While other breeds like the Quarter Horse are known for their incredible speed over short distances, the Thoroughbred has consistently proven its ability to achieve high speeds over longer distances.
This is due to a combination of factors:
* Selective breeding: Thoroughbreds have been bred for speed and endurance for centuries.
* Physiological characteristics: They have a deep chest, long legs, and a powerful heart and lungs, all of which contribute to their ability to run fast for extended periods.
* Training: Thoroughbreds are often rigorously trained to optimize their speed and stamina.
However, it's important to note that individual horses within any breed can vary in speed, and environmental factors like track conditions and jockey skills also play a significant role in determining a horse's overall speed.