| Event | Rank | Mark | By | Meet |
| | | National Elites above. State Elites below | | |
| B-400 | 1 | 49.45 | Foster, Antwon (2016) (Prosser Career Academy, IL) | IL 3A Boys State Prelims(IL), 2015-05-29(#16) |
| B-400 | 2 | 49.95 | McNeal, Deandre (2016) (Orr Community Academy, IL) | IL 2A Boys State Finals(IL), 2015-05-30(#4) |
| B-400 | 3 | 50.38 | Hutsalyuk, Pavlo (2015) (Lane Technical, IL) | CPS Boys Varsity Trials(IL), 2015-05-06(#1) |
| B-400 | 4 | 50.54 | Thompson, Keontaye (2015) (Johnson College Prep, IL) | CPS Boys Varsity Trials(IL), 2015-05-06(#5) |
| B-400 | 5 | 50.56 | Ma, Kevin (2015) (Whitney Young, IL) | CPS Boys Varsity Trials(IL), 2015-05-06(#6) |
| B-400 | 6 | 51.16 | Williams, Charles (2015) (Johnson College Prep, IL) | CPS Boys Varsity Trials(IL), 2015-05-06(#3) |
| B-400 | 7 | 51.47 | Frejowski, Tom (2015) (Northside Prep, IL) | CPS Boys Varsity Trials(IL), 2015-05-06(#7) |
| B-400 | 8 | 51.48 | Mcneal, Deondre (2016) (Prosser Career Academy, IL) | Chicago Public League City Championships(IL), 2015-05-09(#4) |
| B-400 | 9 | 51.96 | Gibson, Chris (2015) (Lane Technical, IL) | Dan Horyn Invitational(IL), 2015-04-24(#1) |
| B-400 | 10 | 52.20 | Anglin, Demonte (2016) (Dusable, IL) | IL 2A Robeson Boys Sectional(IL), 2015-05-21(#2) |
| B-400 | 11 | 52.33 | Santoro, Arthur (2017) (Jones College Prep, IL) | Lane Tech Boys Quintangular(IL), 2015-04-16(#1) |
| B-400 | 12 | 52.35 | Ngo, Stephen (2015) (Whitney Young, IL) | CPS Boys Varsity Trials(IL), 2015-05-06(#9) |
| B-400 | 13 | 52.42 | Lumas, Skylar (Dunbar Vocational Academy, IL) | IL 3A Lyons Township Boys Sectional(IL), 2015-05-22(#6) |
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| | | See more performances for B-400 | | |
