Measure distances on maps. Quick start: A course is the shortest line between two points. Move the map cursor to the desired start point and click there; or use the find box. Then, move to the next point and click again; or use the find box again. Continue choosing points until done. Pan and zoom the map if necessary to find each point. A circle is a line around a point. Choose the circle's center by clicking on the map; or use the find box. Move the cursor away from the center the desired distance, and click again; or, use the find box. More help...
Points on Earth: The closest point in the US to Africa The closest point in the US to Europe Point Nemo
Related projects: Sun Rise, Set, Noon cardrobot Picture Places When My PurpleAir