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((Short description|Group of track and field events))
((distinguish|hurling))
((About|the track and field event|the equestrian form|Hurdling (horse race)))
[[File:Leichtathletik Gala Linz 2018 men´s 110m hurdles Okafor-6401.jpg|thumb|Leon Okafor of Austria runs a hurdle at a 2018 event in [[Linz]].|alt=A man with a goatee and tightly cropped hair wearing a blue tank top and white shorts faces the camera with mouth open at medium range. He has his right leg, sole of the shoe visible, extended over a narrow strip of wood painted in regular black and white stripes supported by circular metal bars at the bottom of the frame while his left leg, behind the wood, can be seen to the knee. On his chest is a piece of paper with "OKAFOR" printed on it.]]

'''Hurdling''' is the act of jumping over an obstacle at a high speed or in a sprint.<ref name="britannica.com">((Cite news|url=https://www.britannica.com/sports/hurdling|title=hurdling ((!)) athletics|newspaper=Encyclopedia Britannica|language=en|access-date=2017-02-01))</ref> In the early 19th century, [[hurdle]]rs ran at and jumped over each hurdle (sometimes known as 'burgles'), landing on both feet and checking their forward motion. Today, the dominant step patterns are the 3-step for high hurdles, 7-step for low hurdles, and 15-step for intermediate hurdles. Hurdling is a highly specialized form of [[obstacle racing]], and is part of the sport of [[athletics (sport)|athletics]]. In hurdling events, barriers known as [[hurdle]]s are set at precisely measured heights and distances. Each athlete must pass over the hurdles;<ref name="The Hurdles Book">((cite book | title=The Hurdles, Contemporary Theory, Technique and Training | article=Hurdling Is Not Sprinting | publisher=Track & Field News | editor1-last=Jarver | editor1-first=Jess | last1=McDonald | first1=Craig | year=2004 | pages=12–52 | isbn=978-0-911521-67-2))</ref><ref name="The Hurdles2">((cite book | title=The Hurdles, Contemporary Theory, Technique and Training | article=Towards Better Hurdling | publisher=Track & Field News | editor1-last=Jarver | editor1-first=Jess | last1=Longden | first1=Bruce | year=2004 | pages=52–55 | isbn= 978-0911521672))</ref><ref>((cite web |url=http://www.legacy.usatf.org/groups/officials/files/resources/rules/IAAF-Rule-Book-2012-2013.pdf |title=Competition Rules 2012–2013 |publisher=International Association of Athletics Federations |pages=161–162))</ref> passing under or intentionally knocking over hurdles will result in disqualification.

Accidental knocking over of hurdles is not cause for disqualification, <ref name="IAAFrb">((cite web |url=http://www.legacy.usatf.org/groups/officials/files/resources/rules/IAAF-Rule-Book-2012-2013.pdf |title=Competition Rules 2012–2013 |publisher=International Association of Athletics Federations |pages=161–162))</ref> but the hurdles are weighted to make doing so disadvantageous.<ref name="IAAFrb" /><ref name="britannica.com" />  In 1902 Spalding equipment company sold the Foster Patent Safety Hurdle, a wood hurdle.  In 1923 some of the wood hurdles weighed ((cvt|16|lb)) each. Hurdle design improvements were made in 1935, when they developed the L-shaped hurdle. With this shape, the athlete could hit the hurdle and it will tip down, clearing the [[athlete]]'s path. The most prominent hurdles events are [[110-metre hurdles|110 meters hurdles]] for men, [[100-metre hurdles|100 meters hurdles]] for women, and [[400 meters hurdles]] (both sexes) – these three distances are all contested at the [[Athletics at the Summer Olympics|Summer Olympics]] and the [[World Athletics Championships]]. The two shorter distances take place on the straight of a [[running track]], while the 400&nbsp;m version covers one whole lap of a standard oval track. Events over shorter distances are also commonly held at indoor track and field events, ranging from [[50 meters hurdles]] upwards. Women historically competed in the [[80 meters hurdles]] at the Olympics in the mid-20th century. Hurdles race are also part of [[Combined track and field events|combined events]] contests, including the [[decathlon]] and [[heptathlon]].<ref>((cite web |url=http://www.legacy.usatf.org/groups/officials/files/resources/rules/IAAF-Rule-Book-2012-2013.pdf |title=Competition Rules 2012–2013 |publisher=International Association of Athletics Federations |page=214))</ref>

In track races, hurdles are normally ((cvt|68|–|107|cm|in)) in height, depending on the age and sex of the hurdler.<ref name="The Hurdles">((cite book | title=The Hurdles, Contemporary Theory, Technique and Training | publisher=Track & Field News | author=Jarver, Jess| year=2004 | pages=9, 63 | isbn=978-0911521672))</ref> Events from 50 to 110 meters are technically known as high hurdles races, while longer competitions are [[low hurdles]] races. The track hurdles events are forms of [[sprint (running)|sprinting]] competitions, although the 400&nbsp;m version is less [[anaerobic exercise|anaerobic]] in nature and demands athletic qualities similar to the [[800 meters]] flat race.

A hurdling technique can also be found in the [[steeplechase (athletics)|steeplechase]], although in this event athletes are also permitted to step on the barrier to clear it.<ref name=IAAFrb /> Similarly, in [[cross country running]] athletes may hurdle over various natural obstacles, such as logs, mounds of earth, and small streams – this represents the sporting origin of the modern events. [[Horse racing]] has its [[Hurdling (horse race)|own variant]] of hurdle racing, with similar principles.<ref>((cite web | url=http://www.racingvictoria.net.au/asset/cms/Jumps/jumps%20review%20report_nov%202008.pdf | title=Horse Racing Victoria |website=racingvictoria.net.au| access-date=December 8, 2013))</ref>

==Distances==
{|class=wikitable style="font-size:95%" align=right
|+ Most common hurdling distance
|-
!Event
!Sex
!Olympic
!World Championship
|-
|[[50 m hurdles]]
|Both
|No
|No
|-
|[[55 m hurdles]]
|Both
|No
|No
|-
|[[60 m hurdles]]
|Both
|No
|[[IAAF World Indoor Championships|1987–present]]
|-
|[[80 m hurdles]]
|Women
|[[Sprint hurdles at the Olympics#Women's 80 metres hurdles|1932–1968]]
|No
|-
|[[100 m hurdles]]
|Women
|[[Sprint hurdles at the Olympics#Women's 100 metres hurdles|1972–present]]
|[[IAAF World Championships in Athletics|1983–present]]
|-
|[[110 m hurdles]]
|Men
|[[Sprint hurdles at the Olympics#Men's 110 metres hurdles|1896–present]]
|[[IAAF World Championships in Athletics|1983–present]]
|-
|[[Low hurdles|200 m hurdles]]
|Men
|[[Sprint hurdles at the Olympics#200 metres hurdles|1900–1904]]
|No
|-
|[[300 metres hurdles|300 m hurdles]]
|Both
|No
|No
|-
|[[400 m hurdles]]
|Both
|[[400 metres hurdles at the Olympics|1900–08 & 1920–present (men)<br>1984–present (women)]]
|[[IAAF World Championships in Athletics|(1983–present)]]
|-
|}
The standard sprint or short hurdle race is [[110 metre hurdles|110 meters]] for men and [[100 metre hurdles|100 meters]] for women. The standard number of steps to the first hurdle should be 8. The standard long hurdle race is [[400 metre hurdles|400 meters]] for both men and women. Each of these races is run over ten hurdles and they are all [[Summer Olympic Games|Olympic]] events.<ref name="IAAF Rulebook">((cite web |url=http://www.iaaf.org/mm/Document/Competitions/TechnicalArea/05/47/81/20091027115916_httppostedfile_CompRules2010_web_26Oct09_17166.pdf |title=IAAF Rulebook |website=iaaf.org |archive-url=https://web.archive.org/web/20111011023632/http://iaaf.org/mm/Document/Competitions/TechnicalArea/05/47/81/20091027115916_httppostedfile_CompRules2010_web_26Oct09_17166.pdf |archive-date=2011-10-11 ))</ref>

The men's 200 meters [[low hurdles]] event was on the Olympic athletics programme for the [[1900 Summer Olympics|1900]] and [[1904 Summer Olympics]]. These low hurdles events were widely participated in the early part of the 20th century, particularly in North America. However, beyond these two Olympic outings, they never gained a consistent place at international competitions and became increasingly rare after the 1960s.  This 10-hurdle race continues to be run in places such as [[Norway]].<ref name="Friidrett for barn og ungdom">((cite web | url=http://www.friidrett.no/organisasjon/Documents/H%C3%A5ndbok2013.pdf | title=Friidrett for barn og ungdom | work=Norsk Friidrett | access-date=December 3, 2013 | archive-url=https://web.archive.org/web/20131206135405/http://www.friidrett.no/organisasjon/Documents/H%C3%A5ndbok2013.pdf | archive-date=December 6, 2013 | url-status=dead | df=mdy-all ))</ref><ref name="Hekke">((cite web | url=http://friidrett.forbundetonline.no/stevner/ovelse/Documents/Hekke%C3%B8velser%20og%20hekkeavstander%202012.pdf | title=Hekkeøvelser og hekkeavstander | work=Norsk friidrett | access-date=December 3, 2013 | archive-url=https://web.archive.org/web/20131206111657/http://friidrett.forbundetonline.no/stevner/ovelse/Documents/Hekke%C3%B8velser%20og%20hekkeavstander%202012.pdf | archive-date=December 6, 2013 | url-status=dead | df=mdy-all ))</ref>

Other distances are run, particularly indoors but occasionally outdoors. The sprint hurdle race indoors is usually [[60 metre hurdles|60 meters]] for both men and women, although races 55 meters or 50 meters long are sometimes run, especially in the [[United States]]. A 60-meter indoor race is run over 5 hurdles. A shorter race may occasionally have only 4 hurdles. Outdoors, a long hurdle race is sometimes shortened to [[300 metres hurdles|300 meters]] for younger participants, who run over 8 hurdles. For example, high school and middle school athletes in California, Minnesota, and Pennsylvania run the 300 meter hurdles instead of running the 400 meter hurdles, like the majority of state competitors run today. The distance the hurdles are spaced is identical to the beginning of a standard 400 meter race which would have 10 hurdles. There are also 200 meter races for middle school and younger divisions over 5 hurdles (spaced in the same position as the last 5 hurdles of a standard 400 meter race).<ref name="hurdles101" />

[[File:1912 Athletics men's 110 metre hurdles final.JPG|thumb|The final of the men's 110 metre hurdles at the 1912 Summer Olympics]]

==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 (60 m, and 110 m), 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 (400 m) 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" ((convert|30|in|cm|1)) 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>

==Technique==
((more citations needed section|date=August 2012))
[[File:Hurdling Kraenzlein.png|thumb|A sequence showing hurdling, from 1900. Today a distance to the first hurdle of more than 1&nbsp;m is advised.]]
[[File:100 m hurdles Memorial Van Damme 2010.jpg|thumb|100 m hurdles at the 2010 Memorial Van Damme. Priscilla Lopes-Schliep, Sally Pearson, Lolo Jones and Perdita Felicien]]
[[File:2008_Summer_Olympics_-_Men's_110m_Hurdles_-_Semifinal_1.jpg|thumb|right|2008 Summer Olympics – Men's 110&nbsp;m Hurdles – Semifinal 1]]
[[File:400 m hurdles Kerron Clement Berlin 2009.jpg|thumb|Kerron Clement running the 400&nbsp;m hurdles in Berlin, 2009 (at center)]]

In order to obtain the optimal hurdling technique, one must first learn the proper running techniques. It is important that the runner stays on the balls of his or her feet for the entirety of the race. This makes a fluid movement between each stage of the race.

There is a technique that is desirable to accomplish efficient hurdling action during a race. Many runners rely mainly on raw speed, but proper technique and well-planned steps leading up to and between each hurdle can allow an efficient hurdler to outrun faster opponents.  Generally, the efficient hurdler spends the minimum amount of time and energy going vertically over the hurdle, thus achieving maximum speed in the horizontal race direction down the track.

When approaching the first hurdle, athletes try to avoid [[stutter step]]ping (a term used to refer to the cutting of stride length before reaching a hurdle).  This cuts the runner's momentum and costs valuable time. Athletes attack the hurdle by launching at it from 6–7 feet away (depending on the runner's closing speed); the lead leg extended yet slightly bent (because a straight leg leads to more time over the hurdle) so that the heel just narrowly clears the barrier's height. After launching, the trail leg is tucked in horizontally and flat, close to the side of the hip. The objective is to minimize center-of-gravity deviation from normal sprinting and reduce time spent flying through the air.

In order to hurdle properly and not simply jump over it, a runner must adjust his or her hips to raise them over the hurdles.  This involves the correct use of the lead leg, trail leg, and arm positions. The lead leg is the leg that goes over the hurdle first and should remain fairly straight. Upon crossing over the hurdle barrier, the runner's lead leg snaps down quickly landing roughly ((convert|1|m|ft|lk=off|abbr=off|sigfig=1)) beyond the hurdle. The trail leg follows the lead leg. The trail leg drives forward at the knee (not swinging, as swinging causes the trunk to straighten up), and pulls through to maintain stride length. An effective trail leg will be parallel to the top of the hurdle and will be as close to the top of the hurdle as possible. As the lead leg is being lifted over the hurdle, the opposite arm should cross the body parallel to the ground. This helps with the runner's balance and rhythm throughout the race.

In men's hurdles, it is usually necessary to straighten the leg at the top of the flight path over the hurdle, although a partial bend in the [[knee]] gains a faster push-off when the athlete hits the ground. The ability to do this depends on the runner's leg length.  As soon as the foot has cleared the hurdle, the knee starts bending again to lessen the effect of a long, slow pendulum. In women's hurdles, the lead leg is usually straight and the center of gravity does not rise relative to a normal running stride. Another way to view it is the “foot-path”: "shortest path up and the shortest path down". The opposite arm reaches farther forward and the elbow travels out to the side and then behind to make room for the trailing leg. The trailing leg also leads with the knee, but the foot and knee are horizontal, tucked up as tight as possible into the [[armpit]].

As soon as the lead leg begins its descent, a strong downward push is exerted to enable the trailing leg's knee to come up under the armpit and in front of the chest. This enables the recovery of some of the energy expended in the flight. As the lead leg touches down to the ground, it is critical that the runner remains in a sprint. As soon as his or her lead leg touches down, the trail leg arm drives the rest of the body forward.

In the 100 and 110-meter hurdle events, the fastest hurdlers use the three-step technique. This means that three large steps are taken in between all of the hurdles. In order to do this efficiently, hurdlers must take long strides and maintain their speed for the entire race. If a hurdler begins to slow down while three-stepping, they may not be able to make it through all of the hurdles and may have to switch to a four-stepping or five-stepping technique. When three- or five-stepping, a hurdler will use the same lead leg for all of the hurdles. If a hurdler four steps, they will have to switch lead legs at each hurdle.

A modern hurdle will fall over if a runner hits it.  There is no penalty for hitting a hurdle (provided this is not judged deliberate).  The misconception is based on old rules before the hurdles were weighted.  In the [[Athletics at the 1932 Summer Olympics|1932 Olympics]], [[Bob Tisdall]] famously won the Olympic gold medal in the [[400-meter hurdles]] in World Record time, but was not credited with the record due to knocking over a hurdle.  There can be a disqualification if a hurdler knocks a hurdle into an opponent's lane and it is judged to have interfered with the opponent's ability to run the race. There are now specifications for the tipping weight of a hurdle (the weights need to be adjusted to correspond with the height of the hurdle) so hitting a hurdle theoretically slows down the rhythm of the hurdler.  However, pushing the hurdle with one's hands or running out of one's lane as a result of hitting the hurdle is cause for disqualification.  While hitting hurdles is not generally considered desirable, a few sprint hurdlers have succeeded despite knocking over many hurdles. Contact with hurdles can decrease speed and also result in disruption of a hurdler's technique. Some coaches suggest if you lightly "kiss" the hurdle with the side of the leg closest to the hurdle, it can help with the runner's speed by keeping the runner closer to the ground.<ref name="IAAF Rulebook"/>

==Variants==
There are also [[shuttle hurdle relay]] races, although they are rarely run.  They are usually only found at track meets that consist entirely of relay races.  In a shuttle hurdle relay, each of four hurdlers on a team runs the opposite direction from the preceding runner. The standard races correspond to the standard sprint hurdle races: 4 × 110 m for men and 4 × 100 m for women.<ref>((cite web |url=http://www.woodhurdles.com/ShuttleHurdleRelay/SHR.pdf |title=Masters Shuttle Hurdles specifications |website=woodhurdles.com |access-date=2009-12-18 |archive-date=2016-03-03 |archive-url=https://web.archive.org/web/20160303202031/http://www.woodhurdles.com/ShuttleHurdleRelay/SHR.pdf |url-status=dead ))</ref>

The shuttle hurdle relay has a maximum of only 4 teams, since most tracks only have 8 lanes. Two lanes will be taken up by one team. The #1 and #3 runners on the team will run in one direction down one specific lane and the #2 and #4 runners will run in the opposite direction in the other lane. The runners on each team go in sequence from 1 to 4.

Instead of using batons, the runners waiting for their teammate to finish must wait until their teammate gets to a certain point to begin their part of the race. There will be an official looking to see if they take off too early. If they do so, then they will be disqualified; if they take off late then it will just hurt their time and chances of winning the event.

In the United States, the men's team of [[Aries Merritt]], [[Jason Richardson (hurdler)|Jason Richardson]], [[Aleec Harris]], and [[David Oliver (hurdler)|David Oliver]], set the world record in the 440m [[shuttle hurdle relay]] race at a time of 52.94 seconds (set on April 25, 2015).<ref name=":0">((Cite web|url=https://www.legacy.usatf.org/statistics/records/view.asp?division=american&location=outdoor%20track%20&%20field&age=open&sport=TF|title=USATF – Statistics – Records|website=www.usatf.org|language=en|access-date=2017-09-27))</ref> On the women's side, [[Brianna Rollins]], [[Dawn Harper-Nelson]], [[Queen Harrison]], [[Kristi Castlin]], together ran a 400m shuttle hurdle race at a world record time of 50.50 seconds on August 24, 2015.<ref name=":0" />

Shuttle hurdle relay was introduced at the [[2019 IAAF World Relays]], it consist of a race in which two men and two women on each team are running a [[110 m hurdles]].<ref>((cite web|url=https://www.iaaf.org/news/press-release/world-relays-2019-shuttle-hurdles-2x2x400|title=TWO NEW EVENTS ADDED TO IAAF WORLD RELAYS PROGRAMME|publisher=iaaf.org|access-date=12 May 2019))</ref>

==See also==
((portal|Sport of athletics))
*[[List of hurdlers]]
*[[Women's 100 metres hurdles world record progression]]
*[[Women's 400 metres hurdles world record progression]]
*[[Men's 110 metres hurdles world record progression]]
*[[Men's 400 metres hurdles world record progression]]
*[[Steeplechase (athletics)]]

==References==
((Reflist))

* ((cite journal|last=White|first=Tommie Lee|author2=Carty, George Gordon|title=Seven Keys to Hurdling Excellence|journal=Coach & Athletic Director|date=April 2002|volume=71|issue=9|pages=24|url=http://connection.ebscohost.com/c/articles/6422150|access-date=September 29, 2013))
* ((cite book|last=Group|first=Diagram|title=Enjoying Track and Field Sports|year=1979|publisher=Diagram Visual Information|location=United States|pages=36–41))

==External links==
*[http://www.trackinfo.org/Hurdles101.html  Trackinfo explanation of hurdles]
*[https://iaaf.gekko.de/?a=hurdles IAAF list of hurdles-records in XML]
* [https://www.worldcat.org/title/hurdlers-bible/oclc/996284/editions?sd=asc&start_edition=1&referer=di&se=yr&qt=sort_yr_asc&editionsView=true&fq=  00. The Hurdler's Bible 2 by Wilbur L. Ross and Norma Hernandez de Ross, PH.D.  Copyrighted 1966, 1978, and 1997.]
*((commons category-inline))

((Athletics events))
((Racing))
((Authority control))

[[Category:Hurdling| ]]
[[Category:Running by type]]
[[Category:Athletics by type]]
[[Category:Jumping sports]]
[[Category:Track relay races]]

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Module:Category handler (view source) (protected)
Module:Category handler/blacklist (view source) (protected)
Module:Category handler/config (view source) (protected)
Module:Category handler/data (view source) (protected)
Module:Category handler/shared (view source) (protected)
Module:Check for unknown parameters (view source) (protected)
Module:Citation/CS1 (view source) (protected)
Module:Citation/CS1/COinS (view source) (protected)
Module:Citation/CS1/Configuration (view source) (protected)
Module:Citation/CS1/Date validation (view source) (protected)
Module:Citation/CS1/Identifiers (view source) (protected)
Module:Citation/CS1/Utilities (view source) (protected)
Module:Citation/CS1/Whitelist (view source) (protected)
Module:Citation/CS1/styles.css (view source) (protected)
Module:Commons link (view source) (template editor protected)
Module:Convert (view source) (template editor protected)
Module:Convert/data (view source) (template editor protected)
Module:Convert/text (view source) (template editor protected)
Module:Disambiguation/templates (view source) (protected)
Module:Distinguish (view source) (template editor protected)
Module:EditAtWikidata (view source) (protected)
Module:Format link (view source) (template editor protected)
Module:Hatnote (view source) (template editor protected)
Module:Hatnote/styles.css (view source) (template editor protected)
Module:Hatnote list (view source) (template editor protected)
Module:If empty (view source) (protected)
Module:Message box (view source) (protected)
Module:Message box/ambox.css (view source) (protected)
Module:Message box/configuration (view source) (protected)
Module:Namespace detect/config (view source) (protected)
Module:Namespace detect/data (view source) (protected)
Module:Navbar (view source) (protected)
Module:Navbar/configuration (view source) (protected)
Module:Navbar/styles.css (view source) (protected)
Module:Navbox (view source) (template editor protected)
Module:Navbox/configuration (view source) (template editor protected)
Module:Navbox/styles.css (view source) (template editor protected)
Module:Pagetype (view source) (protected)
Module:Pagetype/config (view source) (protected)
Module:Pagetype/disambiguation (view source) (protected)
Module:Pagetype/setindex (view source) (protected)
Module:Pagetype/softredirect (view source) (protected)
Module:Portal (view source) (template editor protected)
Module:Portal-inline (view source) (template editor protected)
Module:Portal/images/s (view source) (template editor protected)
Module:Portal/styles.css (view source) (template editor protected)
Module:SDcat (view source) (protected)
Module:String (view source) (protected)
Module:TableTools (view source) (protected)
Module:Unsubst (view source) (protected)
Module:Wikitext Parsing (view source) (protected)
Module:Yesno (view source) (protected)

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Retrieved from "https://en.wikipedia.org/wiki/Hurdling"