Illinois Marathon Calendar 2025-2026

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Explore the best marathons in Illinois for 2025-2026! Our updated list features 12 exciting races across the region. Find your next race in Illinois below and join the running community at these great events!

September 2025
Sep
6
Saturday

Last Chance BQ.2 Marathon

26 mi
Sep
21
Sunday

Fox Valley Marathon Races

5 km 13 mi 20 mi 26 mi
Sep
27-28
Sa - Su

Quad Cities Marathon

5 km 10 km 21 km 42 km
Sep
27
Saturday

Belleville Main Street Marathon

13 mi 26 mi
October 2025
Oct
11
Saturday

Des Plaines River Trail Races

Trail Run 21 km 42 km 50 km 50 mi
Oct
12
Sunday

Chicago Marathon

26 mi
Oct
25
Saturday

Screaming Pumpkin

2 mi 10 km 13 mi 26 mi
November 2025
Nov
8
Saturday

Tunnel Hill 100 & 50 Mile Runs

Trail Run 26 mi 50 mi 100 mi
Nov
8
Saturday

Springfield Marathon

10 km 13 mi 26 mi
March 2026
Mar
28
Saturday

Rend Lake Marathon

10 km 13 mi 26 mi
April 2026
Apr
23-25
Th - Sa

Illinois Race Weekend

5 km 10 km 21 km 42 km
May 2026
May
9
Saturday

F^3 Cap Sauers Trail Marathon

Trail Run 10 mi 26 mi
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