They don't really have a name for a group of race horses as far as I know. Cause generally when racing, they compete against each other. And it's a solo race for the win. So there is no association with the other horses, like for example a team of Basketball players.
There is no real name for a pack of race horses or a herde of race horses, or horde of race horses..............
A Race
Race Program
there is no particular race that 3 horses race in. there are more than 3 horses in a race which name is unmentionable figure it out by yourself i am not your mother don't even dare to improve this honest answer i have written i know i am cool
A 'herd' is a group of horses.
A herd
They are most famous for the Quarter-mile race, the race they get their name from.
A group of wild horses can be called a field, a herd, a set and also a remuda.
a group of horses is called a herd, and a male horse is a stallion
bryer is a very famous colletible horse group and they have over 100 horses
A group of horses, whether they are family or not are always called a herd.
The place where horses parade prior to the race is called the "paddock." In the paddock, horses are shown to the public and can be observed by owners, trainers, and bettors before the race begins. This area allows spectators to assess the horses' condition and demeanor before placing their bets.
Stud