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500 metres. World records. Men. David Rudisha 57.69 (2016) Women. Femke Bol 1:05.63 (2023) The 500 metres is an uncommon middle-distance running event in track and field and road running competitions.
The metre (or meter in US spelling; symbol: m) is the base unit of length in the International System of Units (SI). Since 2019, the metre has been defined as the length of the path travelled by light in vacuum during a time interval of 1 / 299 792 458 of a second, where the second is defined by a hyperfine transition frequency of caesium.
1.1 Structures (past or present) between 450 and 500 m (1,476 and 1,640 ft) 1.2 Structures (past or present) between 400 and 450 m (1,312 and 1,476 ft) 2 See also.
Li (unit) Li. (unit) Map of the eastern South China Sea from 1588; each grid square is 400 li (about 133 km or 80 miles). Li (Chinese: 里, lǐ, or 市里, shìlǐ), also known as the Chinese mile, [citation needed] is a traditional Chinese unit of distance. The li has varied considerably over time but was usually about one third of an English ...
The centimetre (SI symbol: cm) is a unit of length in the metric system equal to 10−2 metres ( 1 100 m = 0.01 m). To help compare different orders of magnitude, this section lists lengths between 10 −2 m and 10 −1 m (1 cm and 1 dm). 1 cm – 10 millimetres. 1 cm – 0.39 inches. 1 cm – edge of a square of area 1 cm 2.
List of motor yachts by length. M/Y Azzam, seen here in Cadiz, Spain, during the summer of 2020, is the world's longest luxury yacht. This list of motor yachts by length, is a table of the world's longest active superyachts, with an overall length of at least 75 metres (246 ft) and up. These boats are also known as "megayachts", "gigayachts ...
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]
Middle-distance running events are track races longer than sprints, ranging from 500 metres up to two miles (3218.688 metres). The standard middle distances are the 800 metres, 1500 metres and mile run, although the 3000 metres may also be classified as a middle-distance event. [1] The 1500 m came about as a result of running 3⁄ laps of a 400 ...