when did the 4 minute mile get broken
Four-minute mile Breaking the four-minute barrier was first achieved on 6 May 1954 at Oxford University's Iffley Road Track, by Englishman Roger Bannister,[4] with the help of fellow-runners Chris Chataway and Chris Brasher as pacemakers.[5]
Kentucky Derby The fastest time ever run in the Derby was set in 1973 at 1:59.4 minutes when Secretariat broke the record set by Northern Dancer in 1964. Not only has Secretariat's record time yet to be topped, in the race itself, he did something unique in Triple Crown races: each successive quarter, his times were faster. Though times for non-winners were not recorded, in 1973 Sham finished second, two and a half lengths behind Secretariat in the same race. Using the thoroughbred racing convention of one length equaling one-fifth of a second to calculate Sham's time, he also finished in under two minutes. Another sub-two-minute finish, only the third, was set in 2001 by Monarchos at 1:59.97.[11]