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Determine Distance Between Any Two Locations

By kgayda,

This function allows you to calculate the distance in miles or kilometers between any two points on the earth. I created to calculate the distance between two zip codes but is can be used for any two coordinates for which latitude and longitude is known.

NOTE: A database for the coordinates of any US postal code can be obtained for free from Source Forge in CSV format. The URL is http://prdownloads.sourceforge.net/zips/zips.csv.zip?download

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