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The 20K run (20 kilometres, or approximately 12.4 miles) is a long distance foot race. It is a rarely held race that is not recognized as an Olympic event. The event held IAAF world championship status in 2006 only, when the existing IAAF World Half Marathon Championships briefly hosted the shorter distance.
Race time prediction formula, running course certification. Peter Riegel (January 30, 1935 – May 28, 2018) was an American research engineer who developed a mathematical formula for predicting race times for runners and other athletes given a certain performance at another distance.
The 20,000 metres (approximately 12.43 mi or 65,617 ft) is a rarely contested long-distance running event in track and field competitions; most world records in the event have been set during half marathons and one-hour races, as a half marathon is roughly 21,000 meters.
The 20,000 metres race walk is a racewalking event. The event is competed as a track race. Athletes must always keep in contact with the ground and the supporting leg must remain straight until the raised leg passes it. 20,000 metres is 12.4274 miles.
In running events up to 200 m in distance and in horizontal jump events, wind assistance is permitted only up to 2.0 m/s. In decathlon or heptathlon, average wind assistance of less than 2.0 m/s is required across all applicable disciplines; and maximum of 4.0 m/s in any one event. As an exception, according to rule 36.2, specific event ...
The original race distance was 20.3 km, but this was reduced to 20 km in 1981. As a result of poor race organisation at the starting point, athlete's times from 1981 to 1992 are not accepted for record purposes; unusually quick times were recorded as some runners began the race a whole minute before the official starter's gun had been fired.
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It was renamed the IAAF World Road Running Championships in 2006 and reduced in distance to a 20K run, but reverted to the half marathon distance the following year and to the original competition name the year after that. The competition was renamed to its current title in 2020 after the governing body rebranded itself moving away from the ...