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Illinois Half Marathon Calendar 2026-2027

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Monthly updates for Illinois

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Explore the best half marathons in Illinois for 2026-2027! Our updated list features 49 exciting races across the region. Find your next race in Illinois below and join the running community at these great events!

May 2026
May
31
Su

North Shore Classic

5 km Half Marathon
June 2026
Jun
27
Sa

Hoffman Estates Stars and Stripes Half Marathon

5 km 10 km Half Marathon
July 2026
Jul
17-19
Fr - Su

CMAR Trail Races

Trail Run Half Marathon 50 km
Jul
18
Sa

Christmas in July Half Marathon

5 km 13 mi
Jul-Aug
31-1
Fr - Sa

Run Mahomet

5 km 10 km Half Marathon
August 2026
Aug
15
Sa

RAMP River Run – 1/2 Marathon

3 km 5 km Half Marathon
Aug
22-23
Sa - Su

Shawnee Hills Trail Races

Trail Run 13 mi 50 km 100 km 100 mi
Aug
22
Sa

Comlara Trail Run

Trail Run 4 mi 13 mi 26 mi 51 mi
September 2026
Sep
5
Sa

Naperville Trails Half Marathon

Trail Run 10 km Half Marathon
Sep
6
Su

Crystal Lake Half Marathon

7 mi 13 mi
Sep
12
Sa

The Hidden Gem Half Marathon

Half Marathon
Sep
20
Su

Fox Valley Marathon Races

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

Quad Cities Marathon

5 km 10 km Half Marathon Marathon
Sep
26
Sa

Belleville Main Street Marathon

Half Marathon 26 mi
Sep
26
Sa

Stone Bridge Half Marathon

5 km 13 mi
Sep
26
Sa

Moraine Hills Run for the Hills

5 km 10 km Half Marathon
Sep
27
Su

Chicago Half Marathon

5 km Half Marathon
October 2026
Oct
3
Sa

Long Grove's Prairie State Half Marathon

5 km 10 km Half Marathon
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