| Event | Rank | Mark | By | Meet |
| B-300H | 1 | 37.07 | Johnson, Cody (2016) (Franklin, TX) (US#18) | TX 6A Region 1 Arlington(TX), 2015-05-02(#1) |
| B-300H | 2 | 37.08 | Douglas, Bryce (2016) (Allen, TX) (US#19) | TX 6A Region 1 Arlington(TX), 2015-05-02(#2) |
| B-300H | 3 | 37.20 | Serrano, Jesus (2016) (Abilene, TX) (US#25) | TX 6A Region 1 Arlington(TX), 2015-05-02(#3) |
| B-300H | 4 | 37.30 | Armstead, Chevis (2015) (DeSoto, TX) (US#30) | Texas Relays(TX), 2015-03-28(#5) |
| B-300H | 5 | 37.77 | Williams, Corey (2017) (Tascosa, TX) (US#75) | Canyon Relays(TX), 2015-03-06(#2) |
| B-300H | 6 | 38.14 | Harper, Madre (2016) (Lamar, TX) | TX 6A District 4 Arlington(TX), 2015-04-15(#1) |
| B-300H | 7 | 38.24 | Brockman, Charles (2017) (Plano, TX) | TX 6A District 6 Marcus(TX), 2015-04-16(#2) |
| B-300H | 8 | 38.30 | Carr, Ardran (2016) (Bowie, TX) | TX 6A Area 3-4 Abilene(TX), 2015-04-24(#2) |
| | | National Elites above. State Elites below | | |
| B-300H | 9 | 38.80 | Itoka, Kyle (2017) (Richland, TX) | TX 6A Area 7-8 Cedar Hill(TX), 2015-04-22(#2) |
| B-300H | 10 | 38.91 | Dixon, Kiyana (2015) (Allen, TX) | New England Championships(ME), 2015-06-13(#4) |
| B-300H | 11 | 39.03 | Newsome, Calahan (2017) (Amarillo, TX) | Great Southwest Classic(NM), 2015-06-06(#9) |
| B-300H | 12 | 39.20 | Saldivar, Jacob (2016) (Tascosa, TX) | TX 6A Area 1-2 El Paso(TX), 2015-04-24(#2) |
| B-300H | 13 | 39.21 | Duhon, Kameron (2016) (Southlake Carroll, TX) | TX 6A District 7 Coppell(TX), 2015-04-14(#1) |
| B-300H | 14 | 39.27 | Dodson, Harrison (2017) (Marcus, TX) | TX 6A Region 1 Arlington(TX), 2015-05-02(#7) |
| B-300H | 15 | 39.28 | Henderson, Dylan (2016) (Duncanville, TX) | Lancaster Meet of Champions(TX), 2015-03-06(#2) |
| B-300H | 16 | 39.33 | Keeton, Marcel (2016) (Cedar Hill, TX) | TX 6A Region 1 Arlington(TX), 2015-05-02(#9) |
| B-300H | 17 | 39.36 | Howard, Nic (2016) (Duncanville, TX) | TX 6A Region 1 Arlington(TX), 2015-05-02(#10) |
| B-300H | 18 | 39.37 | Callaway, Will (2017) (Plano West, TX) | TX 6A District 6 Marcus(TX), 2015-04-16(#3) |
| B-300H | 19 | 39.41 | Cross, Terrell (2015) (Ryan, TX) | TX 6A Area 5-6 Justin(TX), 2015-04-24(#3) |
| B-300H | 20 | 39.76 | Cognasi, J.P. (2015) (Amarillo, TX) | TX 6A Region 1 Arlington(TX), 2015-05-02(#12) |
| B-300H | 21 | 39.97 | Garrett, Chandler (2016) (Marcus, TX) | TX 6A District 6 Marcus(TX), 2015-04-16(#5) |
| B-300H | 22 | 40.04 | Iromuanya, Ikechi (2016) (Allen, TX) | TX 6A District 6 Marcus(TX), 2015-04-16(#6) |
| B-300H | 23 | 40.07 | Sharpe, Jaylen (2016) (Allen, TX) | TX 6A District 6 Marcus(TX), 2015-04-16(#7) |
| B-300H | 24 | 40.09 | Juarez, Zach (2015) (Eastwood, TX) | TX 6A District 1 El Paso(TX), 2015-04-17(#2) |
| B-300H | 25 | 40.37 | Wheeler, Sabrien (2015) (DeSoto, TX) | TX 6A District 8 Cedar Hill(TX), 2015-04-09(#5) |
| B-300H | 26 | 40.40 | Latson, Marquis (2015) (Abilene, TX) | TX 6A District 3 Midland(TX), 2015-04-17(#2) |
| B-300H | 27 | 40.51 | Dean, Quantrell (2016) (Lewisville, TX) | TAAF Games of Texas(TX), 2015-08-02(#4) |
| B-300H | 28 | 40.55 | Gonzalez, Elier (2015) (Bell, TX) | TX 6A Area 7-8 Cedar Hill(TX), 2015-04-22(#6) |
| B-300H | 29 | 40.57 | Ikeakor, Emmanuel (2016) (Franklin, TX) | TX 6A Area 1-2 El Paso(TX), 2015-04-24(#5) |
| B-300H | 30 | 40.60 | Jordan, QuiVell (2017) (DeSoto, TX) | Eddie Payne Carter Shootout(TX), 2015-04-04(#4) |
| B-300H | 31 | 40.61 | Mitchell, Marcus (2015) (Coppell, TX) | TX 6A District 7 Coppell(TX), 2015-04-14(#3) |
| B-300H | 32 | 40.69 | Robinson, Jaylon (2018) (Paschal, TX) | Saginaw Relays(TX), 2015-03-28(#1) |
| B-300H | 33 | 40.71 | Colmery, Robert (2015) (Plano West, TX) | Plano East Invite(TX), 2015-03-19(#2) |
| B-300H | 34 | 40.74 | Arnold, Nathan (Marcus, TX) | TX 6A District 6 Marcus(TX), 2015-04-16(#8) |
| B-300H | 35 | 40.80 | Cuellar, Bryson (2017) (Eastwood, TX) | EP Americas Invitational(TX), 2015-04-02(#2) |
| B-300H | 36 | 40.91 | Mcbain, Austin (2017) (Eastwood, TX) | TX 6A District 1 El Paso(TX), 2015-04-17(#3) |
| B-300H | 37 | 40.94 | Slater, Keiko (2016) (Martin, TX) | Kennedale Invitational(TX), 2015-04-02(#3) |
| B-300H | 38 | 40.96 | Sherlin, Brandon (2015) (Coronado, TX) | Canyon Relays(TX), 2015-03-06(#5) |
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