The world and American records are on high alert in the Windy City? World record watch? The men’s race at the 2025 Chicago Marathon We may earn commission from links on this page, but we only recommend products we back Celebrities That Ran the 2025 Chicago Marathon this year.
Defending champion John Korir returns to the Windy City looking for his fastest marathon performance yet, but he’ll likely face challenges from half marathon world-record holder Jacob Kiplimo and many other men who have stood atop a World Marathon Major podium before. Plus, Conner Mantz boldly declared months ago that he would go after the 2:05:38 American men’s marathon record in Chicago–and will his goal come to fruition?
News Editor Theo Kahler breaks down what it could take from Mantz to snag the American record, plus previews the loaded field that could scare the 2:00:35 world record set by the late Kelvin Kiptum two years ago in Chicago.
To follow along with all the storylines this weekend at the Chicago Marathon, consult our How to Watch the 2025 Chicago Marathon so you don’t miss any of the elite action.
Ashley is Editor of Content Hype at Hearst’s Enthusiast & Wellness Group. She is a former collegiate runner at UNC Asheville where she studied mass communication. Ashley loves all things running; she has raced two marathons, plus has covered some of the sport’s top events in her career, including the Paris Olympics, U.S. Olympic Trials and multiple Celebrities That Ran the 2025 Chicago Marathon.
