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Metric prefixes; Text Symbol Factor or; yotta Y 10 24: 1 000 000 000 000 000 000 000 000: zetta Z 10 21: 1 000 000 000 000 000 000 000: exa E 10 18: 1 000 000 000 000 000 000: peta P 10 15: 1 000 000 000 000 000: tera T
Cross country running is a sport in which teams and individuals run a race on open-air courses over natural terrain such as dirt or grass. The course, typically 3–12 kilometres (1.9–7.5 mi) long, may include surfaces of grass and earth , pass through woodlands and open country, and include hills , flat ground and sometimes gravel road and ...
15.24 meters – width of an NBA basketball court (50 feet) 18.44 meters – distance between the front of the pitcher's rubber and the rear point of home plate on a baseball field (60 feet, 6 inches) [125] 20 meters – length of cricket pitch (22 yards) [126] 27.43 meters – distance between bases on a baseball field (90 feet)
The Bellin Run is a 10K (6.2-mile) race held annually on the east side of Green Bay, Wisconsin, just outside Bellin Memorial Hospital, the race's founding organization.The first Bellin 10K was held on June 12, 1977 and was known as the Bellin Heartwarming Run designed to promote cardiovascular fitness and wellness.
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. [95] The 880-yard run, or half-mile, was the forebear to the 800 m distance and it has its roots in competitions in the United Kingdom in the 1830s. [ 96 ]
On four race weekends in 1909 and 1910, a total of 82 automobile races were held, with lengths varying between 5 and 250 miles. Of these, 17 were of distance of 20 miles or more. [ 1 ] None of the short races served as a qualifying race, or "heat" race, for the longer events.
The world's longest certified footrace is the Self-Transcendence 3100 Mile Race. Many ultras have historical significance, including the Spartathlon, based on the 246 km run of Greek messenger Pheidippides from Athens to Sparta during the Battle of Marathon in a day and a half to seek aid against the Persians. [3] [4] [5]
as a ratio of one part rise to so many parts run. For example, a slope that has a rise of 5 feet for every 1000 feet of run would have a slope ratio of 1 in 200. (The word "in" is normally used rather than the mathematical ratio notation of "1:200".) This is generally the method used to describe railway grades in Australia and the UK.