| Event | Rank | Mark | By | Meet |
| | | National Elites above. State Elites below | | |
| B-300H | 1 | 38.53 | Vanderheyden, Reed (2018) (Geneseo, IL) | IL 2A Boys State Finals(IL), 2015-05-30(#5) |
| B-300H | 2 | 39.74 | Garcia, Edgar (2015) (Sycamore, IL) | IL 2A Sterling Boys Sectional(IL), 2015-05-22(#3) |
| B-300H | 3 | 40.00 | Johnson, Stephen (2015) (Yorkville, IL) | IL 3A Plainfield North Boys Sectional(IL), 2015-05-21(#4) |
| B-300H | 4 | 40.32 | Walters, Eric (2015) (LaSalle-Peru, IL) | Mendota Co-Ed Invitational(IL), 2015-05-01(#2) |
| B-300H | 5 | 40.41 | Robertson, Tanner (2016) (Kaneland , IL) | IL 2A Sterling Boys Sectional(IL), 2015-05-22(#5) |
| B-300H | 6 | 41.39 | Watkins, Tanner (2015) (Sycamore, IL) | Gib Seegers Invitational(IL), 2015-05-01(#3) |
| B-300H | 7 | 41.57 | Dresbach, Luke (2015) (LaSalle-Peru, IL) | John McCormick Invitational(IL), 2015-05-08(#2) |
| B-300H | 8 | 41.68 | Cosgrove, Ben (2017) (Geneseo, IL) | Galesburg Boys ABC Invitational(IL), 2015-04-17(#2) |
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| | | See more performances for B-300H | | |
