| Event | Rank | Mark | By | Meet |
| | | National Elites above. State Elites below | | |
| B-400 | 1 | 48.39 | Eiker, Josh (2016) (Galesburg, IL) | United Township Kiwanis Invitational(IL), 2015-04-11(#1) |
| B-400 | 2 | 51.57 | Wilson, Doug (2016) (Rock Island, IL) | Dick Beebe Track Classic(IL), 2015-04-18(#5) |
| B-400 | 3 | 52.07 | Gay, Jalil (2018) (Rock Island, IL) | Western Big Six Boys Conference Meet(IL), 2015-05-15(#2) |
| B-400 | 4 | 52.22 | Gray, Chance (2015) (Quincy, IL) | IL 3A Normal West Boys Sectional(IL), 2015-05-22(#10) |
| B-400 | 5 | 52.35 | Harness, Alex (2016) (United Township, IL) | Western Big Six Boys Conference Meet(IL), 2015-05-15(#3) |
| B-400 | 6 | 52.42 | Mbaye, Makhtar (2016) (Moline, IL) | Tim Holt Invitational(IL), 2015-05-08(#1) |
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| | | See more performances for B-400 | | |
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