October 13, 2025

It was a historic morning in Chicago! The 2025 Chicago Marathon gave us two unforgettable stories that will be talked about for years. America’s Conner Mantz broke a 23-year-old American marathon record. Meanwhile, Uganda’s Jacob Kiplimo won the whole race in just his second-ever marathon. How did Conner Mantz break the American Marathon Record? On Sunday, 28-year-old Conner Mantz ran a stunning marathon time of 2:04:43. This smashed the old American record held by Khalid Khannouchi since 2002, which was 2:05:38. What makes this record even sweeter? Mantz ran on a record-eligible Chicago course, making him the first American to finish under 2:05 in such conditions! He paced his race just right—halfway time was 1:02:19, and he slowed by only five seconds in the later miles. Mantz skipped the 2025 World Championships to focus fully on Chicago, betting on the flat and fast course to make history. Earlier in the year, he ran 2:05:08 at Boston, but that course doesn't allow records due to its downhill profile. Now, Chicago turned his hint into a smashing reality. How Did Jacob Kiplimo Dominate the Field? While Mantz made American history, Uganda’s Jacob Kiplimo was busy showing the world his power. The 24-year-old blasted past defending champ John Korir after halfway, racing through 13.1 miles in just 1:00:16—blazing fast! He flirted with world record pace till mile 20 but felt some fatigue near the end. Still, Kiplimo finished strong with a crazy-fast time of 2:02:23 in only his second marathon ever. Kiplimo’s already a star with a half marathon world record, two World Cross Country titles, and Olympic medals. His quick rise to marathon greatness adds a sparkling jewel to his crown. The race also saw a proud North American moment as Canadian Rory Linkletter finished 9th with 2:06:49. The 2025 Chicago Marathon had 50,000 runners racing in a day that attracted a record 160,000 applications. Here’s a quick look at the men’s top results: 1. Jacob Kiplimo (UGA) 2:02:23 2. Amos Kipruto (KEN) 2:03:54 3. Alex Masai (KEN) 2:04:37 4. Conner Mantz (USA) 2:04:43 5. Huseydin Esa (ETH) 2:04:50 Conner Mantz’s record-breaking run is a huge jump forward for American running. With his smart speed and hard training, he set a new American standard that inspires future runners. As the marathon world looks to 2026, eyes will be on Chicago again to see if Mantz can keep shining or if Kiplimo rewrites more of the record books. What a marathon day full of passion, power, and history made!

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Tags: 2025 chicago marathon, Conner mantz, Jacob kiplimo, American marathon record, Marathon running, Long-distance running,