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Duathlons found in Illinois in Fall

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Duathlons in Illinois in Fall 2025

Find A Race is the US's favourite event listings site. Check out our list of Fall 2025 Duathlons in Illinois below.

Race Calendar: Duathlons found in Fall

🚀Boosted

Carlyle Lake Triathlon

Carlyle Township, Illinois
21 Sep 25
$81.66 - $241.79
🚀Boosted

Trail Mix Off-Road Duathlon and Mountain Bike Race

Rockford, Illinois
05 Oct 25
Free - $85.80
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Carlyle Lake Triathlon

Carlyle Township, Illinois
21 Sep 25
$81.66 - $241.79

Trail Mix Off-Road Duathlon and Mountain Bike Race

Rockford, Illinois
05 Oct 25
Free - $85.80
Showing 1-2 of 2 results