Notably, the 47th Chicago Marathon marks the first running of the race after the recently announced reduction in automatic qualification time standards. Despite the reductions, a record 160,000 people applied to run in the marathon, with an estimated 53,000 runners expected to cross the finish line.[2] This number likely will break the event record of 52,150 from the 2024 Chicago Marathon.[3]
The Chicago Marathon is regarded as one of the fastest marathon courses due to its unparalleled flat course and usual cool weather conditions.[5] These ideal conditions have made Chicago the site of seven world records at the marathon distance, with the most recent coming in the 2024 edition, where Ruth Chepng'etich lowered the record to 2:09:56, besting the prior record by nearly 2 minutes on her way to becoming the first women under the 2:10:00 mark.[6][7]
Competitors
John Korir in the 2025 Boston Marathon
The mens elite race boasts one of the most talented fields in the World Marathon Major events this year.[8]KenyanJohn Korir, the defending champion, will headline the mens field with a 2:02:44 PB set during his victory at the 2024 Chicago Marathon. Korir will be joined by compatriots Timothy Kiplagat, Amos Kipruto, and Cybrian Kotut all with personal bests under the 2:04:00 mark. The two time Olympic marathon medalist Bashir Abdi from Belgium with a 2:03:36 will also toe the line. Half marathon world record holder Jacob Kiplimo from Uganda is entered with a 2:03:37 from his debut performance at the 2025 London Marathon where he placed second. AmericanConner Mantz ran 2:05:08 on his way to a 4th place finish at the 2025 Boston Marathon, however because the Boston Marathon does not qualify for ratification of official records[9], Mantz will attempt to lower the US (2:05:38) and North American (2:05:36) records in Chicago.[10][11]
Because 2024 champion and WR holder Ruth Chepng'etich is not entered to run the 2025 edition, she will not defend her title, and a new champion will be crowned. EthiopianMegertu Alemu leads the field with a 2:16:34 PB and three World Marathon Major podium finishes, most recently, a third place finish at the 2023 Chicago Marathon. Ethiopian Hawi Feysa enters the race with a 2:17:00 and a podium finish at the 2025 Tokyo Marathon. Compatriots Bedatu Hirpa, and Haven Hailu Desse also enter the race with personal bests under 2:20 across the distance. Ejgayehu Taye, the 2023 World bronze medalist across 10,000m will make her debut at the marathon distance.[10][11]
Results
The Chicago Marathon began on October 12 at 7:20am.
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