Illinois Marathon Calendar 2025-2026

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Explore the best marathons in Illinois for 2025-2026! Our updated list features 10 exciting races across the region. Find your next race in Illinois below and join the running community at these great events!

September 2025
Sep
21
Sunday

Fox Valley Marathon Races

5 km Half Marathon 20 mi Marathon
Sep
27-28
Sa - Su

Quad Cities Marathon

5 km 10 km Half Marathon Marathon
Sep
27
Saturday

Belleville Main Street Marathon

Half Marathon Marathon
October 2025
Oct
11
Saturday

Des Plaines River Trail Races

Trail Run Half Marathon Marathon 50 km 50 mi
Oct
12
Sunday

Chicago Marathon

26 mi
Oct
25
Saturday

Screaming Pumpkin

2 mi 7 mi Half Marathon Marathon
November 2025
Nov
8
Saturday

Springfield Marathon

10 km Half Marathon Marathon
March 2026
Mar
28
Saturday

Rend Lake Marathon

11 km Half Marathon Marathon
April 2026
Apr
23-25
Th - Sa

Illinois Race Weekend

5 km 10 km Half Marathon Marathon
May 2026
May
3
Sunday

Chicagoland Spring Marathon

10 km Half Marathon Marathon
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