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| Boys Class 3A Starting Box Assignments |  
| Box # | Schools |  
| 1 | Mt. Prospect Lincoln |  
| 2 | Danville North Ridge |  
| 3 | Geneseo MS |  
| 4 | Balagot, Michael - Antioch Gonzalez, Tyler - Vernon Hills Hawthorn South
 McDonald, Jimmy - Vernon Hills Hawthorn South
 Peters, Brad - Cary
 Qualls, Dylan - McHenry MS
 Warren, Derek - Cary
 |  
| 5 | Batavia Rotolo |  
| 6 | Bolingbrook Jane Addams |  
| 7 | Shorewood Troy |  
| 8 | Freese, Jordan - Minooka Guzman, Alex - Joliet Gompers
 Long, Zach - Sugar Grove Kaneland Harter
 Marks, Riley - DeKalb Huntley
 Occhipinti, Daniel - Sugar Grove Kaneland Harter
 |  
| 9 | Wilmette JHS |  
| 10 | Oswego Plank |  
| 11 | Edwardsville Liberty |  
| 12 | Epperson, Judah - Flossmoor Parker Gardner, Brett - Frankfort Hickory Creek
 Holbrook, Kevon - Bourbonnais UGC
 Slager, Ty - Frankfort Hickory Creek
 Warner, Acque - Flossmoor Parker
 |  
| 13 | New Lenox Liberty |  
| 14 | Woodridge Jefferson |  
| 15 | Arlington Heights South |  
| 16 | Granzetto, Julian - Evanston Haven Guerrero, Javier - Buffalo Grove Cooper
 Parduhn, Michael - Mundelein Fremont
 Rodriguez, Miguel - Wheeling London
 Spies, Jake - Buffalo Grove Cooper
 |  
| 17 | Lake in the Hills Marlowe |  
| 18 | Algonquin Heineman |  
| 19 | Freeport Carl Sandburg |  
| 20 | Borich, Payton - Urbana MS Carrel, Tyler - Urbana MS
 Myers, Jacob - Normal Kingsley
 Nepomuceno, Josh - Bloomington Evans
 Wolford, Zach - Bloomington Evans
 |  
| 21 | Chatham Glenwood |  
| 22 | Belvidere Central |  
| 23 | Yorkville |  
| 24 | Akal, Caden - Alton Becker, Isaac - Springfield Franklin
 Boughter, Kyle - Springfield Franklin
 Formea, Will - Springfield Franklin
 Ghere, Jake - Mattoon
 |  
| 25 | Mahomet-Seymour |  
| 26 | Arlington Heights Thomas |  
| 27 | Jacksonville Turner |  
| 28 | Allen, Jon - Belvidere South Friske, Noah - Rockford Lincoln
 Martinez, Mikio - Sterling Challand
 Moorman, Isaiah - Sterling Challand
 Sandefer, Calvin - Sterling Challand
 |  
| 29 | Normal Parkside |  
| 30 | Barrington Prairie |  
| 31 | New Lenox Martino |  
| 32 | Dueschle, Andrew - Lemont Old Quarry Hoak, Patrick - Homer Glen Homer
 Johnson, Michael - Des Plaines Friendship
 O'Connor, Jack - Homer Glen Homer
 Paske, Donovan - Homer Glen Homer
 |  
| 33 | Homewood Hart |  |  
 Class HistoryThe IESA sanctioned Cross-Country in 1979. There was one class of Cross-Country until 1997 when the activity was split into A and AA based upon enrollment. It was split in 2012 into three classes of 1A, 2A and 3A. In 2023 it was split again into the current four classes of 1A, 2A, 3A and 4A. How Class Split is Determined |