Our distances are not driving distances, but are calculated as a 'point-to-point' distance from Lucy. A straight line distance ignores obstructions like rivers, canyons, lakes, et cetera - it's truly a line drawn from Point A (ie- Lucy) to Point B.
Our distance measurements begin at a specific point in Lucy. The point that we are using is located at these GPS coordinates - Latitude: 31.0202, Longitude: -85.0410 [Map]. In this case, the coordinates for Lucy have been provided by the Geographic Names Information System (GNIS).