Illinois Half Marathon Calendar 2025-2026

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Explore the best half marathons in Illinois for 2025-2026! Our updated list features 64 exciting races across the region. Find your next race in Illinois below and join the running community at these great events!

October 2025
Oct
25
Saturday

Screaming Pumpkin

2 mi 10 km 13 mi 26 mi
Oct
26
Sunday

Haunted Halloween Half Marathon

5 km 13 mi
January 2026
Jan
31
Saturday

F3 Lake Half Marathon

5 km 13 mi
March 2026
Mar
21
Saturday

Skunk Ape 806/314 Trail Race

Trail Run 13 mi 33 mi
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