Horse's pace is a term used to describe the speed and manner in which a horse moves. The two most common gaits of a horse are the GAIT and the TROT. The GAIT is a four-beat lateral movement in which the horse moves its legs in diagonal pairs, with the outside leg leading. The TROT is also a four-beat GAIT, but it is a two-beat diagonal movement in which the inside leg leads. Both gaits are used for riding and racing horses, and they can be used to measure the speed of a horse.