Miles per hour be used to express the speed of delivery of a ball in sporting events such as cricket, tennis and baseball. Miles per hour Miles per hour (abbreviated mph, MPH or mi/h) is an imperial and United States customary unit of speed expressing the number of statute miles covered in one hour. It is used in the United States, United Kingdom and many Commonwealth nations, particularly in the Caribbean region. Speed limits and road traffic speeds are given in miles per hour in the following jurisdictions (elsewhere kilometers per hour are used): Road traffic speeds in other countries are indicated in
Hour record attempts on 7 October 2017 and on 12 September 2018, broke Stevens' world record by 27 metres riding 48.007 km on 13 September 2018. The new regulations for the making of accepted hour record attempts were extended to para-cycling in 2016. Although the first attempt on the hour record for women after the amendments to the regulations was made by Paralympian Sarah Storey, it was not a ratified attempt on the women's C5 hour record under the new conditions, which at that point still did not extend to paracycling - albeit that Storey's effort is recognized as a best C5