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The first world record in the men's 800 metres was recognized by the International Association of Athletics Federations in 1912. [1] As of June 21, 2011, 23 world records have been ratified by the IAAF in the event. [2] "y" denotes time for 880 yards (804.68 m) ratified as a record for the 800 m.
League (unit) A league is a unit of length. It was common in Europe and Latin America, but is no longer an official unit in any nation. Derived from an ancient Celtic unit and adopted by the Romans as the leuga, the league became a common unit of measurement throughout western Europe. Since the Middle Ages, many values have been specified in ...
The mile, sometimes the international mile or statute mile to distinguish it from other miles, is a British imperial unit and United States customary unit of length; both are based on the older English unit of length equal to 5,280 English feet, or 1,760 yards. The statute mile was standardised between the Commonwealth of Nations and the United ...
The 800 metres is run over two laps of an outdoor (400-metre) track and has been an Olympic event since the first modern games in 1896. During the winter track season the event is usually run by completing four laps of an indoor 200-metre track. The event was derived from the imperial measurement of a half mile (880 yards), a traditional ...
A nautical mile is a unit of length used in air, marine, and space navigation, and for the definition of territorial waters. [2] [3] [4] Historically, it was defined as the meridian arc length corresponding to one minute ( 1 / 60 of a degree) of latitude at the equator, so that Earth's polar circumference is very near to 21,600 nautical miles (that is 60 minutes × 360 degrees).
Contents. List of United States records in masters athletics. These are the current records in the various age groups of masters athletics for United States competitors. Starting at age 35, each age group starts on the athlete's birthday in years that are evenly divisible by 5 and extends until the next such occurrence.
nymil – New mile from 1889, 10 km exactly. Commonly used to this day, normally referred to as mil. mil – Mile, also lantmil. From 1699, defined as a unity mile of 18000 aln or 10.69 km. The unified mile was meant to define the suitable distance between inns. kyndemil – The distance a torch will last, approx 16 km
t. e. Earth's circumference is the distance around Earth. Measured around the equator, it is 40,075.017 km (24,901.461 mi). Measured passing through the poles, the circumference is 40,007.863 km (24,859.734 mi). [1] Measurement of Earth's circumference has been important to navigation since ancient times. The first known scientific measurement ...