Chicago Marathon 2026 Dates And Times. The lettered start corrals a, b, c and d are seeded placement of the fastest 12,000 participants based on their recent marathon and half marathon finish times. Register your interest for 2026.
The chicago marathon is known for its fast and flat course through one of the world’s most magnificent cities. Chicago marathon 2026 there will be a predicted attendance of 1,700,000 people and a predicted event spend (usd) of $171,875,509 at the event in 2026.