who has run the most sub 4 minute miles
Four-minute mile New Zealand's John Walker, the first man to run the mile under 3:50, ran 135 sub-four-minute miles during his career (during which he was the first person to run over 100 sub-four-minute miles), and American Steve Scott has run the most sub-four-minute miles, with 136. Algeria's Noureddine Morceli was the first under 3:45. Currently, the mile record is held by Morocco's Hicham El Guerrouj, who ran a time of 3:43.13 in Rome in 1999.
100 metres The 10-second barrier has historically been a barometer of fast men's performances, while the best female sprinters take eleven seconds or less to complete the race. The current men's world record is 9.58 seconds, set by Jamaica's Usain Bolt in 2009, while the women's world record of 10.49 seconds set by American Florence Griffith-Joyner in 1988 remains unbroken.