Illinois Half Marathons
Trail Half Marathons (T)
Official Walker Friendly Half Marathons in Illinois
18:32 mile / 4 Hour Minimum course time limit= (W)
Symbol only applies to half marathon events
Does NOT meet the Walker Friendly 4 hour minimum (18:32 / mi) = Not Walker Friendly (NWF)
Illinois Half Marathons 2026 & 2025
Date
Location
Sat Jan 31, 2026
Chicago, IL
Sat Feb 8, 2025
Sun Mar 15, 2026 (NWF)
Sat Mar 29, 2025 (W)
Marion, IL
Cary, IL
Lawrenceville, IL
Sat Apr 4, 2026 (NWF)
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Sat Apr 11, 2026 (NWF)
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Sun Apr 19, 2026 (NWF)
Sun Apr 19, 2026 (W)
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Sat Apr 25, 2026 (NWF)
Chi Town Half Marathon & 10k 2026 Registration
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Lincoln Presidential Half Marathon
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Naperville Women's Half Marathon
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Mainly Marathons Riverboat Series Full, Half, 50/10/5k (Day 7)
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Chicago, IL
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Springfield, IL
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Naperville, IL
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Vienna, IL
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Champaigne, IL
Sat May 2, 2026
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Sat May 3, 2025
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Sun May 4, 2025
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Sun May 3, 2026 (W)
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Sat May 10, 2025
Sat May 9, 2026
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Sun May 11, 2025 (NWF)
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Sun May 17, 2026
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Sat May 30, 2026 (T)
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Sun May 31, 2026
Hometown Half Marathon, 10k, 5k Chicago
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Lincoln Way Half Marathon & 10k
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Chicagoland Spring Marathon, Half Marathon, 10k 2026 Registration
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Starved Rock Country Marathon & Half Marathon
Bridge the Gap to Health Half Marathon
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Quad Cities Distance Classic Half Marathon & 5k 2025 Registration
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Life Time Chicago Spring Half Marathon & 10k
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Red Cedar Trail Half Marathon at Giant City State Park
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Chicago, IL
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Frankfort, IL
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St. Charles, IL
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Schaumburg, IL
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Ottawa, IL
Quincy, IL
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Rock Island, IL
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Chicago, IL
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Makanda, IL
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Highland Park, IL
Sun Jun 7, 2026
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Sat Jun 7, 2025
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Sat Jun 28, 2025 (NWF)
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River Bottom Country Runs Half Marathon, 5k & Relay
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Stars & Stripes Half Marathon, 10k, 5k 2025 Registration
Chicago, IL
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Deer Creek, IL
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Hoffman Estates, IL
Tue Jul 14, 2026
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Sat Jul 19, 2025
Fulton, IL
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Elk Grove, IL
Sat Aug 2, 2025
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Sat Aug 16, 2025
Mahomet, IL
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Rockford, IL
Sun Sep 6, 2025 (NWF)
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Sun Sep 21, 2025 (NWF)
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Sun Sep 28, 2025 (NWF)
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Sat Sep 27, 2025
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Sat Sep 27, 2025
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Sat Sep 27, 2025
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Sun Sep 28, 2025 (NWF)
Naperville Trails Half Marathon 2025 Registration
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Fox Valley Marathon, Half Marathon & 20 mile
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TBK Bank Quad Cities Marathon, Half Marathon, 5k, Relay
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Belleville Main Street Marathon & Half Marathon
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YMCA Stonebridge Marathon, Half Marathon, 5k
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Moraine Hills Run for the Hills
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Wheaton, IL
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St. Charles, IL
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Moline, IL
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Belleville, IL
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Roscoe, IL
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McHenry, IL
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Chicago, IL
Sat Oct 4, 2025
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Sat Oct 18, 2025 (NWF)
Sun Oct 19, 2025 (NWF)
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Sat Oct 11, 2025 (T) (W)
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Sat Oct 25, 2025
Prairie State Marathon, Half Marathon, 5k 2025 Registration
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Country Soul Half Marathon, 10k, 5k 2025 Registration
Endeavor Health Naperville Half Marathon, 10k, 5k
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Des Plaines River Trail Races Half Marathon, Marathon, 50 mi
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Galena River Fall Half Marathon 2025 Registration
Long Grove, IL
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Chicago, IL
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Naperville, IL
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Vernon Hills, IL
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Galena, IL
Sun Nov 2, 2025 (NWF)
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Sun Nov 2, 2025 (NWF)
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Sat Nov 8, 2025
Sat Nov 29, 2025 (NWF)
LeRoy, IL
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Geneva, IL
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New Berlin, IL
Schaumburg, IL
No Illinois Half Marathons in December at This Time
Illinois Half Marathon Calendar event dates in dark grey are delinquent dates not updated by the race organizer yet. We strive to have dates 1 year out for Illinois half marathons, but have no control of when they set, announce or update their dates.
Illinois Half Marathons
The Illinois Half Marathon Calendar is a complete simplistic listing of Illinois Half Marathons. Currently the Illinois half marathon schedule has 2025 Illinois half marathons and 2026 Illinois half marathons as they roll in. Illinois half marathons 2025 & Illinois half marathons 2026 also identify trail half marathons and walker friendly half marathons by a (T) symbol and a (W) symbol. The (T) means it is a TRUE trail half marathon 21k (off road, switchbacks, etc) and a (W) means it is truly "official walker friendly" requiring the half marathon to allow a minimum of 18:32 mile pace, minimum 4 hours for participants to finish the 13.1 mile distance.
The Illinois half marathon schedule of course features races such as the Chicago Half Marathon, Biggest Loser Run/Walk Chicago, and Rock'n'roll Chicago half marathon, and also a complete listing of Chicago half marathons, Rockford half marathons, Quad Cities half marathons, Schaumburg half marathons, Southern Illinois half marathons, Northern Illinois half marathons, and many more 1/2 marathons in Illinois.