| Event | Rank | Mark | By | Meet |
| B-400 | 1 | 45.96 | London, Wil (2015) (Waco, TX) (US#4) | TX Meet of Champions(TX), 2015-05-23(#1) |
| B-400 | 2 | 47.61 | Allison, Champion (2017) (George Ranch, TX) (US#56) | AAU JO Region 17 Qualifier(TX), 2015-07-04(#1) |
| B-400 | 3 | 47.80 | Sawyer, Jonathon (2015) (Manor, TX) (US#79) | TX 5A Region 3 Huntsville(TX), 2015-05-02(#2) |
| B-400 | 4 | 47.92 | Ehiemua, Shamon (2017) (Marshall, TX) (US#100) | Track Houston Championship(TX), 2015-05-30(#1) |
| B-400 | 5 | 48.11 | Murphy, Drake (2015) (Ball, TX) | TX 5A Region 3 Huntsville(TX), 2015-05-02(#3) |
| | | National Elites above. State Elites below | | |
| B-400 | 6 | 48.61 | Isom, John (2016) (Marshall, TX) | Rice Victor Lopez Classic(TX), 2015-04-04(#4) |
| B-400 | 7 | 48.77 | Banks, Michael (2015) (Ozen, TX) | Clear Springs Relays(TX), 2015-04-02(#1) |
| B-400 | 8 | 48.82 | Franklin, Jemiyah (2017) (Temple, TX) | TX 5A Area 17-18 College Station(TX), 2015-04-23(#3) |
| B-400 | 9 | 48.87 | Jordan, Carl (2016) (Humble, TX) | TX 5A Region 3 Huntsville(TX), 2015-05-02(#4) |
| B-400 | 10 | 49.04 | Moses, Terrel (2015) (Elkins, TX) | TX 5A District 23 Ft Bend(TX), 2015-04-18(#2) |
| B-400 | 11 | 49.14 | Deadmon, Bryce (2015) (Ridge Point, TX) | TX 5A District 23 Ft Bend(TX), 2015-04-18(#3) |
| B-400 | 12 | 49.41 | Carr, Fred (2016) (George Ranch, TX) | Rice All-Comers 5-28(TX), 2015-05-28(#2) |
| B-400 | 13 | 49.47 | Smith, Javian (2016) (Bush, TX) | Rice Victor Lopez Classic(TX), 2015-04-04(#6) |
| B-400 | 14 | 49.73 | Stewart, Tyrone (2017) (Waco, TX) | TX 5A District 17 Hutto(TX), 2015-04-15(#3) |
| B-400 | 15 | 49.83 | Welford, Kai (2016) (Ball, TX) | Clear Springs Relays(TX), 2015-04-02(#3) |
| B-400 | 16 | 49.84 | Burrhus, Jack (2015) (Foster, TX) | TX 5A Region 3 Huntsville(TX), 2015-05-02(#6) |
| B-400 | 16 | 49.84 | Gorman, Cory (2016) (George Ranch, TX) | TX 5A Region 3 Huntsville(TX), 2015-05-02(#7) |
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| | | See more performances for B-400 | | |
