F3 Lake Half Marathon
Chicago, Illinois, United States
Jan 30, 2027 - Saturday
5k, Half-marathon
Race Information
The F3 Lake Half Marathon is a fast and flat half marathon along the lakeshore. Runners start out at Montrose Harbor and run an out and back course. One of Chicago’s few remaining independently-owned large races, the annual F3 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 which features splits every 5km. A must for anyone preparing for a spring marathon, or just resolving to stay fit.
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👍 Run Pick of the Month: Soldier Field 10
📍Chicago - Saturday May 23, 2026
💸 SAVE 10% On Your Entry. Use Code 26SFCC
😄 Why We Like This Run
✅ Enjoy sweeping vistas of the Chicago skyline
✅ Cross the finish line ON Soldier Field!
✅ The ultimate post-race tailgate
Make your miles matter on Memorial Day weekend. Honor the fallen and challenge yourself with an unforgettable finish on the field.
Take in sweeping views of the Chicago skyline and Lake Michigan as you navigate an inspiring course that culminates in an adrenaline-fueled finish on the iconic 50 yard line of Soldier Field.
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Race Facts
Race Size: 1,000 - 5,000
Elevation: Fast and Flat
Course Type: Road
Boston Qualifier: No
Kids Run: No
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