RunEmu

Marathon Races in Illinois

Browse 81+ upcoming marathon races in Illinois.

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Cactus Classic Trail Race

Mar 7, 2026
Manito, IL
26.2M13.1M10K
47°
29°
12%

Time to Paddy 5k/10k & Lucky 13.1 - Greater Chicago

Mar 7, 2026
Chicago, IL
50M13.1M6.2M3.1M1M
44°
29°
11%

Cactus Classic Trail Races

Mar 7, 2026
Manito, IL
Marathon1/2 Marathon10K
47°
29°
12%

Time to Paddy 5k/10k & Lucky 13.1 - Greater Chicago

Mar 7, 2026
Shorewood, IL
50M13.1M6.2M3.1M1M
44°
27°
11%

Deer Park St. Paddy's 5K & 10K Run/Walk

Mar 15, 2026
Deer Park, IL
100M10K5K
44°
27°
12%

Schon Park 3/6/9 Endurance Runs

Mar 28, 2026
Glen Carbon, IL
9HR6HR3HR
63°
41°
18%

Rend Lake Marathon

Mar 28, 2026
Grayslake, IL
26.2M13.1M6.55M
49°
31°
13%

Rend Lake Marathon

Mar 28, 2026
Warren, IL
26.2M13.1M6.5M
52°
33°
14%

Footsteps for Families: 5k, Walk & Kids Run

Mar 28, 2026
Machesney Park, IL
100M5K1M
48°
29°
12%

Clinton Lake Ultra

Mar 28, 2026
Clinton, IL
30M10M
58°
36°
15%

Clinton Lake Ultra

Mar 28, 2026
Dewitt, IL
30M10M
57°
35°
13%

Potawatomi Trail Runs

Apr 9, 2026
Pekin, IL
200M150M100M50M30M10M
62°
40°
16%

DoNot Stop Half Marathon (5k/10k)- Greater Chicago

Apr 11, 2026
Chicago, IL
50M13.1M6.2M3.1M1M
58°
40°
14%

Spring Chance BQ.2 Marathon

Apr 12, 2026
Geneva, IL
26.2M
58°
37°
14%

Earth Day 50K

Apr 18, 2026
Crystal Lake, IL
31.1M15M5M
58°
38°
17%

Braveheart CAC 4th Annual Superhero 5k Run/ Walk

Apr 18, 2026
Kewanee, IL
200M5K
61°
38°
18%

Loud Thunder 50

Apr 18, 2026
Illinois City, IL
50M31.1M1/2 Marathon
62°
39°
15%

Earth Day 50k/15 Mile/5 Mile

Apr 18, 2026
Crystal Lake, IL
31.1M15M5M
58°
38°
17%

Riverboat Marathon Series - Day 7

Apr 19, 2026
Vienna, IL
26.2M13.1M
71°
48°
19%

Illinois Race Weekend

Apr 25, 2026
Champaign, IL
26.2M26.2M13.1M10K
66°
45°
19%
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