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.
40-yard dash Auburn's Bo Jackson claims to have run a 40-yard dash with a time of 4.13 s.[6][7] A time of 4.18 run by Jackson within the same week added some support to the legitimacy of the times.[8][9] Texas Tech's Jakeem Grant was hand-timed by a New Orleans Saints scout as running a 4.10 in 2016, potentially beating Jackson's record.[10] Deion Sanders ran a 4.27-second 40-yard dash in 1989.[11]