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Running is often measured in terms of pace, [54] expressed in units of minutes per mile or minutes per kilometer (the inverse of speed, in mph or km/h). Some coaches advocate training at a combination of specific paces related to one's fitness to stimulate various physiological improvements.
Since 2019 runners over the age of 20 qualify when they are able to complete an officially recognised marathon (42.2 km) in under 4:50 (5 hours before 2019). [8] During the event an athlete must also reach five cut-off points in specified times to complete the race. [ 1 ]
It translates to an average speed of 15 miles per hour (24 km/h). [1] It is a standard of professional middle-distance runners in several cultures. The first four-minute mile is usually attributed to the English athlete Roger Bannister, who ran it in 1954 at age 25 in 3:59.4. [2] The mile record has since been lowered by 16.27 seconds.
The district headquarter is situated in Sonipat. Other smaller towns are Gohana, Ganaur, Mundlana, Kharkhoda and Rai. The total area of Sonipat district is 2,260 km 2 and its population is 10,64,000. Sonipat is bordered by the states of Delhi and Uttar Pradesh as well as the districts of Rohtak, Jind and Panipat.
About 158.27 miles (254.71 km) of shoreline are on Tampa Bay. The county's unincorporated area is around 888 square miles (2,300 km 2), more than 84% of the total land area. Municipalities account for 163 square miles (420 km 2). The modern boundaries of the county place it midway along the west coast of Florida. [citation needed]
The population density was 268 inhabitants per square mile (103/km 2). There were 1,119 housing units at an average density of 122 per square mile (47/km 2 ). The racial makeup of the city was 58.6% White , 36.9% Black or African American , 0.3% Native American , 0.2% Asian , 0.0% Pacific Islander , 1.5% from other races , and 2.6% from two or ...
The population of the United Kingdom was estimated at 67,596,281 in 2022. [1] It is the 21st most populated country in the world and has a population density of 279 people per square kilometre (720 people/sq mi), with England having significantly greater density than Wales, Scotland, and Northern Ireland. [1]
Early on, he sent wireless signals over a distance of one and a half miles. In December 1901, he sent wireless waves that were not affected by the curvature of the Earth. Marconi later transmitted the wireless signals across the Atlantic between Poldhu, Cornwall , and St. John's, Newfoundland , a distance of 2,100 miles (3,400 km).