This file capdist.csv contains the great circle distance between capital cities in the kilometers for all states in the file latlong.csv, which contains the latitude and longitude of the capital cities.

As a courtesy to people who have somehow failed to realize that the metric system is 10 times better the file also contains distances in miles. (The imperial system is currently used in only three countries, the USA, Myanmar, and Liberia.)

The capdist.csv data can be generated from latlong.csv with the perl program capdist.pl

For the country identifiers used in these data, see the list of independent states.

People interested in these data may also wish to consult the more recent Cshapes project, which provides historical maps and an R package to perform various useful operations on the GIS maps, including calculating minimum distances between states