Our distances are not driving distances, but are calculated as a 'straight-line' distance from Grant Creek. A straight line distance ignores things like rivers, canyons, lakes, et cetera - it's truly a line drawn from Point A (ie- Grant Creek) to Point B.
Our distance measurements begin at a specific point in Grant Creek. The point that we are using is located at these GPS coordinates - Latitude: 65.1975, Longitude: -152.9272 [Map]. In this case, the coordinates for Grant Creek have been provided by the Geographic Names Information System (GNIS).