The distance between them will appear just above the map in both miles and kilometers. When the red balloon appears tap on the information about the location at the bottom of your display. From there move the bulls eye again and once its centered over the third location youll see the cumulative distance between the first second and third dot you added.
Click anywhere on the map to create a path to measure.
Very simple to use its completely free. Rotate the balloon down until you are looking at Iceland and hold it out at arms length. From there move the bulls eye again and once its centered over the third location youll see the cumulative distance between the first second and third dot you added. The string will rise up the balloon forming a curve that is the shortest distance between the two points.