This service uses data from the US Census and a supplementary list of cities around the world to find the latitude and longitude of two places, and then calculates the distance between them (as the crow flies). It also provides a map showing the two places, using the Xerox PARC Map Server.

 

Various query formats are allowed; for example:
 
Chicago, IL
Jakarta
40:26:26N 79:59:46W
Athens, Greece
 
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