| Event | Rank | Mark | By | Meet |
| B-400 | 1 | 45.75 | Reed, Keshun (2016) (Martin, TX) (US#3) | TX 6A State Meet(TX), 2015-05-16(#1) |
| B-400 | 2 | 45.96 | London, Wil (2015) (Waco, TX) (US#4) | TX Meet of Champions(TX), 2015-05-23(#1) |
| B-400 | 3 | 46.22 | Igbokwe, Obi (2015) (The Woodlands, TX) (US#7) | TX 6A Region 2 Baylor(TX), 2015-05-02(#1) |
| B-400 | 4 | 46.42 | Age, Eric (2015) (Lancaster, TX) (US#11) | TX 5A District 14 Lancaster(TX), 2015-04-16(#1) |
| B-400 | 5 | 46.66 | Schwartz, Rhayko (2015) (Boyd, TX) (US#14) | TX 6A State Meet(TX), 2015-05-16(#3) |
| B-400 | 6 | 46.68 | Ogwo, Emmanuel (2015) (Horn, TX) (US#15) | TX 6A State Meet(TX), 2015-05-16(#4) |
| B-400 | 7 | 46.93 | Marshall, Myles (2015) (Kingwood, TX) (US#24) | TX 6A State Meet(TX), 2015-05-16(#5) |
| B-400 | 8 | 47.00 | Fields, Howard (2017) (Manvel, TX) (US#27) | AAU Junior Olympics National Championships 15-16(VA), 2015-08-08(#2) |
| B-400 | 9 | 47.17 | Champlin, Ryan (2016) (Grace Prep, TX) (US#34) | USATF Junior Olympics National Championships 17-18(FL), 2015-08-02(#1) |
| B-400 | 10 | 47.40 | Andrews, Jostyn (2016) (Skyline, TX) (US#45) | TX 6A Area 9-10 Mesquite(TX), 2015-04-25(#2) |
| B-400 | 11 | 47.49 | Warren, Lincoln (2015) (Horn, TX) (US#48) | TX 6A Area 9-10 Mesquite(TX), 2015-04-25(#3) |
| B-400 | 12 | 47.57 | McStravick, Christian (2016) (Strake Jesuit, TX) (US#54) | TX 6A Region 3 Houston(TX), 2015-05-02(#2) |
| B-400 | 13 | 47.61 | Allison, Champion (2017) (George Ranch, TX) (US#56) | AAU JO Region 17 Qualifier(TX), 2015-07-04(#1) |
| B-400 | 14 | 47.62 | Wallace, Brenden (2015) (Allen, TX) (US#58) | USATF JO Southwest Assn(TX), 2015-06-20(#2) |
| B-400 | 15 | 47.73 | Brown, Terry (2015) (Round Rock, TX) (US#70) | TX 6A Region 2 Baylor(TX), 2015-05-02(#6) |
| B-400 | 16 | 47.76 | Harper, Jacob (2016) (Klein Oak, TX) (US#74) | TX 6A District 15 Klein(TX), 2015-04-09(#1) |
| B-400 | 16 | 47.76 | Cargile, Quentin (2015) (Timber Creek, TX) (US#74) | TX 6A Region 1 Arlington(TX), 2015-05-02(#3) |
| B-400 | 18 | 47.80 | Sawyer, Jonathon (2015) (Manor, TX) (US#79) | TX 5A Region 3 Huntsville(TX), 2015-05-02(#2) |
| B-400 | 18 | 47.80 | Birk, Jamarkus (2017) (North Crowley, TX) (US#79) | TAAF Games of Texas(TX), 2015-08-02(#3) |
| B-400 | 20 | 47.92 | Liburd, James (2015) (Madison, TX) (US#100) | TX 6A State Meet(TX), 2015-05-16(#7) |
| B-400 | 20 | 47.92 | Ehiemua, Shamon (2017) (Marshall, TX) (US#100) | Track Houston Championship(TX), 2015-05-30(#1) |
| B-400 | 22 | 47.93 | Harris, Kaylan (2015) (Oak Ridge, TX) | AAU JO Region 17 Qualifier(TX), 2015-07-04(#2) |
| B-400 | 22 | 47.93 | Grimes, Norman (2016) (Canyon, TX) | Great Southwest Classic(NM), 2015-06-06(#9) |
| B-400 | 24 | 47.97 | Preston, Jamarice (2015) (Lake Highlands, TX) | TX 6A District 10 Mesquite(TX), 2015-04-15(#2) |
| B-400 | 25 | 48.00 | Mitchell, D'Undre (2015) (Harker Heights, TX) | Track Houston Championship(TX), 2015-05-30(#2) |
| B-400 | 26 | 48.03 | Gonzalez, Brian (2016) (Bel Air, TX) | Willie Williams Classic(AZ), 2015-03-21(#1) |
| B-400 | 27 | 48.05 | Matute, Yariel (2015) (Juarez-Lincoln, TX) | TX 6A State Meet(TX), 2015-05-16(#8) |
| B-400 | 28 | 48.06 | Jefferson, Desmond (2015) (Shoemaker, TX) | USATF Junior Olympics National Championships 17-18(FL), 2015-08-02(#3) |
| B-400 | 29 | 48.07 | Patterson, Isaiah (2015) (Moody, TX) | TX 5A Region 4 San Antonio(TX), 2015-05-02(#1) |
| B-400 | 30 | 48.08 | Wallace, Jevon (2017) (Harker Heights, TX) | AAU JO Region 19 Qualifier(TX), 2015-07-01(#1) |
| B-400 | 31 | 48.11 | Murphy, Drake (2015) (Ball, TX) | TX 5A Region 3 Huntsville(TX), 2015-05-02(#3) |
| B-400 | 32 | 48.16 | Nowak, Jake (2015) (Vandegrift, TX) | TX 5A Region 4 San Antonio(TX), 2015-05-02(#2) |
| B-400 | 33 | 48.19 | Pouncey, Eric (2015) (Westfield, TX) | TX 6A Region 2 Baylor(TX), 2015-05-02(#7) |
| B-400 | 34 | 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 | 35 | 48.27 | Clark, O'Shae (2017) (Cypress Springs, TX) | TX 6A District 17 Cypress(TX), 2015-04-15(#1) |
| B-400 | 36 | 48.33 | Pittman, Isaiah (2015) (Taylor, TX) | TX 4A Area 25-26 Canyon Lake(TX), 2015-04-23(#1) |
| B-400 | 37 | 48.36 | Hooper, Sean (2017) (Fossil Ridge, TX) | USATF JO Southwest Assn(TX), 2015-06-20(#2) |
| B-400 | 38 | 48.42 | Sheriff, Va-Sheku (2015) (Caprock, TX) | TX 5A District 3 Dumas(TX), 2015-04-17(#1) |
| B-400 | 38 | 48.42 | Palmer, Isaiah (2017) (Liberty, TX) | TX 5A Region 2 Arlington(TX), 2015-05-02(#2) |
| B-400 | 38 | 48.42 | Pfiester, Riley (2015) (Creekview, TX) | TX 5A Region 2 Arlington(TX), 2015-05-02(#3) |
| B-400 | 41 | 48.43 | Jones, Cameron (2018) (Euless Trinity, TX) | TX 6A Region 1 Arlington(TX), 2015-05-02(#4) |
| B-400 | 42 | 48.49 | Pennamon, D'Vaughn (2016) (Manvel, TX) | Rice Victor Lopez Classic(TX), 2015-04-04(#3) |
| B-400 | 43 | 48.50 | Green, Floyd (2015) (Wheatley, TX) | TX 4A Region 3 Huntsville(TX), 2015-05-02(#1) |
| B-400 | 44 | 48.52 | Hawkins, Eric (2017) (Pine Tree, TX) | TX 5A Region 2 Arlington(TX), 2015-05-02(#3) |
| B-400 | 45 | 48.56 | Fuller, Aaron (2016) (Lovejoy, TX) | TX 5A Region 2 Arlington(TX), 2015-05-02(#4) |
| B-400 | 46 | 48.60 | Kinney, Paul (2015) (Karnes City, TX) | TX 3A State Meet(TX), 2015-05-16(#1) |
| B-400 | 47 | 48.61 | Isom, John (2016) (Marshall, TX) | Rice Victor Lopez Classic(TX), 2015-04-04(#4) |
| B-400 | 48 | 48.67 | Davis, Payton (2017) (Hudson, TX) | TX 4A State Meet(TX), 2015-05-16(#1) |
| B-400 | 49 | 48.73 | Izu, Ilolo (2015) (Strake Jesuit, TX) | Rice All-Comers 6-19(TX), 2015-06-19(#1) |
| B-400 | 50 | 48.75 | Woods, Ethan (2016) (North Garland, TX) | TX 6A Area 11-12 Garland(TX), 2015-04-24(#2) |
| B-400 | 51 | 48.76 | John, Anthony (2016) (Taylor, TX) | TX 6A Area 23-24 Ft Bend(TX), 2015-04-24(#1) |
| B-400 | 52 | 48.77 | Banks, Michael (2015) (Ozen, TX) | Clear Springs Relays(TX), 2015-04-02(#1) |
| B-400 | 53 | 48.78 | Davis, David (2016) (Duncanville, TX) | TAAF Games of Texas(TX), 2015-08-02(#4) |
| B-400 | 54 | 48.79 | Deboskie, Julien (2015) (McKinney North, TX) | TX 5A District 10 Wylie(TX), 2015-04-09(#2) |
| B-400 | 55 | 48.82 | Franklin, Jemiyah (2017) (Temple, TX) | TX 5A Area 17-18 College Station(TX), 2015-04-23(#3) |
| B-400 | 55 | 48.82 | Marquez, Isaac (2015) (Boswell, TX) | TX 5A Region 1 Lubbock(TX), 2015-05-02(#2) |
| B-400 | 55 | 48.82 | Brownlow, Blaze (2016) (Fort Worth Christian, TX) | TX TAPPS 4A State Meet(TX), 2015-05-09(#1) |
| B-400 | 58 | 48.85 | Johnson, Jadon (2017) (Lewisville, TX) | AAU JO Region 18 Qualifier(TX), 2015-07-05(#1) |
| B-400 | 59 | 48.87 | Jordan, Carl (2016) (Humble, TX) | TX 5A Region 3 Huntsville(TX), 2015-05-02(#4) |
| B-400 | 59 | 48.87 | Thomas, Ketonie (2015) (Pearland, TX) | TX 6A Area 21-22 North Shore(TX), 2015-04-23(#2) |
| B-400 | 61 | 48.88 | Trudell, Dawson (2017) (Kingwood, TX) | TX 6A District 16 Humble(TX), 2015-04-16(#3) |
| B-400 | 61 | 48.88 | Francois, Ja'Quan (Unattached, TX) | USATF JO Region 12 Qualifier(TX), 2015-07-11(#1) |
| B-400 | 63 | 48.90 | Ekweani, Chucky (2015) (Plano, TX) | USATF JO Southwest Assn(TX), 2015-06-20(#7) |
| B-400 | 64 | 48.92 | Ford, Roderick (2017) (Ft Worth Southwest, TX) | TX 5A Region 1 Lubbock(TX), 2015-05-02(#3) |
| B-400 | 64 | 48.92 | Hollis, Jordan (2017) (Red Oak, TX) | USATF JO Southwest Assn(TX), 2015-06-20(#8) |
| B-400 | 66 | 48.93 | Washington, Givon (2016) (Liberty Christian, TX) | TX TAPPS 5A State Meet(TX), 2015-05-09(#1) |
| B-400 | 66 | 48.93 | Jones, Chase (2015) (Klein, TX) | TX 6A Area 15-16 Humble(TX), 2015-04-23(#4) |
| B-400 | 68 | 48.99 | Akai, Michael (2015) (Judson, TX) | TX 6A District 25 Judson(TX), 2015-04-17(#1) |
| B-400 | 69 | 49.00 | Henderson, Tien (2017) (Cy-Fair, TX) | TX 6A District 17 Cypress(TX), 2015-04-15(#2) |
| B-400 | 70 | 49.02 | Crocker, Austin (2017) (Reagan, TX) | AAU JO Region 19 Qualifier(TX), 2015-07-01(#1) |
| B-400 | 71 | 49.03 | Bolden, Bronshaye (2015) (Bowie, TX) | Greater SW Showcase(TX), 2015-05-16(#1) |
| B-400 | 72 | 49.04 | Moses, Terrel (2015) (Elkins, TX) | TX 5A District 23 Ft Bend(TX), 2015-04-18(#2) |
| B-400 | 73 | 49.05 | Davis, Lamarque (Tre) (2017) (Timberview, TX) | TX 5A Region 2 Arlington(TX), 2015-05-02(#6) |
| B-400 | 74 | 49.06 | Contreras, Ricardo (2016) (Bastrop, TX) | TX 5A District 26 Cedar Creek(TX), 2015-04-09(#1) |
| B-400 | 75 | 49.07 | Shepard, Isaac (2015) (Seguin, TX) | TX 5A Area 13-14 Lancaster(TX), 2015-04-23(#2) |
| B-400 | 76 | 49.08 | Davis, Lamarque (2017) (Timberview, TX) | TX 5A Area 13-14 Lancaster(TX), 2015-04-23(#3) |
| B-400 | 77 | 49.10 | Nash, Dartavious (2015) (Lamar, TX) | USATF JO Region 12 Qualifier(TX), 2015-07-11(#5) |
| B-400 | 77 | 49.10 | Warren, Austin (2016) (Lewisville, TX) | TAAF Games of Texas(TX), 2015-08-02(#5) |
| B-400 | 79 | 49.14 | Deadmon, Bryce (2015) (Ridge Point, TX) | TX 5A District 23 Ft Bend(TX), 2015-04-18(#3) |
| B-400 | 80 | 49.15 | Voss, Alec (2017) (Houston Memorial, TX) | TX 6A Area 17-18 Cypress(TX), 2015-04-23(#2) |
| B-400 | 81 | 49.17 | West, Tyrin (2016) (Fairfield, TX) | TX 4A Region 3 Huntsville(TX), 2015-05-02(#3) |
| B-400 | 82 | 49.18 | Booker, Jordan (2016) (Bellaire Episcopal, TX) | St John Finnegan Invitational(TX), 2015-04-18(#1) |
| B-400 | 83 | 49.21 | Lang, Dominique (2016) (Summer Creek, TX) | TX 6A District 16 Humble(TX), 2015-04-16(#4) |
| B-400 | 84 | 49.22 | Atkinson, Josh (2015) (Cedar Hill, TX) | TX 6A Area 7-8 Cedar Hill(TX), 2015-04-22(#2) |
| B-400 | 85 | 49.24 | Lynch, DaSean (2017) (Cypress Creek, TX) | TX 6A District 17 Cypress(TX), 2015-04-15(#3) |
| B-400 | 86 | 49.25 | Ridley, Rickey (2015) (Spring, TX) | TX 6A District 15 Klein(TX), 2015-04-09(#3) |
| B-400 | 87 | 49.26 | Olguin, Reagan (2015) (Vela, TX) | TX 5A District 31 Rio Grande City(TX), 2015-04-17(#1) |
| B-400 | 88 | 49.28 | Porras, Noe (2016) (Kermit, TX) | TX 3A Region 1 Abilene(TX), 2015-05-02(#1) |
| B-400 | 89 | 49.30 | Robinson, Malik (2016) (Eisenhower, TX) | TX 6A Area 17-18 Cypress(TX), 2015-04-23(#3) |
| B-400 | 89 | 49.30 | Maas, Jon (2017) (Clark, TX) | USATF JO Region 12 Qualifier(TX), 2015-07-11(#7) |
| B-400 | 91 | 49.31 | McNeal, Tristen (2016) (Smithson Valley, TX) | TX 6A Area 25-26 San Antonio(TX), 2015-04-24(#3) |
| B-400 | 91 | 49.31 | Smith, Elijah (2017) (Anna, TX) | TX 4A Region 2 Commerce(TX), 2015-05-02(#1) |
| B-400 | 91 | 49.31 | Mond, Kellen (2017) (Reagan, TX) | TX 6A Area 25-26 San Antonio(TX), 2015-04-24(#4) |
| B-400 | 91 | 49.31 | Gonzales, Ian (2017) (Big Spring, TX) | TX 4A State Meet(TX), 2015-05-16(#4) |
| B-400 | 95 | 49.35 | Valentine, Tyrell (2017) (Hightower, TX) | TX 6A District 23 Alief(TX), 2015-04-17(#2) |
| B-400 | 96 | 49.36 | Julian, Conner (2015) (Creekview, TX) | TX 5A Region 2 Arlington(TX), 2015-05-02(#8) |
| B-400 | 97 | 49.38 | Neff, Ty (2015) (Bandera, TX) | TX 4A Area 29-30 Poteet(TX), 2015-04-23(#1) |
| B-400 | 97 | 49.38 | Sharp, D'Lance (2015) (Commerce, TX) | TX 3A Region 2 Whitehouse(TX), 2015-05-02(#1) |
| B-400 | 99 | 49.39 | Landez, Sean (2015) (Sharyland, TX) | TX 5A District 31 Rio Grande City(TX), 2015-04-17(#2) |
| B-400 | 99 | 49.39 | Woods, Malcolm (2015) (Sachse, TX) | TX 6A Area 11-12 Garland(TX), 2015-04-24(#3) |
| B-400 | 101 | 49.40 | Ellison, Joseph (2015) (Keller Central, TX) | TX 6A Area 5-6 Justin(TX), 2015-04-24(#4) |
| B-400 | 102 | 49.41 | Rhodes, James (2015) (Dawson, TX) | Walter Heintschel Relays(TX), 2015-02-28(#1) |
| B-400 | 102 | 49.41 | Carr, Fred (2016) (George Ranch, TX) | Rice All-Comers 5-28(TX), 2015-05-28(#2) |
| B-400 | 104 | 49.42 | Ford, Micheal (2018) (Port Arthur Memorial, TX) | Texas Southern Relays(TX), 2015-03-21(#3) |
| B-400 | 105 | 49.45 | Rubio, Javier (2015) (Caprock, TX) | TX 5A Region 1 Lubbock(TX), 2015-05-02(#2) |
| B-400 | 105 | 49.45 | Mullings, Terrance (2017) (Hillcrest, TX) | AAU JO Region 18 Qualifier(TX), 2015-07-05(#3) |
| B-400 | 107 | 49.47 | Smith, Javian (2016) (Bush, TX) | Rice Victor Lopez Classic(TX), 2015-04-04(#6) |
| B-400 | 108 | 49.48 | Angulo, JC (2017) (Katy, TX) | TX 6A Area 19-20 Houston(TX), 2015-04-23(#2) |
| B-400 | 109 | 49.50 | White, Ja'Darious (2018) (Klein Oak, TX) | AAU JO Region 17 Qualifier(TX), 2015-07-04(#2) |
| B-400 | 110 | 49.51 | Durden, Derrick (2015) (Klein Oak, TX) | TX 6A District 15 Klein(TX), 2015-04-09(#5) |
| B-400 | 110 | 49.51 | Lewis, Robert (2016) (North Shore, TX) | TX 6A Area 21-22 North Shore(TX), 2015-04-23(#3) |
| B-400 | 110 | 49.51 | Neely, Cameron (2017) (DeSoto, TX) | USATF JO Southwest Assn(TX), 2015-06-20(#1) |
| B-400 | 110 | 49.51 | Bender, Glenn (2018) (Allen, TX) | USATF JO Region 12 Qualifier(TX), 2015-07-11(#2) |
| B-400 | 110 | 49.51 | Gray, Malik (2015) (Duncanville, TX) | Rockwall Jacket Classic(TX), 2015-02-14(#1) |
| B-400 | 115 | 49.52 | Plunk, Alex (2016) (Tascosa, TX) | TX 6A District 2 Lubbock(TX), 2015-04-17(#1) |
| B-400 | 116 | 49.56 | Stuard, Grant (2017) (Oak Ridge, TX) | TX 6A Area 15-16 Humble(TX), 2015-04-23(#6) |
| B-400 | 116 | 49.56 | Dorrough, Luke (2016) (Oak Ridge, TX) | AAU JO Region 17 Qualifier(TX), 2015-07-04(#3) |
| B-400 | 118 | 49.57 | Coffey, Noah (2015) (Lovejoy, TX) | TX 5A District 10 Wylie(TX), 2015-04-09(#3) |
| B-400 | 118 | 49.57 | Awosere, Sam (2016) (Heritage, TX) | TAAF Games of Texas(TX), 2015-08-02(#7) |
| B-400 | 120 | 49.59 | Anderson, Barrett (2016) (Royse City, TX) | TAAF Games Region 7 Mesquite(TX), 2015-07-18(#2) |
| B-400 | 120 | 49.59 | O'Brien, Pryce (2016) (Kennedale, TX) | TX 4A Region 1 Lubbock(TX), 2015-05-02(#1) |
| B-400 | 122 | 49.60 | Brown, Anterius (2016) (Duncanville, TX) | AAU JO Region 18 Qualifier(TX), 2015-07-05(#4) |
| B-400 | 123 | 49.61 | Bergeron, J.P. (2015) (Clear Lake, TX) | TX 6A District 24 Clear Springs(TX), 2015-04-16(#1) |
| B-400 | 123 | 49.61 | Lopez, Ryan (2015) (Big Spring, TX) | TX 4A District 2 Levelland(TX), 2015-04-16(#2) |
| B-400 | 123 | 49.61 | Dicken, Zach (2017) (Coppell, TX) | TX 6A Area 7-8 Cedar Hill(TX), 2015-04-22(#3) |
| B-400 | 123 | 49.61 | Hunter, Garrett (2015) (Gunter, TX) | TX 3A Region 2 Whitehouse(TX), 2015-05-02(#2) |
| B-400 | 127 | 49.62 | Hansen, Richard (2017) (Houston Christian, TX) | SPC Championships(TX), 2015-05-01(#2) |
| B-400 | 128 | 49.63 | Wickliff, Naj (2015) (Cypress Creek, TX) | TX 6A District 17 Cypress(TX), 2015-04-15(#2) |
| B-400 | 128 | 49.63 | Gordon, Angelo (2016) (Judson, TX) | AAU JO Region 19 Qualifier(TX), 2015-07-01(#3) |
| B-400 | 128 | 49.63 | Lopez, Thomas (2017) (El Dorado, TX) | USATF JO Border Assn(TX), 2015-06-27(#2) |
| B-400 | 131 | 49.65 | Martin, Joshua (2016) (Manvel, TX) | Rice All-Comers 5-28(TX), 2015-05-28(#3) |
| B-400 | 132 | 49.67 | Lemon, Brendon (2017) (Cypress Lakes, TX) | TX 6A District 17 Cypress(TX), 2015-04-15(#4) |
| B-400 | 132 | 49.67 | Tomlinson, Jonathan (2015) (Stanton, TX) | TX 3A Region 1 Abilene(TX), 2015-05-02(#2) |
| B-400 | 132 | 49.67 | Haywood, Justin (2016) (Cedar Hill, TX) | Luke's Dallas All-Comers 6-30(TX), 2015-06-30(#1) |
| B-400 | 135 | 49.68 | Abalos, Alex (2015) (Coppell, TX) | TX 6A Area 7-8 Cedar Hill(TX), 2015-04-22(#4) |
| B-400 | 135 | 49.68 | Martin, Zach (2018) (Travis, TX) | AAU JO Region 17 Qualifier(TX), 2015-07-04(#3) |
| B-400 | 137 | 49.69 | Mitchell, Timothy (2015) (Eastside, TX) | TX 5A District 26 Cedar Creek(TX), 2015-04-09(#2) |
| B-400 | 137 | 49.69 | Anderson, Will (2018) (East Bernard, TX) | TX 3A Region 3 Baylor(TX), 2015-05-02(#1) |
| B-400 | 137 | 49.69 | Hernadez, Cesar (2016) (Incarnate Word, TX) | TX TAPPS 4A State Meet(TX), 2015-05-09(#2) |
| B-400 | 137 | 49.69 | Laverty, Cameron (2015) (El Paso Americas, TX) | El Paso Burges Invitational(TX), 2015-03-07(#1) |
| B-400 | 141 | 49.70 | Cueto, Jaime (2017) (Plains, TX) | TX 2A Region 1 Odessa(TX), 2015-05-02(#1) |
| B-400 | 142 | 49.71 | Johnson, Adrian (2015) (El Dorado, TX) | TX 6A District 1 El Paso(TX), 2015-04-17(#1) |
| B-400 | 143 | 49.72 | Atkinson, Jordan (2016) (Caprock, TX) | West Texas A&M HS Classic(TX), 2015-03-13(#1) |
| B-400 | 143 | 49.72 | Johnson, Sam (2015) (Hanks, TX) | Amarillo Relays(TX), 2015-03-27(#1) |
| B-400 | 143 | 49.72 | Alston, Norvel (2015) (Chilton, TX) | TX 2A State Meet(TX), 2015-05-16(#1) |
| B-400 | 146 | 49.73 | Nelson, Kyle (2015) (Atascocita, TX) | Texas Southern Relays(TX), 2015-03-21(#6) |
| B-400 | 146 | 49.73 | Stewart, Tyrone (2017) (Waco, TX) | TX 5A District 17 Hutto(TX), 2015-04-15(#3) |
| B-400 | 146 | 49.73 | Sekyere, Yaw (2015) (Naaman Forest, TX) | TX 6A Area 11-12 Garland(TX), 2015-04-24(#4) |
| B-400 | 149 | 49.74 | Redden, TK (2015) (Pine Tree, TX) | Hallsville Relays(TX), 2015-03-19(#1) |
| B-400 | 149 | 49.74 | Timms, Elijah (2017) (Mason, TX) | Tivy Antler Relays(TX), 2015-03-06(#1) |
| B-400 | 149 | 49.74 | Tatum, Karoan (2015) (Mexia, TX) | TX 4A Area 17-18 Waco(TX), 2015-04-22(#2) |
| B-400 | 149 | 49.74 | Crane, Isiah (2015) (Brazoswood, TX) | TX 4A Region 4 Kingsville(TX), 2015-05-02(#2) |
| B-400 | 149 | 49.74 | Sholars, Gregory (2018) (Country Day, TX) | USATF JO Region 12 Qualifier(TX), 2015-07-11(#3) |
| B-400 | 154 | 49.75 | Holston, Chauncee (2016) (Round Rock, TX) | TX 6A Area 13-14 Marble Falls(TX), 2015-04-23(#2) |
| B-400 | 154 | 49.75 | Ross, Donald (2016) (Timber Creek, TX) | TX 6A District 5 Keller(TX), 2015-04-09(#2) |
| B-400 | 154 | 49.75 | Talton, Tron (2015) (Westside, TX) | TX 6A Area 19-20 Houston(TX), 2015-04-23(#3) |
| B-400 | 154 | 49.75 | Zamzow, Colby (2016) (Goliad, TX) | TX 3A Region 4 Converse(TX), 2015-05-02(#2) |
| B-400 | 158 | 49.76 | Robertson, Chevy (2016) (Brownwood, TX) | TX 4A Region 1 Lubbock(TX), 2015-05-02(#3) |
| B-400 | 159 | 49.78 | Hernandez, Abel (2016) (Early, TX) | TX 3A Region 1 Abilene(TX), 2015-05-02(#3) |
| B-400 | 159 | 49.78 | Navarro, Agustin (2015) (The Village, TX) | TX TAPPS 4A State Meet(TX), 2015-05-09(#3) |
| B-400 | 161 | 49.80 | Duncan, Chase (2015) (Holliday, TX) | TX 3A Region 2 Whitehouse(TX), 2015-05-02(#3) |
| B-400 | 162 | 49.81 | Miller, Emmonie (2016) (Denton, TX) | TX 5A District 5 Ft Worth(TX), 2015-04-15(#2) |
| B-400 | 162 | 49.81 | Winningham, Dwuane (2015) (Atascocita, TX) | TX 6A District 16 Humble(TX), 2015-04-16(#5) |
| B-400 | 162 | 49.81 | Estrada, Justin (2016) (Greenhill, TX) | SPC Championships(TX), 2015-05-01(#1) |
| B-400 | 165 | 49.82 | Marshall, Sean (2017) (Cypress Ranch , TX) | USATF World Youth Trials(IL), 2015-07-01(#1) |
| B-400 | 166 | 49.83 | Welford, Kai (2016) (Ball, TX) | Clear Springs Relays(TX), 2015-04-02(#3) |
| B-400 | 167 | 49.84 | Burrhus, Jack (2015) (Foster, TX) | TX 5A Region 3 Huntsville(TX), 2015-05-02(#6) |
| B-400 | 167 | 49.84 | Gorman, Cory (2016) (George Ranch, TX) | TX 5A Region 3 Huntsville(TX), 2015-05-02(#7) |
| B-400 | 169 | 49.85 | Holman, Joshua (2016) (College Park, TX) | Rice All-Comers 5-28(TX), 2015-05-28(#4) |
| B-400 | 170 | 49.88 | Blackford, Mason (2015) (The Woodlands, TX) | Rice Victor Lopez Classic(TX), 2015-04-04(#7) |
| B-400 | 171 | 49.89 | Corrigeux, Jacob (2015) (North Shore, TX) | TX 6A Area 21-22 North Shore(TX), 2015-04-23(#4) |
| B-400 | 172 | 49.92 | Somerville, Keshawn (2016) (Hendrickson, TX) | Kileen ISD Relays(TX), 2015-03-13(#2) |
| B-400 | 172 | 49.92 | Moos, Cody (2015) (Medina Valley, TX) | TX 5A Area 29-30 Alice(TX), 2015-04-25(#2) |
| B-400 | 174 | 49.93 | Ford, Daniel (2016) (Manvel, TX) | Rice All-Comers 5-28(TX), 2015-05-28(#5) |
| B-400 | 175 | 49.95 | Lipscomb, Darrien (2016) (Houston, TX) | TX 6A District 4 Arlington(TX), 2015-04-15(#3) |
| B-400 | 176 | 49.96 | Engbrock, Ian (2016) (Lovejoy, TX) | TX 5A District 10 Wylie(TX), 2015-04-09(#4) |
| B-400 | 177 | 49.98 | Walker, Christopher (2015) (Mansfield Summit, TX) | TX 5A District 14 Lancaster(TX), 2015-04-16(#3) |
| B-400 | 178 | 51.44 | Sowalskie, Seth (2015) (HSAA, TX) | Home School Nationals(MO), 2015-05-10(#1) |
| B-400 | 179 | 51.54 | Chesney, Nathen (2017) (Trinity Christian, TX) | TX Meet of Champions(TX), 2015-05-23(#4) |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | See more performances for B-400 | | |
