Our distances are not driving distances, but are calculated as a 'straight-line' distance from Three Brothers. A straight line distance ignores things like rivers, canyons, lakes, et cetera - it's truly a line drawn from Point A (ie- Three Brothers) to Point B.
Our distance measurements begin at a specific point in Three Brothers. The point that we are using is located at these GPS coordinates - Latitude: 36.4526, Longitude: -92.4657 [Map]. In this case, the coordinates for Three Brothers have been provided by the Geographic Names Information System (GNIS).