1410 Special Olympics Drive, Chicago IL
Saturday, January 31st, 2026
🏅 Event Overview
The 17th 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.
📍 Event Details
- Date: 2026-01-31
- Location: 1410 Special Olympics Drive, Chicago, IL
- Registration Link: Register Here
👕 Participant Perks
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.
🕒 Race Schedule
- Half Marathon Start: 10 a.m., consists of self-seeded waves in quick succession.
- 5k Start: 10:30 a.m.
- Course Closes: 1:30 p.m.
🎉 Afterparty and Photos
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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