The Kentucky Derby is a race for Thoroughbreds.
Equus caballus. The breed is the Thoroughbred.
The Kentucky Derby
The first Kentucky Derby race was run in 1875.
The "sister race" for the Kentucky Derby is the Kentucky Oaks. The Oaks is a mile-and-an-eighth race is for 3-year-old fillies. It is held the Friday before the Derby.
By 'Kentucky Horse Race' I'll assume you mean Kentucky Derby as there are hundreds of races in Kentucky. The Derby is a mile and one fourth in length.
Yes the Kentucky Derby is the largest horse race in the world and it is also the oldest.
The ancestry of the modern thoroughbred traces back to three main sires. The Darley Arabian, the Godolphin Arabian, and the Byerly Turk.
The Kentucky Derby is held annually in Louisville, Kentucky, which is in the Eastern Time Zone.
The 2014 Kentucky Derby was the 140th running of the race.
The first Kentucky Derby was held in 1875.