| Event | Rank | Mark | By | Meet |
| B-300H | 1 | 36.94 | Watson, Will (2016) (Belton, TX) (US#14) | TX 6A State Meet(TX), 2015-05-16(#2) |
| B-300H | 2 | 37.52 | O'Neal, Damian (2015) (Summer Creek, TX) (US#46) | TX 6A Area 15-16 Humble(TX), 2015-04-23(#1) |
| B-300H | 3 | 37.54 | Thomas, Dewitt (2015) (Kingwood, TX) (US#51) | TX 6A District 16 Humble(TX), 2015-04-16(#1) |
| B-300H | 4 | 37.56 | Code, Jokerious (2015) (Summer Creek, TX) (US#55) | Clear Springs Relays(TX), 2015-04-02(#1) |
| B-300H | 5 | 37.64 | McWilliams, Marcus (2015) (Pflugerville, TX) (US#62) | TX 6A District 13 Rouse(TX), 2015-04-09(#1) |
| B-300H | 6 | 37.65 | Macharia, Kirema (2015) (Round Rock, TX) (US#63) | TX 6A District 13 Rouse(TX), 2015-04-09(#2) |
| B-300H | 7 | 38.20 | Allison, Kristropher (2015) (Summer Creek, TX) | TX 6A Area 15-16 Humble(TX), 2015-04-23(#3) |
| | | National Elites above. State Elites below | | |
| B-300H | 8 | 38.43 | Toliver, Damerian (2015) (Klein Forest, TX) | TX 6A District 15 Klein(TX), 2015-04-09(#1) |
| B-300H | 9 | 38.50 | Holman, Joshua (2016) (College Park, TX) | Rice Victor Lopez Classic(TX), 2015-04-04(#4) |
| B-300H | 10 | 38.66 | Story, Gavin (2016) (Klein Collins, TX) | TX 6A Area 15-16 Humble(TX), 2015-04-23(#5) |
| B-300H | 11 | 38.69 | Swoopes, Dominic (2016) (Kingwood, TX) | TX 6A District 16 Humble(TX), 2015-04-16(#5) |
| B-300H | 12 | 38.81 | Johnson, Savon (2015) (Spring, TX) | TX 6A Area 15-16 Humble(TX), 2015-04-23(#6) |
| B-300H | 13 | 39.11 | Abercrombie, Warren (2015) (Midway, TX) | TX 6A Area 11-12 Garland(TX), 2015-04-24(#1) |
| B-300H | 14 | 39.14 | Westover, Chase (2015) (Westwood, TX) | TX 6A Region 2 Baylor(TX), 2015-05-02(#8) |
| B-300H | 15 | 39.34 | Compton, Coree (2016) (Garland, TX) | TX 6A Region 2 Baylor(TX), 2015-05-02(#9) |
| B-300H | 16 | 39.40 | Kennedy, Ian (2015) (The Woodlands, TX) | TX 6A District 16 Humble(TX), 2015-04-16(#6) |
| B-300H | 17 | 39.47 | Jackson, Christian (2016) (Ellison, TX) | TX 6A Area 11-12 Garland(TX), 2015-04-24(#4) |
| B-300H | 18 | 39.56 | Brown, Willie (2015) (North Garland, TX) | TX 6A Area 11-12 Garland(TX), 2015-04-24(#5) |
| B-300H | 19 | 39.84 | Ripley, Marcus (2015) (Klein Oak, TX) | TX 6A District 15 Klein(TX), 2015-04-09(#4) |
| B-300H | 19 | 39.84 | White, Darent (2015) (Westfield, TX) | TX 6A District 15 Klein(TX), 2015-04-09(#4) |
| B-300H | 21 | 39.86 | Wright, Matthew (2016) (McNeil, TX) | TX 6A Region 2 Baylor(TX), 2015-05-02(#11) |
| B-300H | 22 | 39.89 | Kelly, Patrick (2016) (College Park, TX) | Cy-Fair ISD Relays(TX), 2015-03-20(#7) |
| B-300H | 23 | 39.90 | Cooper, Joshua (2015) (Summer Creek, TX) | Pasadena ISD Brown Relays(TX), 2015-02-20(#3) |
| B-300H | 24 | 40.01 | Woods, Ethan (2016) (North Garland, TX) | Argyle Invitational(TX), 2015-03-13(#1) |
| B-300H | 25 | 40.20 | Kelly, John (2016) (College Park, TX) | TX 6A District 16 Humble(TX), 2015-04-16(#8) |
| B-300H | 26 | 40.34 | Crawford, Keegan (Atascocita, TX) | TX 6A District 16 Sub-Varsity Oak Ridge(TX), 2015-04-09(#1) |
| B-300H | 27 | 40.36 | Wuensch, Mason (2016) (The Woodlands, TX) | TX 6A District 16 Sub-Varsity Oak Ridge(TX), 2015-04-09(#1) |
| B-300H | 27 | 40.36 | Baker, Jamaal (2015) (Cedar Ridge, TX) | TX 6A District 13 Rouse(TX), 2015-04-09(#5) |
| B-300H | 29 | 40.37 | Semenuk, Preston (2017) (Richardson, TX) | TX 6A Region 2 Baylor(TX), 2015-05-02(#13) |
| B-300H | 30 | 40.38 | Hopkins, Nick (2015) (Kingwood, TX) | TX 6A District 16 Humble(TX), 2015-04-16(#9) |
| B-300H | 31 | 40.42 | Prince, Patrick (2015) (Oak Ridge, TX) | TX 6A District 16 Humble(TX), 2015-04-16(#10) |
| B-300H | 32 | 40.46 | Berry, Xavier (2016) (Midway, TX) | TAAF Games Region 5 Waco(TX), 2015-07-11(#1) |
| B-300H | 33 | 40.47 | Sharp, Davore (2015) (Westfield, TX) | Tomball Cougar Relays(TX), 2015-03-06(#1) |
| B-300H | 34 | 40.50 | Jaymez, Kevin (2016) (Oak Ridge, TX) | TX 6A District 16 Humble(TX), 2015-04-16(#11) |
| B-300H | 35 | 40.62 | Gordon, Trent (2018) (Oak Ridge, TX) | TX 6A District 16 Sub-Varsity Oak Ridge(TX), 2015-04-09(#2) |
| B-300H | 36 | 40.63 | Wood, Justin (2015) (North Mesquite, TX) | TX 6A District 10 Mesquite(TX), 2015-04-15(#1) |
| B-300H | 37 | 40.73 | Rose, Hayden (2015) (Rowlett, TX) | TX 6A District 11 Rockwall(TX), 2015-04-16(#3) |
| B-300H | 38 | 40.74 | Richardson, Zach (2015) (The Woodlands, TX) | College Park Invitational(TX), 2015-03-28(#10) |
| B-300H | 39 | 40.76 | Patrick, David (2017) (Lake Travis, TX) | TX 6A District 14 Austin(TX), 2015-04-09(#1) |
| B-300H | 40 | 40.80 | Morton, Aaron (2016) (Rowlett, TX) | TX 6A District 11 Rockwall(TX), 2015-04-16(#4) |
| B-300H | 41 | 40.81 | Lewis, Darion (2015) (Skyline, TX) | Rockwall Jacket Classic(TX), 2015-02-14(#2) |
| B-300H | 41 | 40.81 | Brown, Desmond (2016) (Shoemaker, TX) | TX 6A Area 11-12 Garland(TX), 2015-04-24(#6) |
| B-300H | 43 | 40.95 | Helm, Matt (2015) (Dallas Jesuit, TX) | TX 6A District 9 Dallas Jesuit(TX), 2015-04-16(#1) |
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