| Event | Rank | Mark | By | Meet |
| B-400 | 1 | 47.83 | Salcido, Carlos (2015) (Rock Springs, WY) (US#87) | UVU HS Invitational(UT), 2015-03-28(#1) |
| | | National Elites above. State Elites below | | |
| B-400 | 2 | 48.42 | Wood, Jackson (2015) (Cheyenne Central, WY) | WY Class 4A State Meet(WY), 2015-05-23(#2) |
| B-400 | 3 | 49.31 | Nolan, William (2017) (Cheyenne South, WY) | WY Class 4A State Meet(WY), 2015-05-23(#3) |
| B-400 | 4 | 49.54 | Hepp, Taylor (2015) (Buffalo, WY) | WY Class 3A State Meet(WY), 2015-05-23(#1) |
| B-400 | 5 | 49.75 | Davila, Hunter (2015) (Kelly Walsh, WY) | WY Class 4A State Meet(WY), 2015-05-23(#4) |
| B-400 | 5 | 49.75 | Marx, Jace (2015) (Big Piney, WY) | WY Class 2A State Meet(WY), 2015-05-23(#1) |
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| | | See more performances for B-400 | | |
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