18th Annual F^3 Lake Half Marathon & 5k
Updated
Saturday, January 30, 2027, first start 10:01 AM, in Chicago (1410 Special Olympics Drive). Distances: 5K, Half marathon. Entry from $59 to $90; the Half marathon goes from $90 to $99 after October 26.
- Date
- Saturday, January 30, 2027
- Start time
- 10:01 AM (earliest wave)
- Location
- 1410 Special Olympics Drive, Chicago, IL 60614
- Area
- Chicago (city), Chicago
- Distances
- 5KHalf marathon
- Course
- Road or path
- Price
- $59 to $90 plus the platform's processing fee
- Next price increase
- Monday, October 26, 2026: Half marathon $90 → $99
- Registration
- Open. Opened January 30, online signup closes Saturday, January 30, 2027
How to register
Registration is on RunSignup. Pick your distance, add any extras, and you'll get a confirmation email with your bib details. Sign up by October 26 to pay $90 instead of $99.
Register on RunSignup →Race website
Course and race notes
The 18th Annual F^3 Lake Half Marathon & 5k is Chicago's Original Winter Half Marathon. Each year, thousands of runners flock to this community-built event, gathering in the warmth of Soldier Field's United Club before tackling wind & weather along a lakefront course that features splits every 5km.
From the race's own listing. Check the race website for the course map and parking.
Source: RunSignup public race API, refreshed 2026-10-17. Details can change; the registration page is the final word.