| Event | Rank | Mark | By | Meet |
| B-400 | 1 | 46.42 | Age, Eric (2015) (Lancaster, TX) (US#11) | TX 5A District 14 Lancaster(TX), 2015-04-16(#1) |
| | | National Elites above. State Elites below | | |
| B-400 | 2 | 48.42 | Pfiester, Riley (2015) (Creekview, TX) | TX 5A Region 2 Arlington(TX), 2015-05-02(#3) |
| B-400 | 2 | 48.42 | Palmer, Isaiah (2017) (Liberty, TX) | TX 5A Region 2 Arlington(TX), 2015-05-02(#2) |
| B-400 | 4 | 48.52 | Hawkins, Eric (2017) (Pine Tree, TX) | TX 5A Region 2 Arlington(TX), 2015-05-02(#3) |
| B-400 | 5 | 48.56 | Fuller, Aaron (2016) (Lovejoy, TX) | TX 5A Region 2 Arlington(TX), 2015-05-02(#4) |
| B-400 | 6 | 48.79 | Deboskie, Julien (2015) (McKinney North, TX) | TX 5A District 10 Wylie(TX), 2015-04-09(#2) |
| B-400 | 7 | 48.92 | Hollis, Jordan (2017) (Red Oak, TX) | USATF JO Southwest Assn(TX), 2015-06-20(#8) |
| B-400 | 8 | 49.05 | Davis, Lamarque (Tre) (2017) (Timberview, TX) | TX 5A Region 2 Arlington(TX), 2015-05-02(#6) |
| B-400 | 9 | 49.07 | Shepard, Isaac (2015) (Seguin, TX) | TX 5A Area 13-14 Lancaster(TX), 2015-04-23(#2) |
| B-400 | 10 | 49.08 | Davis, Lamarque (2017) (Timberview, TX) | TX 5A Area 13-14 Lancaster(TX), 2015-04-23(#3) |
| B-400 | 11 | 49.36 | Julian, Conner (2015) (Creekview, TX) | TX 5A Region 2 Arlington(TX), 2015-05-02(#8) |
| B-400 | 12 | 49.45 | Mullings, Terrance (2017) (Hillcrest, TX) | AAU JO Region 18 Qualifier(TX), 2015-07-05(#3) |
| B-400 | 13 | 49.57 | Coffey, Noah (2015) (Lovejoy, TX) | TX 5A District 10 Wylie(TX), 2015-04-09(#3) |
| B-400 | 13 | 49.57 | Awosere, Sam (2016) (Heritage, TX) | TAAF Games of Texas(TX), 2015-08-02(#7) |
| B-400 | 15 | 49.59 | Anderson, Barrett (2016) (Royse City, TX) | TAAF Games Region 7 Mesquite(TX), 2015-07-18(#2) |
| B-400 | 16 | 49.74 | Redden, TK (2015) (Pine Tree, TX) | Hallsville Relays(TX), 2015-03-19(#1) |
| B-400 | 17 | 49.96 | Engbrock, Ian (2016) (Lovejoy, TX) | TX 5A District 10 Wylie(TX), 2015-04-09(#4) |
| B-400 | 18 | 49.98 | Walker, Christopher (2015) (Mansfield Summit, TX) | TX 5A District 14 Lancaster(TX), 2015-04-16(#3) |
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| | | See more performances for B-400 | | |
