Geographical mile
The geographical mile is a unit of length determined by 1 minute of arc along the Earth's equator, approximately equal to 1855 metres (6087.15 international feet).
The unit is not used much; it is closely related to the nautical mile, which was originally determined as 1 minute of arc along a great circle of the Earth and is nowadays defined to be exactly 1852 metres (6076.1 feet).
The German geograpical mile (Meile) is 7421.5 meters, see historical weights and measures.
See mile for the various other miles in use, and also conversion of units.