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). A minute is a unit of time equal to 1/60th of an hour and to 60 seconds. ... Earth (often referred to as The Earth) is the third planet in the solar system in terms of distance from the Sun, and the fifth in order of size. ... The equator is an imaginary circle drawn around a planet (or other astronomical object) at a distance halfway between the poles. ... metre or meter, see meter (disambiguation) The metre (in the U.S., chiefly meter) is a measure of length, approximately equal to 3. ... A foot (plural: feet) is any of several old units of distance or length, measuring around a quarter to a third of a meter. ...

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. A nautical mile is a unit of length. ... For the Brisbane bus routes known collectively as the Great Circle Line (598 & 599), see the following list of Brisbane Transport routes A great circle on a sphere A great circle is a circle on the surface of a sphere that has the same diameter as the sphere, dividing the...

The Danish and German geographical mile (mil and Meile respectively) is 4 minutes of arc, and was defined as approximately 7421.5 metres by the astronomer Ole Rømer of Denmark. In Norway and Sweden, this 4 minute geographical mile was mainly used at sea (sjømil), up to the beginning of the 20th century. Ole Rømer. ...

See also

• Medieval weights and measures for details of the geographical league of France
• conversion of units
• mile for the various other miles in use