Running News Daily

The 2025 Chicago Marathon, set for October 12, promises one of the deepest men’s fields in recent history. Featuring Olympic medalists, World Marathon Majors champions, and promising debutants, this year’s race could produce a historic performance on the streets of the Windy City.

Leading the field is defending champion John Korir of Kenya, who owns a personal best of 2:02:44. He will be challenged by countryman Timothy Kiplagat (2:02:55) and Amos Kipruto (2:03:13), both proven contenders on the global stage. Adding to the Kenyan firepower are Cyprian Kotut (2:03:22), Philemon Kiplimos (2:04:01), and former World Half Marathon record-holder Geoffrey Kamworor(2:04:23).

International stars include Olympic marathon champion Bashir Abdi (2:03:36) of Belgium, Uganda’s Jacob Kiplimo (2:03:01), and Ethiopia’s Huseydin Mohamed Esa (2:04:39).

The American contingent is particularly strong this year, led by Conner Mantz (2:05:08), Daniel Ebenyo (2:06:04), and Galen Rupp (2:06:07). Other top U.S. names include Matt Richtman (2:07:56), Ryan Ford (2:08:00), Rory Linkletter (2:08:01), and CJ Albertson (2:08:17). The lineup also features debut marathoners Casey Clinger and Tai Dinger, both looking to make their mark.

With such a talent-packed field, the 2025 Chicago Marathon could see not only a thrilling battle for the win but also a possible course record — and perhaps another sub-2:03 clocking on American soil.

The flat, fast Chicago course combined with October’s typically cool running conditions make this race a prime stage for history. Fans around the world will be watching closely to see which athlete emerges victorious in what promises to be one of the most competitive marathons of the year.