Two and a half
1973, along with the Triple Crown.
The fastest horse to win the Kentucky Derby was Secretariat (1973). The next fastest horse was Monarchos, who competed in 2001.
Of course , none other than the great Secretariat with the speed record at the Kentucky Derby of 1.59.40
Animal Kingdom won that Derby in 2:02.4 Secretariat's win was 1:59 4/5 Secretariat wins by nine lengths.
Only two horses have ever run the Kentucky Derby in under 2 minutes: Secretariat in 1973 and Monarchos in 2001.
Winning Colors was the last filly to win the Kentucky Derby.
The first jockey to win the Kentucky Derby was Oliver Lewis.