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Ultra Marathons found in Illinois in October
View all ↓Ultra Marathons in Illinois in October 2025
Find A Race is the US's favourite event listings site. Check out our list of October 2025 Ultra Marathons in Illinois below.
Race Calendar: Ultra Marathons found in October
🚀Boosted
Sweet Ride | Bike • Run • Walk
Willow Springs, Illinois
04 Oct 25
$32.80 - $54.00
🚀Boosted
1000 Mile Challenge - 2025 Midwest
Edwardsville, Illinois
01 Jan 25 - 31 Dec 25
$52.94
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1000 Mile Challenge - 2025 Midwest
Edwardsville, Illinois
01 Jan 25 - 31 Dec 25
$52.94
Sweet Ride | Bike • Run • Walk
Willow Springs, Illinois
04 Oct 25
$32.80 - $54.00
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