Editing Hurdling (section)

==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 × 110m for men and 4 × 100m 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=usatf.org|language=en|access-date=2017-09-27|archive-date=2021-10-24|archive-url=https://web.archive.org/web/20211024054211/http://legacy.usatf.org/statistics/records/view.asp?division=american&location=outdoor%20track%20%26%20field&age=open&sport=TF|url-status=dead}}</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 consists of a race in which two men and two women on each team are running a [[110 m hurdles|110m hurdles]] leg.<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>