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Half Marathon Races in Illinois

Explore Half Marathon races in Illinois during August 2025.

By Month

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Top Events

Run Mahomet

Run Mahomet

5K10KHalf-Marathon

Mahomet, IL

Date TBD

Ramp River Run 3k, 5k, & 1/2 Marathon Run

Ramp River Run 3k, 5k, & 1/2 Marathon Run

5KHalf-Marathon

Rockford, IL

Date TBD

6:00 AM CDT