100K races in Illinois

Find the list of upcoming 100K races in Illinois races below.

4 races found

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Rock River Madness 2026: Dixon, Illinois

Distance(s): 100K, 50K, Half Marathon

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Everybody Rides 2026

St. Charles, IL

Distance(s): 100K, 50K

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KMC Sage City Classic

Distance(s): 100K, 50K

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Capital City Century

Distance(s): 100 Mile, 100K

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