Chi Town Half Marathon
Chicago's April half runs almost entirely on the lakefront trail from Montrose Harbor, a flat certified course with lake wind as the main wildcard.
Every link above goes to the race, its timing provider, or an official registration partner. Last checked July 26, 2026.
Quick facts
- Flat paved lakefront trail course, certified as USATF IL22006NM.
- Start and finish at Montrose Harbor rather than downtown.
- Lake wind is the main pacing variable on an otherwise fast route.
- Half marathon and 10K share the same morning and trail corridor.
2027 Chi Town Half Marathon registration
Registration for the 2027 Chi Town Half Marathon runs through the official registration page at runsignup.com.
About the Chi Town Half Marathon
All Community Events has run this race for well over a decade, and it functions as the first real road half of the Chicago spring season. Pace groups cover a wide spread, and the trail setting keeps logistics far simpler than a downtown street race with closures.
Course
The route runs on paved lakefront trail out of Montrose Harbor with essentially no elevation change and no vehicle traffic, certified as USATF IL22006NM. The trail narrows in places, so getting into the right position in the first mile matters more here than it would on closed streets.
Race-day weather
Early April in Chicago is a coin flip. Starts in the 30s or 40s are normal, and an east wind off the lake can make the exposed trail feel considerably colder than the forecast number.
Past Chi Town Half Marathon dates and results
| Year | Date | Status | Results |
|---|---|---|---|
| 2027 | Saturday, April 3, 2027 | Upcoming | — |
Chi Town Half Marathon FAQ
When is the Chi Town Half Marathon?
The 2027 Chi Town Half Marathon is on Saturday, April 3, 2027.
How do I register for the Chi Town Half Marathon?
Register for the Chi Town Half Marathon through the official registration link: marathonscout.com/go/chi-town-half-marathon/register. It opens the race registration page at runsignup.com.
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