Which colour horse is the fastest runner?

There's no scientific evidence to support the idea that a horse's color determines its speed.

Horse speed is influenced by factors such as:

* Breed: Thoroughbreds and Quarter Horses are known for their speed.

* Genetics: Individual horses inherit traits that contribute to speed, like muscle composition, cardiovascular system efficiency, and stride length.

* Training and Conditioning: Proper training and conditioning are crucial for developing a horse's speed potential.

* Diet and Nutrition: A balanced diet provides the energy and nutrients needed for optimal performance.

In short, a horse's color has absolutely no bearing on its speed.