Middle-distance running refers to races that are longer than sprints but shorter than long-distance runs. Synonyms for middle-distance running include mid-distance, intermediate-distance, and medium-distance running. Other terms that may be used to describe this type of running include middle-distance track events, middle-distance races, or middle-distance athletics. The middle distance is generally considered to be between 800m and 1500m, but this can vary depending on the context. In general, middle-distance running requires a combination of speed and endurance, as athletes must maintain a sustained effort for a longer period of time than sprints but cannot rely solely on their aerobic capacity like long-distance runners.