Our distances are not driving distances, but are calculated as a 'straight-line' distance from Tetlin Junction. A straight line distance ignores obstructions like rivers, canyons, lakes, et cetera - it's truly a line drawn from Point A (ie- Tetlin Junction) to Point B.
Our distance measurements begin at a specific point in Tetlin Junction. The point that we are using is located at these GPS coordinates - Latitude: 63.3122, Longitude: -142.6017 [Map]. In this case, the coordinates for Tetlin Junction have been provided by the Geographic Names Information System (GNIS).