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2025 Chicago Marathon: Korir Eyes Sub-2:01 Amid Star Entrants

10/9/2025

26 3 Full Breakdown

Summary

Story summary

The 2025 Bank of America Chicago Marathon is set for October 12, with John Korir aiming sub-2:01.
Forecasts show morning temperatures in the upper 50s, rising toward 70 degrees.
Galen Rupp, Susannah Scaroni, and Jacob Kiplimo are notable entrants; Kiplimo ran 2:03 in London.
The 2026 lottery opens October 21, 2025, with registration details to follow.

History

Historical Context

The Chicago Marathon began on September 25, 1977, attracting 4,200 runners and marking a revival of marathon racing in the city. Initially named the Mayor Daley Marathon, it has grown significantly, with over 48,000 finishers in recent years. The event reflects the rising popularity of long-distance running in the U.S. and contributes substantially to Chicago's economy, generating millions in tourism revenue.

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Story summary

The 2025 Bank of America Chicago Marathon is set for October 12, with John Korir aiming sub-2:01.
Forecasts show morning temperatures in the upper 50s, rising toward 70 degrees.
Galen Rupp, Susannah Scaroni, and Jacob Kiplimo are notable entrants; Kiplimo ran 2:03 in London.
The 2026 lottery opens October 21, 2025, with registration details to follow.

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