In 3 days · Sun, Oct 18, 2026
Don't let race day sneak up
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Sunday, October 18th, 2026
13860 Main St, Lemont IL
5K
45–61°F · some rain risk
See last 10 years
On this date: rain 2 of the last 10 years
2025
60–74°F
rain
2024
43–66°F
dry
2023
45–65°F
dry
2022
32–45°F
dry
2021
42–68°F
dry
2020
37–58°F
rain
2019
38–58°F
dry
2018
32–54°F
dry
2017
49–67°F
dry
2016
60–75°F
dry
Best months to race in Illinois →
Race-day ready
Everything but the shoes.
Real running socks, a bib belt, anti-chafe — the cheap upgrades that matter.
Race-day forecast · Sunday, Oct 18
Sunny · 44–63°F
Sunday, Oct 18starts near 44°F · 0% chance of rain · wind up to 15 mph
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