| Event | Rank | Mark | By | Meet |
| | | National Elites above. State Elites below | | |
| B-400 | 1 | 48.67 | Whalen, Jay (2015) (Glasgow, DE) | New Castle County Championships(DE), 2015-05-09(#1) |
| B-400 | 2 | 49.25 | Perez, Larry (2015) (Appoquinimink, DE) | New Castle County Championships(DE), 2015-05-09(#2) |
| B-400 | 3 | 49.41 | Dailey, Simeon (2016) (Glasgow, DE) | DE D1 State Meet(DE), 2015-05-16(#2) |
| B-400 | 4 | 49.80 | Floyd, Kamau (2016) (William Penn, DE) | New Castle County Championships(DE), 2015-05-09(#3) |
| B-400 | 5 | 49.87 | DeShields, Vaeshon (2015) (Lake Forest, DE) | DE D2 State Meet(DE), 2015-05-16(#1) |
| B-400 | 6 | 49.94 | Alexander, Pj (2017) (Sussex Central, DE) | DE D1 State Meet(DE), 2015-05-16(#4) |
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| | | See more performances for B-400 | | |
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