Chicago Marathon 2024 Route Map Pdf. The chicago marathon expo is held at mccormick place. On race day, i woke up early at 4:30 am, three hours ahead of the marathon’s 7:30 am start time.

On race day, i woke up early at 4:30 am, three hours ahead of the marathon’s 7:30 am start time. The chicago marathon expo is held at mccormick place.