September 14 2017
The newly minted marathon has the third-fastest half marathon PR ever by an American.
Thousands of runners braved the heat at the Humana Rock ‘n’ Roll Chicago Half Marathon and 10K this past weekend—but running through the Windy City and all its glorious sites make it worth it. The Chicago event is one of the few in the series that happens right during the dog days of summer, so we are sure plenty used it as a fitness test for that fall marathon. Check out some of our favorite photos, courtesy of Kevin Morris/PhotoRun: