Home of the men's former world record and women's world record. The flat Chicago course through 29 neighborhoods is one of the most spectator-friendly marathons in the world.
Chicago Marathon 2026 features an elite field rated 94/100, with John Korir 🇰🇪 emerging as the clear frontrunner at 87.0% win probability. With a projected finish of ~2:02:20, this could be a statement performance. Tamirat Tola trails at 12.5% and will need a tactical masterclass to contend.
Watch for the head-to-head between John Korir and Tamirat Tola — our model has them separated by only 74.5 points. Jacob Kiplimo 🇺🇬 (0.6%) adds a wildcard element. Course knowledge and pacing strategy will be decisive in the closing stages.
Cool conditions (15°C / 59°F) are favorable for fast times. Partly cloudy skies should allow athletes to push the pace early. Watch for Light 8 km/h impacting the exposed sections of the course.
John Korir to win. Projected finish: ~2:02:20. Early projection — form and fitness closer to race day will refine this call.
Course record: 2:00:35 / 2:09:56. With field strength at 94/100, the record is within striking distance. Chicago, IL, USA hosts this 42.195 km event.