# 18th Annual F^3 Lake Half Marathon & 5k

- **When:** Fri, Jan 29, 2027 · 6:00 PM CST
- **Where:** 1410 Special Olympics Drive, Chicago, IL, 60614
- **Event page:** https://runthis.run/event/rs-126250-18th-annual-f-3-lake-half-marathon-5k

## Registration

Register on the event's own site: https://runsignup.com/Race/IL/Chicago/F3LakeHalfMarathon5k?aflt_token=58wBqomPr6bPwa1YDhuKo0IQvrNCjzTq

## Description

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. A must for anyone preparing for a spring marathon or just resolving to stay fit throughout the new year. F^3 sold out in 2016-2020 and 2023-present.

Every registrant will once again receive one of our great hoodies and a medal! We will return to the warm confines of Soldier Field's United Club! The UC opens at 8 a.m. Gear check is available. The half marathon starts at 10:01 a.m. and consists of self-seeded waves in quick succession. The 5k is scheduled for 10:29 a.m. Courses close at 1:30 p.m.

After the race, head to Weathermark Tavern for the afterparty! 1503 S. Michigan Ave. Free participant photos are always uploaded to flashframe.io

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Source: [https://runthis.run/event/rs-126250-18th-annual-f-3-lake-half-marathon-5k](https://runthis.run/event/rs-126250-18th-annual-f-3-lake-half-marathon-5k) — data from Run This (runthis.run).