Secretariat
1:59.4 was he fastest and was a record set by Secretariat "The Greatest Horse That Ever Lived" at the Kentucky Derby.
Secretariat was the fastest horse that ever lived
Secretariat set the current record in 1973 with a time of 1:59.40. To this day it is still the track record, and Derby record.
The Kentucky Derby
The Kentucky Derby did not begin until 1875.
Giacomo won the Kentucky Derby in 2005.
The Kentucky Derby is a race for Thoroughbreds.
The Kentucky Derby is a Thoroughbred horse racing event.
The first gray horse to win the Kentucky Derby was Determine in 1954.
You will not see a Paint horse in the Kentucky Derby. The Derby is for Thoroughbreds only. A Paint is a spotted horse with Quarter Horse and Thoroughbred bloodlines.
Horse 'Secretariat' won the Derby in 1973.
If you are talking about the Kentucky Derby, the horse was Jet Pilot.