* Top speed: A gazelle is generally faster than a horse in a short sprint. The Thomson's gazelle can reach speeds of up to 70 km/h (43 mph), while a racehorse can achieve speeds up to 69 km/h (43 mph). However, some types of gazelles are slower, and some horses (like thoroughbreds) can be a bit faster.
* Sustained speed: A horse can maintain a faster speed for a longer period of time than a gazelle. Gazelles are built for short bursts of speed to escape predators, while horses can run for longer distances.
So, while a gazelle might be slightly faster in a short sprint, a horse can maintain a faster speed for a longer duration.