Half marathonRoad🇺🇸 Chicago, United States

Chicago Half Marathon

Sunday, 26 September 2027Estimated dateIn 11 months · Start 07:00

A late-September half that starts and finishes in Jackson Park on the South Side and runs out and back on a closed Lake Shore Drive with skyline views across Lake Michigan.

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Facts checked 22 Oct 2026 against chicagohalfmarathon.com, letsdothis.com, halfruns.com.

Elevation gain

20 m

Flat · ↓ 20 m

Start altitude

191 m

above sea level, from terrain data

Temp at start

15°C

Peaks around 21°C

Entry fee

≈ $145

Open entry

Finishers

7,300

typical year

Course

Out and back

Cut-off: check site

Getting thereFly into MDW (Chicago), about 14 km from the start

Course map

A detailed route is not available for this race yet. The marker shows the race location.

Elevation profile

Flat: about 20 m of climbing and 20 m of descent. A detailed profile isn’t available for this race yet.

Race-day weather

At start

15°C

Peak during race

21°C

Humidity

72%

Chance of rain

21%

Wind

15 km/h

26 September in past years

Historical averages for 26 September ±3 days, 2016–2025, from 07:00 for 5 hours (70 days sampled). Source: Open-Meteo / ERA5.

Finish times by age group

No data yet. We’re collecting age-group results race by race.

Runner reviews

What time could you run here?Adjust your goal time for this course’s hills and typical race-day weather.Race time calculator →

Guides for this race

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Show your runners the course facts and race-day weather. Paste this code into your site; it displays the badge below and links to this page. It updates automatically when the race details change.

<a href="https://irun42.com/race/chicago-half" title="Chicago Half Marathon on iRun42"><img src="https://irun42.com/badge/chicago-half.svg" width="300" height="120" alt="Chicago Half Marathon: course, elevation and race-day weather on iRun42" /></a>

Plan your trip

Searches are set for Chicago and the race weekend.

Hotels near the start lineClosest first · 2027-09-25 → 2027-09-27Booking.com Flights to ChicagoArrive 2027-09-24, fly home 2027-09-28Google Flights Things to do in ChicagoTours and attractions in United States for the days around the raceKlook Mobile data in United StatesAn eSIM for maps, tracking apps and results on race dayAiralo Airport transfer from MDWChicago airport is about 14 km from the startKiwitaxi

Gear for this race

Lightweight running shoesBuilt for fast road miles Electrolyte tabletsIt often reaches 21°C during the race Energy gelsFuel for race day

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Around the same time

All races in September 2027 →