2026 operating status

Know what is final.

Confirmed for 2026

Race date

Sunday 10 October 2027. The 49th running.

Source
Confirmed for 2026

Expo

Abbott Health & Fitness Expo at McCormick Place. 7 October 10 a.m.–6 p.m., 8 October 9 a.m.–6 p.m., 9 October 9 a.m.–6 p.m. Times subject to change. In-person pickup with photo ID. No race-day pickup.

Source
Awaiting 2026 detail

Course file

No GPX on the FAQ. The old course-map URL is not the page we used. Start and finish streets are published. Mid-course streets are not, except one tent location on the participant page.

Source
Read the full edition note

Chicago Marathon · October 2027

Weather & climate

The FAQ has an alert system and no climate table.

In this guide · 1 decisions
  1. 01Event Alert System

Event Alert System

Color flags at the start, the finish, and all 20 aid stations if the weather changes. The 9–17°C band and 25% rain figure already in this record were not on the FAQ.

Race-week weather

The seven-day window opens only when it matters

Checking the race-week forecast window…

Continue the plan

Apply the forecast to the start chainPlan layers, transport, start-village waiting, finish exit, and reunion.

Edition status

The FAQ, opened 4 November 2026, says the 49th running is Sunday 10 October 2027. The start is Grant Park at Columbus Drive and Monroe Drive. The finish is Columbus Drive south of Balbo Drive. Time limit 6 hours 30 minutes. The participant page prints a Sunday schedule and says the times can change. No GPX. We do not have a surveyed pin for the Columbus and Monroe intersection.