Races Half marathon · Chicago, USA
Chicago Half Marathon
Chicago Half Marathon is a flat half marathon in Chicago, USA, held each September. A flat out-and-back from Jackson Park by the Museum of Science and Industry, running north on Lake Shore Drive to a Burnham Park turnaround and back. Late-September mornings, typically mild, around 12 to 20°C. On a course as flat as Chicago Half Marathon, even splits are everything; the classic mistake is banking time in the first third.
Page rebuilt 2026-11-14 · race facts not independently verified — confirm dates and entries on the official race site
When
September
next: Sunday 26 September 2027
Course
flat
Half marathon
Conditions
Late-September mornings, typically mild, around 12 to 20°C.
Racing this course well
A flat out-and-back from Jackson Park by the Museum of Science and Industry, running north on Lake Shore Drive to a Burnham Park turnaround and back.
On a course as flat as Chicago Half Marathon, even splits are everything; the classic mistake is banking time in the first third.
Getting a place
- How you get in
- Open entry: first come, first served
- Entries open
- General registration for 2027 opens on 13 January 2027, with early access for Life Time members on 6 January
- Does it sell out?
- YesThe 2025 edition was reported as sold out.
Official Chicago Half Marathon site →Checked November 2026
Race day
- Next race
- Sunday 26 September 2027
- Also on the day
- 5k
Pick your goal for Chicago
Pace charts, weekly structure and timelines for the most common half marathon goals:
The date shown is the one the organiser has announced. Change it if yours differs.
Build your training around Chicago Half Marathon.
RunV works backwards from race day to today. Your plan adapts when life interrupts, and you approve every change. It does not adapt to this specific course — the pacing guidance above is where the course knowledge is.
Everything above stays free and complete — this is an optional next step, not a paywall.
Asked often
- When is the Chicago Half Marathon?
- The next Chicago Half Marathon is on Sunday 26 September 2027 in Chicago, USA. It is held each September.
- Is the Chicago Half Marathon course flat?
- A flat out-and-back from Jackson Park by the Museum of Science and Industry, running north on Lake Shore Drive to a Burnham Park turnaround and back.
- How do I enter the Chicago Half Marathon?
- Open entry: first come, first served. General registration for 2027 opens on 13 January 2027, with early access for Life Time members on 6 January.
- Does the Chicago Half Marathon sell out?
- Yes. The 2025 edition was reported as sold out.
- How should I train for the Chicago Half Marathon?
- Train specifically for Chicago — terrain, conditions, goal pace — and let the plan flex around real life. With RunV Premium you can adapt your plan to fit your week.
Not sure what to target? Predict your half marathon time from a recent race →
More half marathon races
Supplements research for this distance
Build for Chicago — around your actual life
RunV engineers your block backwards from race day in September — and adapts it when training doesn't go to script. You approve every change.
