| Event | Rank | Mark | By | Meet |
| B-300H | 1 | 37.33 | Payton, Imani (2014) (North Lawndale Charter, IL) (US#27) | IL 3A Boys State Finals(IL), 2014-05-31(#2) |
| B-300H | 2 | 37.34 | Ege, Lucas (2015) (Burlington Central, IL) (US#29) | IL 2A Boys State Finals(IL), 2014-05-31(#1) |
| B-300H | 3 | 38.20 | Hickman, Gary (2014) (Cahokia, IL) | IL 2A Boys State Finals(IL), 2014-05-31(#2) |
| B-300H | 4 | 38.22 | Nauert, Dylan (2014) (Kaneland , IL) | IL 2A Boys State Finals(IL), 2014-05-31(#3) |
| | | National Elites above. State Elites below | | |
| B-300H | 5 | 38.44 | Johnson, Kalvin (2015) (Centralia, IL) | Collinsville Invitational(IL), 2014-05-10(#1) |
| B-300H | 6 | 39.18 | Cable, Aaron (2015) (Rochester, IL) | Jokisch-Gardonne Invitational(IL), 2014-05-03(#1) |
| B-300H | 7 | 39.27 | Robertson, Brock (2014) (Kaneland , IL) | IL 2A Boys State Finals(IL), 2014-05-31(#4) |
| B-300H | 8 | 39.40 | Gieson, JD (2015) (Dixon, IL) | IL 2A Burlington Central Boys Sectional(IL), 2014-05-23(#3) |
| B-300H | 9 | 39.43 | Thomas, Joel (2014) (Lanphier, IL) | IL 2A Springfield Southeast Boys Sectional(IL), 2014-05-23(#1) |
| B-300H | 10 | 39.46 | Session, Korrion (2015) (Cahokia, IL) | IL 2A Boys State Finals(IL), 2014-05-31(#5) |
| B-300H | 11 | 39.63 | Magradze, Sandro (2014) (Johnsburg, IL) | IL 2A Grayslake Central Sectional(IL), 2014-05-23(#1) |
| B-300H | 12 | 39.80 | Billington, Michael (2014) (Bloomington Central Catholic, IL) | IL 2A Boys State Finals(IL), 2014-05-31(#6) |
| B-300H | 13 | 39.95 | Leitschuh, Devon (2014) (Greenville, IL) | IL 2A Boys State Finals(IL), 2014-05-31(#8) |
| B-300H | 14 | 39.96 | Schnieder, Logan (2014) (Sycamore, IL) | IL 2A Burlington Central Boys Sectional(IL), 2014-05-23(#5) |
| B-300H | 15 | 39.97 | Deming, Cole (2015) (Hillsboro, IL) | IL 1A Boys State Finals (IL), 2014-05-31(#6) |
| B-300H | 16 | 40.18 | Kokos, Bailey (2015) (Dunlap, IL) | IL 2A Dunlap Boys Sectional(IL), 2014-05-22(#1) |
| B-300H | 17 | 40.21 | Patton, Brykell (2014) (Mount Vernon, IL) | IL 2A Herrin Boys Sectional(IL), 2014-05-22(#4) |
| B-300H | 18 | 40.25 | Hernandez, Alex (2015) (Belvidere, IL) | IL 2A Burlington Central Boys Sectional(IL), 2014-05-23(#6) |
| B-300H | 19 | 40.29 | Elicke, Carzelle (2014) (Dunbar Vocational Academy, IL) | Chicago Public League Championships(IL), 2014-05-10(#3) |
| B-300H | 20 | 40.31 | Pranka, Drew (2015) (Princeton, IL) | IL 2A Boys State Prelims(IL), 2014-05-30(#11) |
| B-300H | 21 | 40.34 | Walters, Eric (2015) (LaSalle-Peru, IL) | Lanphier Invitational(IL), 2014-04-26(#1) |
| B-300H | 22 | 40.44 | Cash, Carsen (2014) (Marion, IL) | Belleville West Invitational(IL), 2014-04-12(#6) |
| B-300H | 23 | 40.48 | Mead, Lenny (2016) (Princeton, IL) | Mendota Co-Ed Invitational(IL), 2014-05-02(#1) |
| B-300H | 24 | 40.49 | Urycki, Cal (2014) (Metamora, IL) | IL 2A Dunlap Boys Sectional(IL), 2014-05-22(#2) |
| B-300H | 25 | 40.53 | Hempel, Will (2014) (Hampshire, IL) | IL 2A Grayslake Central Sectional(IL), 2014-05-23(#2) |
| B-300H | 26 | 40.54 | Lafferty, Tyler (2014) (East Alton-Wood River, IL) | IL 2A Springfield Southeast Boys Sectional(IL), 2014-05-23(#4) |
| B-300H | 27 | 40.58 | Williams, Trevahn (2014) (Mascoutah, IL) | Mascoutah Boys Invitational(IL), 2014-04-25(#2) |
| B-300H | 28 | 40.71 | Henry, Ryan (2014) (Saint Viator, IL) | IL 2A Grayslake Central Sectional(IL), 2014-05-23(#3) |
| B-300H | 29 | 40.75 | Garcia, Edgar (2015) (Sycamore, IL) | IL 2A Burlington Central Boys Sectional(IL), 2014-05-23(#7) |
| B-300H | 30 | 40.88 | Binion, Dylan (2016) (Erie-Prophetstown, IL) | IL 1A Boys State Prelims(IL), 2014-05-29(#15) |
| B-300H | 31 | 40.94 | Mielke, Jordan (2014) (Geneseo, IL) | IL 2A Mendota Boys Sectional(IL), 2014-05-23(#3) |
| B-300H | 32 | 41.01 | Musabji, Yash (2016) (Belvidere, IL) | IL 2A Burlington Central Boys Sectional(IL), 2014-05-23(#8) |
| B-300H | 33 | 41.24 | Woods, Darrell (2016) (Herrin, IL) | IL 2A Herrin Boys Sectional(IL), 2014-05-22(#6) |
| B-300H | 34 | 41.43 | Reed, Austin (2014) (Murphysboro, IL) | IL 2A Herrin Boys Sectional(IL), 2014-05-22(#7) |
| B-300H | 35 | 41.45 | Gyuricza, Zach (2015) (Saint Viator, IL) | IL 2A Grayslake Central Sectional(IL), 2014-05-23(#4) |
| B-300H | 36 | 41.66 | Wells, Keondre (2017) (Cahokia, IL) | Winston Brown Invitational(IL), 2014-04-26(#4) |
| B-300H | 37 | 41.67 | Thornton, Bobby (2014) (Sacred Heart-Griffin, IL) | IL 2A Springfield Southeast Boys Sectional(IL), 2014-05-23(#6) |
| B-300H | 38 | 41.71 | Nickerson, Clayton (2016) (Triad, IL) | Winston Brown Invitational(IL), 2014-04-26(#6) |
| B-300H | 39 | 41.74 | Anghel, Bogdan (2015) (Antioch, IL) | IL 2A Grayslake Central Sectional(IL), 2014-05-23(#5) |
| B-300H | 40 | 41.75 | White, Robert (2014) (Perspectives Charter, IL) | IL 3A St. Rita Boys Sectional(IL), 2014-05-23(#3) |
| B-300H | 41 | 41.82 | Roll, Cody (2014) (Nazareth Academy, IL) | IL 2A Glenbard South Boys Sectional(IL), 2014-05-23(#1) |
| B-300H | 42 | 41.87 | Joryman, Atone (2014) (Dusable, IL) | IL 2A Boys State Prelims(IL), 2014-05-30(#21) |
| B-300H | 43 | 41.90 | Harris, Tracker (2017) (Dunlap, IL) | IL 2A Dunlap Boys Sectional(IL), 2014-05-22(#3) |
| B-300H | 44 | 41.92 | Vega, Israel (2014) (Elmwood Park, IL) | IL 2A Glenbard South Boys Sectional(IL), 2014-05-23(#2) |
| B-300H | 44 | 41.92 | Pennel, Dillion (2015) (Jacksonville, IL) | IL 2A Springfield Southeast Boys Sectional(IL), 2014-05-23(#7) |
| B-300H | 46 | 41.93 | Hecht, Colin (2016) (Effingham, IL) | IL 2A Centennial Boys Sectional(IL), 2014-05-23(#3) |
| B-300H | 47 | 41.98 | Jackson, Tommy (2014) (North Lawndale Charter, IL) | Gene Ward Invitational(IL), 2014-05-02(#5) |
| B-300H | 48 | 41.99 | Becker, Clayton (2015) (Monticello, IL) | IL 2A Centennial Boys Sectional(IL), 2014-05-23(#4) |
| B-300H | 48 | 41.99 | Ruffin, Brandon (2015) (Peoria, IL) | Urbana Boys Open(IL), 2014-04-19(#3) |
| B-300H | 50 | 42.00 | Layoff, Andy (2014) (Woodstock, IL) | IL 2A Grayslake Central Sectional(IL), 2014-05-23(#6) |
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