The answer is HorseRace 400
The name of the first horse to win a race is debated, as horse racing has a long history spanning many cultures. One of the earliest recorded examples is the horse Potoooooooo, owned by the Earl of Abingdon and a successful racehorse in 1773.
Eohippus .
Seventeen is the most letters allowed in a race horse's name in the U.S.
Monocky is the name of a race horse.
Truxton race horse
Pimlico Race Course in Baltimore, Maryland on the 3rd Saturday in May
This is the show horse. Win, place and show.
Barbaro is a famous race horse.
The earliest horse, a forest dweller, had 5 toes.
cheltnam
Impost.
it is the name of a famous race horse. A movie was made about this horse.