Ultra Marathons in Illinois 2025 - 2026

1000 Mile Challenge - 2025 Midwest

Edwardsville, Illinois

01 Jan 25 - 31 Dec 25

$31.74

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February Frosty Fifty

Bloomington to Decatur, Illinois

01 Feb 25 - 28 Feb 25

$27.50

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Frontline OCR

Byron, Illinois

24 May 25

$64.60 - $107.00

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The Ultimate SUCK

Cuba, Illinois

29 Aug 25 - 31 Aug 25

$190.74 - $419.95

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Trail Running University

Crystal Lake, Illinois

30 Dec 24 - 17 Mar 25

$133.50

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