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Short-course meter competitions are also denoted by listing of the actual meter distance: "25m" (in swimming, a space is not placed between the number and the m for meter). [ 5 ] Lists of world and other records are kept separately for short- and long-course events; the short-course time is usually faster than the long-course record for the ...
The British swimming champions in the relays, formerly the (Amateur Swimming Association (ASA) National Championships) are listed below. [1] [2] The events were originally contested over yards and then switched to the metric conversion of metres in 1971.
The British swimming champions over 1500 metres freestyle, formerly the (Amateur Swimming Association (ASA) National Championships) are listed below. [1] [2]The event was originally contested over the mile and then 1,650 yards and then switched to the metric conversion of 1,500 metres in 1971.
The micrometre (SI symbol: μm) is a unit of length in the metric system equal to 10 −6 metres ( 1 / 1 000 000 m = 0. 000 001 m). To help compare different orders of magnitude , this section lists some items with lengths between 10 −6 and 10 −5 m (between 1 and 10 micrometers , or μm).
A number of competitions in the individual medley are regularly contested, by both men and women. The competitions are limited in that every distance must consist of either four lengths of the pool (100-yard or -meter) or a multiple of four lengths (200- or 400-yard/- meter), so that no stroke must change mid-length.
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]
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Freestyle races are the most common of all swimming competitions, with distances beginning with 50 meters (55 yards) and reaching 1,500 meters (1,600 yards), [2] also known as the mile. The term 'freestyle stroke' is sometimes used as a synonym for ' front crawl ', [ 3 ] as front crawl is the fastest surface swimming stroke. [ 4 ]