Our distances are not driving distances, but are calculated as a 'straight-line' (or point-to-point) distance starting from Wood River. A straight line distance ignores things like rivers, canyons, lakes, et cetera - it's truly a line drawn from Point A (ie- Wood River) to Point B.
Our distance measurements begin at a specific point in Wood River. The point that we are using is located at these GPS coordinates - Latitude: 59.0692, Longitude: -158.4411 [Map]. In this case, the coordinates for Wood River have been provided by the Geographic Names Information System (GNIS).