Find upcoming endurance races in Illinois, laid out by month. Scan the dates, line them up against your training, and find the race that fits your season.
Endurance Grid lists 415 races in Illinois, from October 2026 to October 2027 across 220 cities.
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Illinois runs a year-round race calendar, so there’s almost always a race near you. The calendar is busiest in November, October, and December, with races most often held in Chicago, Springfield, Greater Chicago, and Rockford.
Races in Illinois are mostly flat prairie and farmland across the central and southern parts of the state, with the Lake Michigan shoreline and skyline backdrop shaping courses around Chicago. Expect fast, flat road races statewide and scenic lakefront routes in and around the city.
Conditions vary widely by region across Illinois, so weather lives where it’s accurate — each race page shows its typical race-day high, low, and rain chance from NOAA climate normals for that venue and date.
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Search every race across all 50 states by sport, distance, or your zip code.
Endurance races in Illinois happening in the next 7 days, in date order. Browse what’s coming up and sign up soon.
+ 18 more happening in the next 7 days below — keep scrolling.