10K races in Illinois — October 2026

45 upcoming 10K races in Illinois during October 2026.

Browse by state

All United StatesAlabamaAlaskaArizonaArkansasCaliforniaColoradoConnecticutDelawareFloridaGeorgiaHawaiiIdaho

Other months in Illinois

JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberNovemberDecember

This calendar in numbers

This calendar currently lists 45 upcoming events, from Oct 3, 2026 to Oct 31, 2026. October is the busiest month, with 45 events scheduled. Events are spread across 36 different locations; Chicago hosts the most (10). Course distances range from 5 km to 10 km.