Our distances are not driving distances, but are calculated as a 'point-to-point' distance starting from Wylam. A straight line distance ignores things like rivers, canyons, lakes, et cetera - it's truly a line from Point A (ie- Wylam) to Point B.
Our distance measurements begin at a specific point in Wylam. The point that we are using is located at these GPS coordinates - Latitude: 33.5059, Longitude: -86.9253 [Map]. In this case, the coordinates for Wylam have been provided by the Geographic Names Information System (GNIS).