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Many countries around the world have their own ultrarunning organizations, often the national athletics federation of the country, or are sanctioned by such national athletics organizations. 50-kilometer and 100-kilometer races are recognized as World Records by World Athletics, the world governing body of track and field. [16]
Full recovery is reached within three months. The fitter the runner, the less the effect. The runners with decreased left ventricle function had an average peak weekly training distance of 55.1 km (34.2 mi), while those who did not averaged 69.1 km (42.9 mi). The marathon was held in 35 °C (95 °F) weather.
The backyard ultra or last one standing is a form of ultramarathon race where competitors must consecutively run the distance of 6.706 kilometres (4.167 mi) in less than one hour, which is a pace of 100 miles per 24 hours. The race is over when only one runner remains to complete a lap.
While there are debates around the accuracy of this historical legend, [16] whether Pheidippides ran from Marathon to Athens or between other cities, how far this was, and if he was the one to deliver the victory message, [17] the marathon running event of 26.2 miles / 42.195 km is based on this legend.
In road events, the course is not required to be a circuit, but the overall decrease in elevation between the start and finish shall not exceed 1:1000, i.e. 1 m/km. In road events, the start and finish points of a course, measured along a theoretical straight line between them, shall not be further apart than 50% of the race distance.
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]
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The 25K run (25 kilometers, approximately 15.52 miles) is a long distance running footrace that is between the distance of a half marathon and a marathon.It was formerly an official world record distance in road running by World Athletics, [1] but has since been downgraded to world best status.