Why do standard bred horses race and not thorough breeds?

Answer 1

Thoroughbred horses which originated in England are primarily bred for racing and are larger, heavier, taller and slimmer then a regular horse. They have a long and pointed head and face more health challenges then other horses.

Answer 2

it is called Thoroughbred, and they BOTH Race. Thoroughbreds, race Flats and Steeplechase. Standards race Harness.

Answer 3

because they are bread for it.