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Largest half marathons in Illinois

Half marathons in Illinois ranked by finishers in each race's most recent scored edition.

26
races ranked
#RaceWhereNext dateFinishersMedian finish
1Christmas in July Half Marathon and 5K (Chicago area)2026 editionElk Grove Village, IllinoisTBA5222:25:21
2Starved Rock Country Marathon2026 editionOttawa, IllinoisMay 8, 20273732:17:23
3Heatwave Half Marathon/5K/10K - Greater Chicago2026 editionGreater Chicago, IllinoisAug 1, 20272542:12:32
4Galena River Fall Half Marathon & 8k2024 editionGalena, IllinoisOct 31, 20261861:59:43
5RAMP River Run – 3K, 5K, & 1/2 Marathon Run2026 editionRockford, IllinoisTBA1542:07:09
6Fly with the Eagles Half Marathon2026 editionMurphysboro, IllinoisFeb 13, 20271522:04:54
7Stone Bridge Half Marathon and 5k2025 editionRoscoe, IllinoisSep 26, 20261252:13:27
8Rend Lake Marathon2026 editionBenton, IllinoisMar 27, 20271192:15:21
914th Annual Springfield Marathon & Harvest Wind Half Marathon & 10K2025 editionNew Berlin, IllinoisNov 7, 20261132:10:29
10Divas Chicago Half Marathon and 5k2026 editionChicago, IllinoisTBA1072:32:22
11WARRIOR RUSH 5K - 10K - Half Marathon 13.1 (Chicagoland)2026 editionWheaton, IllinoisTBA952:14:47
12Loud Thunder 502026 editionIllinois City, IllinoisTBA913:11:20
13Hometown Half Marathon/5K/10K - Greater Chicago2026 editionChicago, IllinoisMay 8, 2027882:01:36
14Shawnee Hills Trail Races2026 editionOzark, IllinoisTBA833:32:43
15Time to Paddy 5K/10K & Lucky 13.1 - Greater Chicago2026 editionGreater Chicago, IllinoisFeb 27, 2027752:02:13
16Lake Sara Dam Run 5K, 8 Mile & Half Marathon2026 editionEffingham, IllinoisTBA692:05:14
17Allerton Races2026 editionMonticello, IllinoisTBA652:19:15
18DoNot Stop Half Marathon/5K/10K - Greater Chicago2026 editionGreater Chicago, IllinoisApr 3, 2027592:04:26
192026 Turkey Trot2025 editionDecatur, IllinoisNov 21, 2026542:04:59
20Spooky Sprint - Greater Chicago2025 editionShorewood, IllinoisOct 25, 2026482:16:38
21Riverview Ramble Half Marathon2025 editionMount Carmel, IllinoisOct 31, 2026422:03:30
22Time Travel Half-Marathon/5K/10K - Greater Chicago2026 editionGreater Chicago, IllinoisJan 2, 2027341:59:18
23Run Stephenson County2025 editionOrangeville, IllinoisOct 17, 2026202:07:29
24Run for Heroes Half Marathon, 10K, 5K hosted by Revive Vienna2026 editionVienna, IllinoisTBA182:06:32
25Ondessonk Trail Races2026 editionOzark, IllinoisTBA142:44:51
26Miles of Madness2025 editionPekin, IllinoisTBA71:53

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