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Illinois 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 marathons in Illinois for 2026-2027! Our updated list features 15 exciting races across the region. Find your next race in Illinois below and join the running community at these great events!

March 2026
Mar
7
Sa

Cactus Classic Trail Races

Trail Run 10 km Half Marathon Marathon
Mar
28
Sa

Rend Lake Marathon

7 mi 13 mi 26 mi
April 2026
Apr
12
Su

Spring Chance BQ.2 Marathon

26 mi
Apr
23-25
Th - Sa

Illinois Race Weekend

5 km 10 km Half Marathon Marathon
Apr
25
Sa

Nauvoo Marathon

2 mi 26 mi
May 2026
May
3
Su

Chicagoland Spring Marathon

10 km Half Marathon Marathon
May
9
Sa

F^3 Cap Sauers Trail Marathon

Trail Run 10 mi 26 mi
May
9
Sa

Starved Rock Country Marathon

5 km 10 km Half Marathon Marathon
September 2026
Sep
20
Su

Fox Valley Marathon Races

5 km Half Marathon 20 mi Marathon
Sep
26
Sa

Belleville Main Street Marathon

13 mi 26 mi
Sep
27
Su

Quad Cities Marathon

5 km 10 km Half Marathon Marathon
October 2026
Oct
10
Sa

Des Plaines River Trail Races

Trail Run 13 mi 26 mi 50 km 50 mi
Oct
11
Su

Chicago Marathon

Marathon
Oct
24
Sa

Screaming Pumpkin

2 mi 7 mi 13 mi 26 mi
November 2026
Nov
14
Sa

Tunnel Hill 100 & 50 Mile Runs

Trail Run 26 mi 50 mi 100 km 100 mi