| Event | Rank | Mark | By | Meet |
| | | National Elites above. State Elites below | | |
| B-400 | 1 | 48.60 | Kinney, Paul (2015) (Karnes City, TX) | TX 3A State Meet(TX), 2015-05-16(#1) |
| B-400 | 2 | 49.28 | Porras, Noe (2016) (Kermit, TX) | TX 3A Region 1 Abilene(TX), 2015-05-02(#1) |
| B-400 | 3 | 49.38 | Sharp, D'Lance (2015) (Commerce, TX) | TX 3A Region 2 Whitehouse(TX), 2015-05-02(#1) |
| B-400 | 4 | 49.61 | Hunter, Garrett (2015) (Gunter, TX) | TX 3A Region 2 Whitehouse(TX), 2015-05-02(#2) |
| B-400 | 5 | 49.67 | Tomlinson, Jonathan (2015) (Stanton, TX) | TX 3A Region 1 Abilene(TX), 2015-05-02(#2) |
| B-400 | 6 | 49.69 | Anderson, Will (2018) (East Bernard, TX) | TX 3A Region 3 Baylor(TX), 2015-05-02(#1) |
| B-400 | 7 | 49.75 | Zamzow, Colby (2016) (Goliad, TX) | TX 3A Region 4 Converse(TX), 2015-05-02(#2) |
| B-400 | 8 | 49.78 | Hernandez, Abel (2016) (Early, TX) | TX 3A Region 1 Abilene(TX), 2015-05-02(#3) |
| B-400 | 9 | 49.80 | Duncan, Chase (2015) (Holliday, TX) | TX 3A Region 2 Whitehouse(TX), 2015-05-02(#3) |
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| | | See more performances for B-400 | | |
