Middle distance running events are track races longer than sprints, up to 3000 metres. The standard middle distances are the 800 metres, 1500 metres and mile run, although the 3000 metres may also be classified as a middle distance event. The 880 yard run, or half mile, was the forebear to the 800 m distance and it has its roots in competitions in the United Kingdom in the 1830s. The 1500 m came about as a result of running three laps of a 500 m track, which was commonplace in continental Europe in the 20th century.

This middle distance length is rather uncommon, and is mainly run by sprinters wishing to test their endurances at a longer distance. Like other middle distance races, it evolved from the 600 yard race. The 600 m is also used as an early season stepping stone by 800 m runners before they have reached full race fitness. The record at this distance is for men:

For women:

The 800 m consists of two laps around a standard 400 m track, and has always been an Olympic event. In 1882, American Lon Myers set what was then a world record at 800 m, running it in 1:44.4. It was included in the first women's track programme in 1928, but suspended until 1960 because of shock and the exhaustion it caused the competitors. Without the benefits of modern training, men of the era were, in contrast, expected to run themselves to complete exhaustion during competitions^{[citation needed]}.