The Standardbred is an American horse breed best known for its ability in harness racing where they compete at either a trot or pace. Developed in North America, the Standardbred is recognized worldwide, and the breed can trace its bloodlines to 18th-century England.
Standardbreds are generally well-muscled and similar to, but a bit heavier than, a Thoroughbred. Most often they present as a bay, and less frequently brown, black, chestnut, gray or roan. Standardbreds are considered easy-to-train horses with a willing submissive nature.