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Illinois Half Marathon Calendar 2026-2027

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Monthly updates for Illinois

Get new running races (and updates) in your inbox every month.

Explore the best half marathons in Illinois for 2026-2027! Our updated list features 50 exciting races across the region. Find your next race in Illinois below and join the running community at these great events!

October 2026
Oct
10
Sa

Des Plaines River Trail Races

Trail Run 13 mi 26 mi 50 km 50 mi
Oct
10
Sa

Sauk Valley Apple Cider Run

5 km 13 mi
Oct
17
Sa

Run Stephenson County

5 km 10 km Half Marathon
Oct
18
Su

Naperville Half Marathon

5 km 6 mi 13 mi
Oct
24
Sa

Screaming Pumpkin

2 mi 7 mi 13 mi 26 mi
Oct
25
Su

Haunted Halloween Half Marathon

5 km Half Marathon
November 2026
Nov
8
Su

Ooh Lala Chocolate Run Walk

5 km 10 km Half Marathon
Nov
21
Sa

Turkey Trot - Decatur

5 km 10 km Half Marathon
Nov
28
Sa

Bodies Race Company - Hammel Woods

5 km 10 km Half Marathon
Nov
28
Sa

Bodies Race Company - Shorewood

5 km 10 km Half Marathon