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Marathons in Illinois, United States

84 upcoming marathons listed in Illinois across 5 cities. Next: Heatwave Half Marathon - Greater Chicago on August 2, 2026.

84marathons upcoming
5cities
August 2, 2026Next race
Marathon, Half marathon, Ultra, 10K, 5K, RelayDistances
Elk Grove Village, Illinois, United States
02AUG
21.1K
Heatwave Half Marathon - Greater Chicago
Elk Grove Village, Illinois, United States
August 2, 2026 AUG
Illinois, United States
06AUG
ULTRA
Illinois State Fair Parade Run
Illinois, United States
August 6, 2026 AUG
Edwardsville, Illinois, United States
08AUG
ULTRA
Watershed Endurance 6Hr/3Hr Runs
Edwardsville, Illinois, United States
August 8, 2026 AUG
Chicago, Illinois, United States
15AUG
21.1K
Bagel Run 5K/10K/13.1 CHICAGO/EVANSTON
Chicago, Illinois, United States
August 15, 2026 AUG
Rockford, Illinois, United States
15AUG
42.2K
RAMP River Run – 3K, 5K, & 1/2 Marathon Run
Rockford, Illinois, United States
August 15, 2026 AUG
Elk Grove Village, Illinois, United States
15AUG
ULTRA
The Next 40M/50M Challenge
Elk Grove Village, Illinois, United States
August 15, 2026 AUG
Chicago, Illinois, United States
29AUG
21.1K
Sloth Run 5K/10K/13.1 CHICAGO/EVANSTON
Chicago, Illinois, United States
August 29, 2026 AUG
Wheaton, Illinois, United States
05SEP
21.1K
Naperville Trails Half Marathon & 10K
Wheaton, Illinois, United States
September 5, 2026 SEP
Illinois, United States
05SEP
ULTRA
Run the Gem
Illinois, United States
September 5, 2026 SEP
Forest City, Illinois, United States
05SEP
ULTRA
Temptation 200 Ultras
Forest City, Illinois, United States
September 5, 2026 SEP
Crystal Lake, Illinois, United States
06SEP
21.1K
Crystal Lake Half Marathon & 12K
Crystal Lake, Illinois, United States
September 6, 2026 SEP
Rockford, Illinois, United States
11SEP
ULTRA
Hobo Trail Runs 10k-25k-50k
Rockford, Illinois, United States
September 11, 2026 SEP
Chicago, Illinois, United States
12SEP
21.1K
Run for Mental Health 5K/10K/13.1 CHICAGO/EVANSTON
Chicago, Illinois, United States
September 12, 2026 SEP
Illinois, United States
12SEP
ULTRA
St. Jude Walk/Run and We Care Half Marathon
Illinois, United States
September 12, 2026 SEP
Flossmoor, Illinois, United States
12SEP
21.1K
The Hidden Gem Half Marathon 2026
Flossmoor, Illinois, United States
September 12, 2026 SEP
Chicago, Illinois, United States
13SEP
21.1K
Chicago Half Marathon
Chicago, Illinois, United States
September 13, 2026 Certified
Oak Park, Illinois, United States
13SEP
42.2K
Oak Park Marathon & Half Marathon
Oak Park, Illinois, United States
September 13, 2026 BQ Qualifier
Chicago, Illinois, United States
19SEP
21.1K
Divas Chicago Half Marathon & 5k
Chicago, Illinois, United States
September 19, 2026 SEP
Chicago, Illinois, United States
19SEP
42.2K
Run Like A Diva
Chicago, Illinois, United States
September 19, 2026 SEP
Bloomington, Illinois, United States
19SEP
ULTRA
St. Jude Walk
Bloomington, Illinois, United States
September 19, 2026 SEP
Saint Charles, Illinois, United States
20SEP
42.2K
Fox Valley Marathon
Saint Charles, Illinois, United States
September 20, 2026 SEP
Belleville, Illinois, United States
26SEP
42.2K
Belleville Main Street Marathon & Half Marathon
Belleville, Illinois, United States
September 26, 2026 SEP
Evanston, Illinois, United States
26SEP
ULTRA
Half Day at the Lake
Evanston, Illinois, United States
September 26, 2026 SEP
McHenry, Illinois, United States
26SEP
21.1K
Moraine Hills Run for the Hills
McHenry, Illinois, United States
September 26, 2026 SEP

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Cities

Place Marathons
Chicago 2
Naperville 2
Galena 1
Moline 1
Oak Park 1

Planning notes for Illinois, United States

Use this region page to shortlist 84 upcoming races by date, distance, registration path, and official source.

  • Next raceHeatwave Half Marathon - Greater Chicago on August 2, 2026
  • Busy monthsSeptember (22), October (21), November (13)
  • DistancesMarathon, Half marathon, Ultra, 10K, 5K, Relay
  • VerifyOpen each race page, then confirm details from its official, registration, course-map, or source link.

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