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Great Circle Mapper
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Simple and easy great circle maps
The Great Circle Mapper began in 1996 as a free tool for visualizing the shortest path between airports around the globe, commonly known as the great circle path, and for computing the distance along this path. A comprehensive database containing nearly 38,000 airports and other facilities allows users to generate maps using nearly any airport in the world. Over 60 million maps per year are served to a diverse user community including airlines, charter operators, aircraft manufacturers, military and other government agencies, pilots, frequent fliers, and schools.