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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📍Chicago - Sunday November 1, 2026
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😄 Why We Like This Run
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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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