Hypothermia kills 21 runners in the 100<span id="mwAfI" typeof="mw:Entity"> </span>km (60-mile) <a href="https://en.wikipedia.org/wiki/Gansu_ultramarathon_disaster" id="mwAfM" rel="mw:WikiLink" title="Gansu ultramarathon disaster">Gansu ultramarathon disaster</a> in China.<sup about="#mwt91" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-15"}}' id="cite_ref-15" rel="dc:references" typeof="mw:Extension/ref"><a href="./May_22#cite_note-15" id="mwAfQ" style="counter-reset: mw-Ref 15;"><span class="mw-reflink-text" id="mwAfU">[15]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-15"><cite about="#mwt88" class="citation news cs1" id="mwB1s"><a class="external text" href="https://www.wsj.com/articles/extreme-weather-kills-21-runners-in-chinese-mountain-race-11621774245" id="mwB1w" rel="mw:ExtLink nofollow">"Extreme Weather Kills 21 Runners in Chinese Mountain Ultramarathon"</a>. <i id="mwB10">Wall Street Journal</i>. Associated Press. 2021-05-23. <a class="mw-redirect" href="./ISSN_(identifier)" id="mwB14" rel="mw:WikiLink" title="ISSN (identifier)">ISSN</a><span id="mwB18" typeof="mw:Entity"> </span><a class="external text" href="https://www.worldcat.org/issn/0099-9660" id="mwB2A" rel="mw:ExtLink nofollow">0099-9660</a><span class="reference-accessdate" id="mwB2E">. Retrieved <span class="nowrap" id="mwB2I">2021-05-24</span></span>.</cite><span about="#mwt88" class="Z3988" id="mwB2M" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=article&amp;rft.jtitle=Wall+Street+Journal&amp;rft.atitle=Extreme+Weather+Kills+21+Runners+in+Chinese+Mountain+Ultramarathon&amp;rft.date=2021-05-23&amp;rft.issn=0099-9660&amp;rft_id=https%3A%2F%2Fwww.wsj.com%2Farticles%2Fextreme-weather-kills-21-runners-in-chinese-mountain-race-11621774245&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AMay+22"></span></span>