The only age at which any hosrse can run in th KY Derby is 3 (three) yrs old, as is the case with the other two Triple Crown races--the Preakness Stakes and the Belmont Stakes.
Secretariat's time at the Kentucky Derby was 1 minute, 59 seconds and 2/5.
Secretariat.
secretariat
Horse 'Secretariat' won the Derby in 1973.
The fastest Kentucky Derby ever was run by Secretariat.
Secretariat
May 5th, 1973.
Angle Light.
May 7, 2005 was the date on which the 131st Kentucky Derby was held. The winning horse was Giacomo [foaled February 16, 2002]. The winning jockey was Michael Earl Smith [b. August 10, 1965]. The winning time was 2 minutes 02.75 seconds.
Animal Kingdom won that Derby in 2:02.4 Secretariat's win was 1:59 4/5 Secretariat wins by nine lengths.
Secretariat
secretariat