Our distances are not driving distances, but are calculated as a 'point-to-point' distance. A straight line distance ignores things like rivers, canyons, lakes, et cetera - it's truly a line drawn from Point A (ie- Udall Landing) to Point B.Our distance measurements begin at a specific point in Udall Landing. The point we use is located at these GPS coordinates - Latitude: 36.5431, Longitude: -92.2890 In this case, the coordinates for Udall Landing have been provided by the Geographic Names Information System (GNIS).