| Event | Rank | Mark | By | Meet |
| | | National Elites above. State Elites below | | |
| B-400 | 1 | 52.10 | Blievernicht, Kyle (2014) (Teutopolis, IL) | Illinois Top Times Championships - Class 1A(IL), 2013-03-22(#1) |
| B-400 | 1 | 52.10 | Harrell, Johnathan (2014) (Aurora Christian, IL) | Illinois Top Times Championships - Class 1A(IL), 2013-03-22(#2) |
| B-400 | 3 | 52.62 | Fox, Tristan (2014) (Lena-Winslow, IL) | Tri State Small School Invitational(WI), 2013-03-16(#1) |
| B-400 | 4 | 52.67 | Hennig, Joshua (2014) (Springfield Lutheran, IL) | Illinois Top Times Championships - Class 1A(IL), 2013-03-22(#3) |
| B-400 | 5 | 52.73 | Flynn, Morgan (2014) (Williamsville, IL) | Illinois Top Times Championships - Class 1A(IL), 2013-03-22(#4) |
| B-400 | 6 | 53.14 | Ross, Logan (2015) (North Greene, IL) | Jacksonville Small School Invitational(IL), 2013-03-02(#1) |
| B-400 | 7 | 53.18 | Meunier, Nicholas (2016) (Gibson City-Melvin-Sibley, IL) | Illinois Top Times Championships - Class 1A(IL), 2013-03-22(#5) |
| B-400 | 8 | 53.21 | Sellers, Tevin (2013) (Lena-Winslow, IL) | Tri State Small School Invitational(WI), 2013-03-16(#3) |
| B-400 | 9 | 53.54 | Pokalsey, Jason (2014) (Central A & M, IL) | Illinois Top Times Championships - Class 1A(IL), 2013-03-22(#6) |
| B-400 | 10 | 53.67 | Pryor, Corey (2013) (Leo Catholic, IL) | Illini Scholastic Open(IL), 2013-02-16(#5) |
| B-400 | 11 | 53.74 | Wilner, Sam (2014) (Judah Christian, IL) | Jacksonville Small School Invitational(IL), 2013-03-02(#2) |
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| | | See more performances for B-400 | | |
