| Event | Rank | Mark | By | Meet |
| B-300H | 1 | 37.25 | Castillo, Vince (2015) (Donna, TX) (US#28) | TX 5A State Meet(TX), 2015-05-15(#3) |
| B-300H | 2 | 38.08 | Smith, Alexander (2015) (Cedar Park, TX) | TX 5A Region 4 San Antonio(TX), 2015-05-02(#2) |
| | | National Elites above. State Elites below | | |
| B-300H | 3 | 38.65 | Smith, Alex (2015) (Cedar Park, TX) | Leander Relays(TX), 2015-04-02(#1) |
| B-300H | 4 | 38.90 | Sanner, Morgan (2015) (Leander, TX) | TX 5A Region 4 San Antonio(TX), 2015-05-02(#3) |
| B-300H | 5 | 39.07 | Ley, Camren (2015) (Boerne Champion, TX) | TX 5A District 27 Tivy(TX), 2015-04-16(#1) |
| B-300H | 6 | 39.47 | Ruiz, Justin (2016) (Gregory-Portland, TX) | TX 5A Area 29-30 Alice(TX), 2015-04-25(#1) |
| B-300H | 7 | 39.95 | Wilson Chestney, Robert (2017) (Vandegrift, TX) | TX 5A Region 4 San Antonio(TX), 2015-05-02(#6) |
| B-300H | 8 | 40.24 | Hernandez, Chris (2016) (Highlands, TX) | TX 5A Region 4 San Antonio(TX), 2015-05-02(#7) |
| B-300H | 9 | 40.46 | Martinez, Johnathan (2015) (Alice, TX) | TX 5A Region 4 San Antonio(TX), 2015-05-02(#8) |
| B-300H | 10 | 40.50 | Garcia, Martin (2015) (Veterans Memorial, TX) | TX 6A District 30 La Joya(TX), 2015-04-11(#3) |
| B-300H | 11 | 40.57 | Rodriguez, John (2015) (Calallen, TX) | TX 5A District 30 Corpus Christi(TX), 2015-04-16(#2) |
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| | | See more performances for B-300H | | |
