Our distances are not driving distances, but are calculated as a 'point-to-point' distance that begins in Smithville. A straight line distance ignores things like rivers, canyons, lakes, et cetera - it's truly a line drawn from Point A (ie- Smithville) to Point B.
Our distance measurements begin at a specific point in Smithville. The point that we are using is located at these GPS coordinates - Latitude: 33.0540, Longitude: -93.8677 [Map]. In this case, the coordinates for Smithville have been provided by the Geographic Names Information System (GNIS).