There's no specifics for a horse racing track. Horse race track dimensions vary according to the style of racing, the distances and the type of events as per the country's racing code.
The dimensions of a horse racing "track" (not field) varies from venue to venue. A "field" is the horses in the race (at least two horses, naturally).
It depends on the track. There is no standard.
A normal racing track is a mile.
middle of track
a horse who does well on a muddy track
chanclorville thing
Flamingo
There is Golden Gate Fields, which is a horse racing track, but that is in Oakland, which is not far from San Francisco.
It opened in 1864.
Great Leighs racing track is situated in a village in the county of Essex,England.
You race around a track in a horse and cart
Usually none.