Unfortunately, we don't know of an official website for Gardena. If you can help, please contact us through our Feedback Page.
The official website for State of North Dakota: www.nd.gov/
Our distances are not driving distances, but are calculated as a 'straight-line' distance. A straight line distance ignores obstructions like rivers, canyons, lakes, et cetera - it's truly a line from Point A (ie- Gardena) to Point B.
If you need the driving distance, we recommend that you use one of the Mapping Services listed on our Map Page for Gardena. Since we usually use Google Maps for our own planning, we've provided the following link for your convenience: Google Map and Driving Directions starting from Gardena
Our distance measurements begin at a specific point in Gardena. The point we use is located at these GPS coordinates - Latitude: 48.7011, Longitude: -100.4985 In this case, the coordinates for Gardena have been provided by the Geographic Names Information System (GNIS).