Great Circle Mapper

Great circle mapper displays a map depicting the great circle path between locations and computes the distance along that path. A great circle path is the shortest path on the surface of a sphere between two points on that sphere. Technically, the term geodesic path should be used in this page since Earth is not a true sphere, but the great circle terminology is common usage. Locations may be FAA, IATA, or ICAO airport codes, or latitude and longitude.