Editing Running (section)

====Middle distance====
{{Main|Middle-distance running}}
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.<ref>[http://www.britannica.com/EBchecked/topic/381174/middle-distance-running Middle-distance running]. ''[[Encyclopædia Britannica]]''. Retrieved 5 April 2010.</ref> The 880-yard run, or half-mile, was the forebear to the 800&nbsp;m distance and it has its roots in competitions in the United Kingdom in the 1830s.<ref name=IAAF800>[http://www.iaaf.org/community/athletics/trackfield/newsid=9389.html 800 m – Introduction]. [[IAAF]]. Retrieved 5 April 2010.</ref> The 1500&nbsp;m came about as a result of running three laps of a 500&nbsp;m track, which was commonplace in continental Europe in the 1900s.<ref name=IAAF1500>[http://www.iaaf.org/community/athletics/trackfield/newsid=9397.html 1500 m – Introduction]. [[IAAF]]. Retrieved 5 April 2010.</ref>