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On 25 July 2013, FINA Technical Swimming Congress voted to allow world records in the long course mixed 400 free relay and mixed 400 medley relay, as well as in six events in short course meters: the mixed 200 medley and 200 free relays, as well as the men's and women's 200 free relays and the men's and women's 200 medley relays. [6]
A metric mile is a colloquial term used in some countries for the 1500 meters, the premier middle distance running event in international track and field. The term 'metric mile' (0.93 statute miles) was applied to this distance because it approximates one statute mile (1609.344 m). [1] The term is most commonly used in track running, speed ...
Lunar distance (LD), the distance from the centre of Earth to the centre of the Moon, is a unit of measure in astronomy. The lunar distance is approximately 384,400 km (238,900 mi), or 1.28 light-seconds; this is roughly 30 times Earth's diameter. A little less than 400 lunar distances make up an astronomical unit .
There are nine competitions used in freestyle swimming, both using either a long time (50 meter) or a short time (25 meter) pool. The United States also employs short time yards (25 yard pool). In the United States, it is common for swimmers to compete in a 25-yard pool during the Fall, Winter, and Spring, and then switch over to a 50-meter ...
Short course. In competitive swimming, the term short course (abbreviated SC) is used to identify a swimming pool that is 25 metres (27.34 yd) in length. The term is also often included in meet names when conducted in a short course pool. "Short course" is the second type of pool configuration currently recognized by World Aquatics and other ...
Of the 35 pool-based events, swimmers from the United States hold fifteen records, Australia five, France four, China, Canada and South Africa two each, and one each to Ireland, Great Britain, Russian Olympic Committee, Hungary, and Sweden. Nineteen of the current Olympic records were set at the 2024 Summer Olympics, seven in 2020, five in 2016 ...
Common swimming pool dimensions are 25-yard, 25-meter, and 50-meter. The Olympic-size swimming pool is specified solely in meters. High schools and the NCAA conduct 25-yard competitions. USA Swimming (USA-S) swims in both metric and non-metric pools. [citation needed]
The world record in the men's 50 yards freestyle is not an official record ratified by World Aquatics (previously FINA), which only recognizes records set in meters. . Practically, the unofficial world record is now limited today to swimmers competing in the United States, as short course races in yards are only currently used for record keeping in the Unit