The 5000 metres is a popular running istance also known as a 5K or 5 km, colloquially "five-K" (equal to 3.107 miles). This distance is typical for running races; on road, on the track or cross-country. It is one of the track events in the Olympic Games and the World Championships in Athletics. 5000 metres refers to racing on a track and 5K means a roadrace or cross country event. While mainly run as an outdoor event, the 5000 m is sometimes run on an indoor track. Official records are kept for both outdoor and indoor 5000 m track events, but not for 5 km road races.