| Event | Rank | Mark | By | Meet |
| B-400 | 1 | 46.22 | Igbokwe, Obi (2015) (The Woodlands, TX) (US#7) | TX 6A Region 2 Baylor(TX), 2015-05-02(#1) |
| B-400 | 2 | 46.68 | Ogwo, Emmanuel (2015) (Horn, TX) (US#15) | TX 6A State Meet(TX), 2015-05-16(#4) |
| B-400 | 3 | 46.93 | Marshall, Myles (2015) (Kingwood, TX) (US#24) | TX 6A State Meet(TX), 2015-05-16(#5) |
| B-400 | 4 | 47.40 | Andrews, Jostyn (2016) (Skyline, TX) (US#45) | TX 6A Area 9-10 Mesquite(TX), 2015-04-25(#2) |
| B-400 | 5 | 47.49 | Warren, Lincoln (2015) (Horn, TX) (US#48) | TX 6A Area 9-10 Mesquite(TX), 2015-04-25(#3) |
| B-400 | 6 | 47.73 | Brown, Terry (2015) (Round Rock, TX) (US#70) | TX 6A Region 2 Baylor(TX), 2015-05-02(#6) |
| B-400 | 7 | 47.76 | Harper, Jacob (2016) (Klein Oak, TX) (US#74) | TX 6A District 15 Klein(TX), 2015-04-09(#1) |
| B-400 | 8 | 47.93 | Harris, Kaylan (2015) (Oak Ridge, TX) | AAU JO Region 17 Qualifier(TX), 2015-07-04(#2) |
| B-400 | 9 | 47.97 | Preston, Jamarice (2015) (Lake Highlands, TX) | TX 6A District 10 Mesquite(TX), 2015-04-15(#2) |
| B-400 | 10 | 48.00 | Mitchell, D'Undre (2015) (Harker Heights, TX) | Track Houston Championship(TX), 2015-05-30(#2) |
| B-400 | 11 | 48.06 | Jefferson, Desmond (2015) (Shoemaker, TX) | USATF Junior Olympics National Championships 17-18(FL), 2015-08-02(#3) |
| B-400 | 12 | 48.08 | Wallace, Jevon (2017) (Harker Heights, TX) | AAU JO Region 19 Qualifier(TX), 2015-07-01(#1) |
| B-400 | 13 | 48.19 | Pouncey, Eric (2015) (Westfield, TX) | TX 6A Region 2 Baylor(TX), 2015-05-02(#7) |
| B-400 | 14 | 48.20 | Green, Phillip (2015) (Richardson, TX) | TX 6A Area 9-10 Mesquite(TX), 2015-04-25(#5) |
| | | National Elites above. State Elites below | | |
| B-400 | 15 | 48.75 | Woods, Ethan (2016) (North Garland, TX) | TX 6A Area 11-12 Garland(TX), 2015-04-24(#2) |
| B-400 | 16 | 48.88 | Trudell, Dawson (2017) (Kingwood, TX) | TX 6A District 16 Humble(TX), 2015-04-16(#3) |
| B-400 | 17 | 48.93 | Jones, Chase (2015) (Klein, TX) | TX 6A Area 15-16 Humble(TX), 2015-04-23(#4) |
| B-400 | 18 | 49.21 | Lang, Dominique (2016) (Summer Creek, TX) | TX 6A District 16 Humble(TX), 2015-04-16(#4) |
| B-400 | 19 | 49.25 | Ridley, Rickey (2015) (Spring, TX) | TX 6A District 15 Klein(TX), 2015-04-09(#3) |
| B-400 | 20 | 49.39 | Woods, Malcolm (2015) (Sachse, TX) | TX 6A Area 11-12 Garland(TX), 2015-04-24(#3) |
| B-400 | 21 | 49.50 | White, Ja'Darious (2018) (Klein Oak, TX) | AAU JO Region 17 Qualifier(TX), 2015-07-04(#2) |
| B-400 | 22 | 49.51 | Durden, Derrick (2015) (Klein Oak, TX) | TX 6A District 15 Klein(TX), 2015-04-09(#5) |
| B-400 | 23 | 49.56 | Stuard, Grant (2017) (Oak Ridge, TX) | TX 6A Area 15-16 Humble(TX), 2015-04-23(#6) |
| B-400 | 23 | 49.56 | Dorrough, Luke (2016) (Oak Ridge, TX) | AAU JO Region 17 Qualifier(TX), 2015-07-04(#3) |
| B-400 | 25 | 49.73 | Sekyere, Yaw (2015) (Naaman Forest, TX) | TX 6A Area 11-12 Garland(TX), 2015-04-24(#4) |
| B-400 | 25 | 49.73 | Nelson, Kyle (2015) (Atascocita, TX) | Texas Southern Relays(TX), 2015-03-21(#6) |
| B-400 | 27 | 49.75 | Holston, Chauncee (2016) (Round Rock, TX) | TX 6A Area 13-14 Marble Falls(TX), 2015-04-23(#2) |
| B-400 | 28 | 49.81 | Winningham, Dwuane (2015) (Atascocita, TX) | TX 6A District 16 Humble(TX), 2015-04-16(#5) |
| B-400 | 29 | 49.85 | Holman, Joshua (2016) (College Park, TX) | Rice All-Comers 5-28(TX), 2015-05-28(#4) |
| B-400 | 30 | 49.88 | Blackford, Mason (2015) (The Woodlands, TX) | Rice Victor Lopez Classic(TX), 2015-04-04(#7) |
| B-400 | 31 | 49.92 | Somerville, Keshawn (2016) (Hendrickson, TX) | Kileen ISD Relays(TX), 2015-03-13(#2) |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | See more performances for B-400 | | |
