Starved Rock Country Marathon

Ottawa, IL, USA • May 9, 2026

Race Day Weather

51°

69° high

Breezy

Dry

Comfortable temps, big temp swing, moderate wind

Mild 51°F temps at gun time mean comfortable early miles without overheating risk. Temps will climb significantly to 69°F by later miles, so expect fading conditions as the race progresses. Moderate winds around 12mph may affect pacing on open sections of the course.

Race day forecast available in 45 days

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Pre-raceRace windowPost-race

Course Map

FAQ

When is the 2026 Starved Rock Country Marathon?

The 2026 Starved Rock Country Marathon will be held on Saturday May 9, 2026.

Historical Weather

Based on 10 years of data

Avg Temp

69°F

L:53° H:69°

RunScore

Conditions

Rain Freq

30%

3 of 10 yrs

Wind12mph

Dew49°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2025 Starved Rock Country Marathon Clear conditions throughout the day. 2025	51°/82°	-	37°
2024 Starved Rock Country Marathon Partly cloudy throughout the day with early morning rain. 2024	52°/71°	-	43°
2023 Starved Rock Country Marathon Partly cloudy throughout the day with late afternoon rain. 2023	61°/73°	-	64°
2022 Starved Rock Country Marathon Clear conditions throughout the day. 2022	66°/84°	-	61°
2019 Starved Rock Country Marathon Partly cloudy throughout the day with afternoon rain. 2019	47°/51°	Light	38°
2018 Starved Rock Country Marathon Cloudy skies throughout the day with a chance of rain throughout the day. 2018	48°/55°	Light	49°
2017 Starved Rock Country Marathon Clear conditions throughout the day. 2017	52°/78°	-	48°
2016 Starved Rock Country Marathon Partly cloudy throughout the day with early morning rain. 2016	42°/47°	-	34°
2015 Starved Rock Country Marathon Partly cloudy throughout the day with rain. 2015	65°/76°	Light	66°
2014 Starved Rock Country Marathon Clear conditions throughout the day. 2014	51°/74°	-	45°