Standardbred horses are a breed known for their speed and endurance, primarily used in harness racing. They typically stand between 14.2 and 16.2 hands high and have a muscular build, which contributes to their athleticism. Their temperament is generally calm and friendly, making them suitable for various equestrian activities. Originating in the United States in the 19th century, Standardbreds are descendants of Thoroughbreds and Morgan horses. They are recognized for their unique gait, particularly the "trot" and "pace," which are essential for racing. Standardbreds are also popular in recreational riding and driving due to their versatility.