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Marathons found in Illinois in May

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Marathons in Illinois in May 2026

Find A Race is the US's favourite event listings site. Check out our list of May 2026 Marathons in Illinois below.

Race Calendar: Marathons found in May

🚀Boosted

RIVER TO RIVER MARATHON

Rockport, Illinois
Sat 02 May 26
$105.94
🚀Boosted

Starved Rock Country Marathon

Ottawa, Illinois
Sat 09 May 26
$43.40 - $107.00
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RIVER TO RIVER MARATHON

Rockport, Illinois
Sat 02 May 26
$105.94

Chicagoland Spring Marathon, Half Marathon & 10K

Schaumburg, Illinois
Sun 03 May 26
$51.74 - $179.99

F^3 Cap Sauers Trail Marathon & 10 Mile

Palos Hills, Illinois
Sat 09 May 26
$64.85 - $70.15

Starved Rock Country Marathon

Ottawa, Illinois
Sat 09 May 26
$43.40 - $107.00
Showing 1-4 of 4 results

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