Harness racing Harness racing Harness racing is a form of horse racing in which the horses race at a specific gait (a trot or a pace). They usually pull a two-wheeled cart called a sulky, occupied by a driver, although in Europe, jockeys riding directly on saddled trotters ("trot monté" in French) is also conducted. In North America, harness races are restricted to Standardbred horses, although European racehorses may also be French Trotters or Russian Trotters, or have mixed ancestry with lineages from multiple breeds. Orlov Trotters race separately in Russia. The light cold-blooded Coldblood trotters and Finnhorses race separately in Finland,
Horses in the Middle Ages their hindquarters. Harnessed in such a manner, horse teams could pull no more than 500 kg. The breastplate-style harness that had flat straps across the neck and chest of the animal, while useful for pulling light vehicles, was of little use for heavy work. These straps pressed against the horse's sterno-cephalicus muscle and trachea, which restricted breathing and reduced the pulling power of the horse. Two horses harnessed with a breastcollar harness were limited to pulling a combined total of about . In contrast, the horse collar rested on horses' shoulders and did not impede breathing. It allowed a horse