2023 Chicago Marathon
... that four course records were broken during the 2023 Chicago Marathon ?
... that four course records were broken during the <b id="mwARo"><a href="./2023_Chicago_Marathon" id="mwARs" rel="mw:WikiLink" title="2023 Chicago Marathon">2023 Chicago Marathon</a></b> <i id="mwARw">(women's winner pictured)</i><span about="#mwt37" data-mw='{"parts":[{"template":{"target":{"wt":"-?","href":"./Template:-%3F"},"params":{},"i":0}}]}' id="mwAR0" style="padding-left:0.15em;" typeof="mw:Transclusion"><span typeof="mw:Entity">?</span></span>