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The 1000 metres, 1 kilometer run, or 1K run is an uncommon middle-distance running event in track and field competitions. It consists of two and a half laps around an outdoor 400 m track, or five laps around an indoor 200 m track. The 1000 yards, an imperial alternative, was sometimes also contested. [1] [2]
The imperial distance was contested until 1983, while the 1000 meters was run for 4 years from 1984 to 1987 before the event was discontinued. In 1986 and 1987, the 1 ⁄ 10-mile track in Oklahoma City was short by 25 inches (640 mm) per lap, causing the actual race distance to be less than 1000 meters. [1]
A milliradian (SI-symbol mrad, sometimes also abbreviated mil) is an SI derived unit for angular measurement which is defined as a thousandth of a radian (0.001 radian). ). Milliradians are used in adjustment of firearm sights by adjusting the angle of the sight compared to the barrel (up, down, left, or
This distance is not commonly raced, though it is more common than the 500 m event is for sprinters. This is commonly raced as an indoor men's heptathlon event, or as an indoor high school event. In 1881, Lon Myers set what was then a world record at 1000 yards, running it in 2:13.0. [4]
For example, in 1980, high schools converted their running distances from Imperial (yards) to metric, but instead of running conventional international distances like 1500 metres in place of the mile run, a more equitable but non-standard 1600 meters was chosen. For the two-mile run, they run 3200 meters.
Wohlhuter was the U.S. national champion for the 800 meters in 1973 and 1974 and was ranked #1 in the world both years by Track & Field News. Also in 1974, Wohlhuter won the first of three indoor 1000 yard U.S. national titles, set a world record in the 880 yards at 1:44.10 (1:43.5 at 800 meters), [ 4 ] and a world record in the 1000 meter ...
The basic unit of length in the imperial and U.S. customary systems is the yard, defined as exactly 0.9144 m by international treaty in 1959. [2] [5] Common imperial units and U.S. customary units of length include: [6] thou or mil (1 ⁄ 1000 of an inch) inch (25.4 mm) foot (12 inches, 0.3048 m) yard (3 feet, 0.9144 m)
To help compare different orders of magnitude, this section lists lengths between 10 −3 m and 10 −2 m (1 mm and 1 cm). 1.0 mm – 1/1,000 of a meter; 1.0 mm – 0.03937 inches or 5/127 (exactly) 1.0 mm – side of a square of area 1 mm²; 1.0 mm – diameter of a pinhead; 1.5 mm – average length of a flea [27]