Illinois Half Marathon Calendar 2025-2026

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Explore the best half marathons in Illinois for 2025-2026! Our updated list features 62 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 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
Sep
27
Saturday

Stone Bridge Half Marathon

5 km 13 mi
Sep
27
Saturday

The Best Races - Evanston

5 km 10 km 13 mi
Sep
27
Saturday

The Best Races - Chicago Loop

5 km 10 km 13 mi
Sep
28
Sunday

Chicago Half Marathon

5 km 13 mi
October 2025
Oct
4
Saturday

Long Grove's Prairie State Half Marathon

5 km 10 km 13 mi
Oct
4
Saturday

The Best Races - Evanston

5 km 10 km 13 mi
Oct
11
Saturday

Des Plaines River Trail Races

Trail Run 13 mi 26 mi 50 km 50 mi
Oct
11-12
Sa - Su

Farmdale Trail Run

Trail Run 10 km 13 mi ... 50 mi 100 mi
Oct
18
Saturday

Spooky Sprint - Chicago

5 km 10 km 13 mi
Oct
18
Saturday

Run Stephenson County

5 km 10 km 13 mi
Oct
18
Saturday

Shake Your Trail Feather Trail Run

Trail Run 5 km 10 km 13 mi 50 km
Oct
18
Saturday

Country Sole Half Marathon

5 km 10 km 13 mi
Oct
18
Saturday

The Best Races - Evanston

5 km 10 km 13 mi
Oct
19
Sunday

Naperville Half Marathon

5 km 10 km 13 mi
Oct
25
Saturday

Screaming Pumpkin

2 mi 10 km 13 mi 26 mi
Oct
26
Sunday

Haunted Halloween Half Marathon

5 km 13 mi
November 2025
Nov
1
Saturday

The Best Races - Evanston

5 km 10 km 13 mi
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