This script calculates distances, bearing and more between the two Latitude/Longitude points. (for coordinates use any of the shown formats)
START Point - Lat 1: Long 1:
END Point - Lat 2: Long 2:
Given a START point, initial BEARING, and DISTAANCE, this will calculate the END (destination) point
This tool is for manual (or as a algorithm concept for automated) editing of KML files for Google Maps orGoogle Earth, and you can see it on a map (thanks to the nice guys at Google Maps) and explained by original author at © MTL.