Our distances are not driving distances, but are calculated as a 'straight-line' (or point-to-point) distance from Montana Creek. A straight line distance ignores things like rivers, canyons, lakes, et cetera - it's truly a line from Point A (ie- Montana Creek) to Point B.
Our distance measurements begin at a specific point in Montana Creek. The point that we are using is located at these GPS coordinates - Latitude: 62.0686, Longitude: -150.0650 [Map]. In this case, the coordinates for Montana Creek have been provided by the Geographic Names Information System (GNIS).