There are 538 running races in Illinois in 2026 across 275 cities. The next upcoming race is the C-U Triathlon in Champaign on July 19. Popular distances include 5K races, 10K races, half marathons.

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Chicago 134 Springfield 29 Bloomington 18 Aurora 16 Rockford 16 Palatine 15 Normal 14 Elk Grove Village 14 Wheaton 13 Joliet 12 Hudson 11 Decatur 11 Belleville 10 Lisle 9 Crystal Lake 9 Evanston 9 Peoria 9 Elgin 8 Champaign 8 Lemont 8 Urbana 7 Edwardsville 7 Naperville 7 Plainfield 7 Shorewood 7 Herrin 6 Ottawa 6 Downers Grove 6 Roscoe 6 New Lenox 6

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