GNIS).