| Event | Rank | Mark | By | Meet |
| B-400 | 1 | 47.63 | Ashby, Nick (2015) (Orem, UT) (US#60) | Great Southwest Classic(NM), 2015-06-06(#6) |
| B-400 | 2 | 47.70 | Heiner, Chase (2015) (Provo, UT) (US#68) | UT 4A State Meet(UT), 2015-05-16(#1) |
| | | National Elites above. State Elites below | | |
| B-400 | 3 | 48.55 | Wahinehookae, Inoa (2015) (Spanish Fork, UT) | UT 4A State Meet(UT), 2015-05-16(#3) |
| B-400 | 4 | 48.57 | Andam, Skyler (2016) (Copper Hills, UT) | UT Region 3 Championships(UT), 2015-05-06(#1) |
| B-400 | 5 | 48.60 | Tillett, Isaac (2016) (South Summit, UT) | UT 2A State Meet(UT), 2015-05-16(#1) |
| B-400 | 6 | 48.64 | Morley, Max (2015) (San Juan, UT) | UT 2A State Meet(UT), 2015-05-16(#2) |
| B-400 | 7 | 48.76 | Toone, Alex (2015) (Tooele, UT) | UT 3A State Meet(UT), 2015-05-16(#1) |
| B-400 | 8 | 48.99 | Van Dyke, Noah (2015) (Mountain View, UT) | BYU Invitational(UT), 2015-05-02(#2) |
| B-400 | 9 | 49.00 | Eldridge, Spencer (2016) (Juab, UT) | BYU Invitational(UT), 2015-05-02(#3) |
| B-400 | 10 | 49.15 | Woodhall, Hunter (2017) (Syracuse, UT) | Great Southwest Classic(NM), 2015-06-06(#14) |
| B-400 | 11 | 49.26 | Perez, Johnny (2015) (Logan, UT) | UT 4A State Meet(UT), 2015-05-16(#4) |
| B-400 | 12 | 49.31 | Cannon, Taylor (2015) (Springville, UT) | BYU Invitational(UT), 2015-05-02(#5) |
| B-400 | 13 | 49.40 | Atkinson, Daunte (2015) (Syracuse, UT) | Davis Invitational(UT), 2015-04-25(#2) |
| B-400 | 14 | 49.42 | Strong, Talon (2015) (Uintah, UT) | BYU Invitational(UT), 2015-05-02(#7) |
| B-400 | 15 | 49.54 | Tovar, Junior (2016) (Orem, UT) | UT 4A State Meet(UT), 2015-05-16(#5) |
| B-400 | 16 | 49.57 | Kinsey, Brandon (2015) (Woods Cross, UT) | Pineview Invitational(UT), 2015-03-28(#1) |
| B-400 | 17 | 49.76 | Sharp, Nathan (2015) (Desert Hills, UT) | UT 3A State Meet(UT), 2015-05-16(#3) |
| B-400 | 18 | 49.79 | Porter, Cardon (2015) (Sky View, UT) | BYU Invitational(UT), 2015-05-02(#10) |
| B-400 | 18 | 49.79 | Dority, Braedon (2016) (Bingham, UT) | UT 5A State Meet(UT), 2015-05-16(#3) |
| B-400 | 20 | 49.80 | Pendleton, Isaac (2016) (Spanish Fork, UT) | UT 4A State Meet(UT), 2015-05-16(#7) |
| B-400 | 21 | 49.94 | Tycksen, Dallin (2016) (Herriman, UT) | UT Region 4 Championships(UT), 2015-05-06(#1) |
| B-400 | 22 | 49.95 | Goldsberry, Jordan (Davis, UT) | BYU Invitational(UT), 2015-05-02(#12) |
| B-400 | 23 | 50.00 | Sarles, Josiah (2015) (Panguitch, UT) | BYU Invitational(UT), 2015-05-02(#2) |
| B-400 | 24 | 59.00 | Critchfield, Nicole (2018) (Corner Canyon, UT) | Pineview Invitational(UT), 2015-03-28(#2) |
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| | | See more performances for B-400 | | |
