Endurance Grid lists 5 races in Decatur, Illinois, from September to November 2026.
The race calendar
The Decatur race calendar is busiest in September, October, and November. Every race here is a running event, so there's usually one near you. You'll see distances like 5K, 15K, 10K, and Half Marathon.
Weather on race day varies by time of year, so it lives where it’s accurate — each race page shows that race’s typical high, low, and rain chance from NOAA climate normals for its venue and date.
Population
70,368
as of 2023
City Elevation
677 ft
Nearest Airport
DEC
Decatur Airport
Time Zone
Central Time
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Just Outside Decatur