Editing Hurdling (section)

==Height and spacing==
There are five hurdle heights on most standard hurdles. The highest position (sometimes "college high" or "open high") is used for men's sprint hurdle races (60m and 110m), which are {{convert|42|in|cm|1}}.  The next highest, (sometimes "high school high"<ref name="hurdles101" />
) {{convert|39|in|cm|1}} is used by veteran men under age 50, and younger boys.  The middle position of 36 inches (91.44&nbsp;cm), (sometimes "intermediate") which is used for men's long hurdle races (400m) plus some [[youth athletics|youth]] and veteran age divisions.  The next lower position, {{convert|33|in|cm|1}},  is called the "women's high"<ref name="hurdles101" /> used for women's short hurdle races. The lowest position, called the "low hurdle", is {{convert|30|in|cm|1}} and is used for women's long hurdles plus many youth and veteran races.  Some races call for {{convert|27|in|cm|1|disp=or}} for youth or veteran events.<ref name="Regeländringar tävlingssäsongen 2014">{{cite web | url=http://www.friidrott.se/Regler/nytt14.aspx | title=Regeländringar tävlingssäsongen 2014 | work=Svensk Friidrott | access-date=December 3, 2013 | archive-date=April 13, 2021 | archive-url=https://web.archive.org/web/20210413191334/https://www.friidrott.se/Regler/nytt14.aspx | url-status=dead }}</ref> Hurdles that go to this position are rare and are notable by having a sixth position.<ref name="hurdles101" />

[[File:Hurdling.jpg|thumb|282px|left|A sequence of hurdling]]

In sprint hurdle races for men, regardless of the length of the race, the first hurdle is {{convert|13.72|m|ft|0|abbr=on}} from the starting line and the distance between hurdles is {{convert|9.14|m|ft|0|abbr=on}}.  In sprint hurdle races for women, the first hurdle is {{convert|13|m|ftin|abbr=on}} from the starting line and the distance between hurdles is {{convert|8.5|m|ftin|abbr=on}}.  In long hurdle events, whether for men or women, the first hurdle is {{convert|45|m|ftin|abbr=on}} from the starting line and the distance between hurdles is {{convert|35|m|ftin|abbr=on}}.  Most races which are shorter than the standard distance (such as indoor races) are simply run over fewer hurdles but use the same distances from the starting line.<ref name="hurdles101">{{cite web |url=http://www.trackinfo.org/hurdles101.html |title=Trackinfo Hurdles 101 |website=trackinfo.org}}</ref> There are variations on hurdle height and spacing for the age groups of athletes competing.  See [[Masters athletics (track and field)]] and Youth athletics.<ref>The specifications for those variations are enumerated in the rule amendments for those divisions and are explained [http://www.trackinfo.org/hurdles101.html on this website].</ref>