Organisers of the Bank of America Chicago Marathon have announced elite fields for the 48th edition that they are calling one of the deepest in the race's history, with six men who have already run under 2:04 set to line up on 11 October. Defending champion Jacob Kiplimo headlines the men's race after winning in 2:02:23 last year, the second-fastest time ever recorded in Chicago, and arrives in form having since clocked 2:00:28 at the 2026 London Marathon, the third-fastest marathon performance of all time.
Kiplimo will be pushed hard by fellow defending-champion company and a field built for speed rather than tactical racing. Hawi Feysa, who shares top billing in the announcement, joins Kenya's Amos Kipruto, runner-up in London this year in a personal-best 2:01:29, and Alex Masai, third in Chicago in 2025. Also entered are 2024 Berlin champion Milkesa Mengesha and back-to-back Tokyo winner Tadese Takele Bikila, giving the race a genuine claim to fielding six sub-2:04 men in a single start list. The American contingent is led by Charles Hicks, whose 2:04:35 from Boston this spring stands as the second-fastest marathon ever run by a US athlete.
The women's race carries its own significant storyline in the return of Brigid Kosgei, back in Chicago for the first time since 2019, when she set the course record that stood for years afterwards. Kosgei arrives with recent form of her own, having won the Tokyo Marathon in April in 2:14:29. She will face Sharon Lokedi, making her Chicago debut after building a reputation over recent seasons as one of the most consistent championship-style racers on the world marathon circuit, capable of racing tactically as well as against the clock.
Chicago's flat, fast course and typically mild October conditions have made it a favoured venue for fast times over the past decade, and this year's organisers are explicit that the field has been assembled with times, not just places, in mind. The presence of multiple sub-2:04 men creates the possibility of a genuine pack pushing the pace deep into the race, a dynamic that has produced some of the marathon's fastest recorded splits in recent editions when several rivals share the pacing workload rather than relying on a single set of rabbits.
For the sport more broadly, the announcement continues a summer in which marathon organisers across the Abbott World Marathon Majors have leaned into head-to-head narratives between athletes who have already met, or narrowly missed each other, earlier in the year. With London's result putting Kiplimo, Kipruto and Sawe's times all within a couple of minutes of one another this spring, Chicago's October field effectively continues that conversation on a course with a strong record for producing fast, clean racing conditions.