Unfortunately, we don't know of an official website for Long Valley. If you can help, please contact us through our Feedback Page.
The official website for State of South Dakota: sd.gov/
Our distances are not driving distances, but are calculated as a 'straight-line' (or point-to-point) distance. A straight line distance ignores obstructions like rivers, canyons, lakes, et cetera - it's truly a line from Point A (ie- Long Valley) to Point B.
Our distance measurements begin at a specific point in Long Valley. The point we use is located at these GPS coordinates - Latitude: 43.4617, Longitude: -101.4949 In this case, the coordinates for Long Valley have been provided by the Geographic Names Information System (GNIS).