| Event | Rank | Mark | By | Meet |
| B-400 | 1 | 48.94 | Jewett, Isaiah (2015) (Cathedral, CA) (US#34) | Simplot Games(ID), 2015-02-21(#2) |
| B-400 | 2 | 49.17 | Harris, Mar'Yea (2015) (Wilson, CA) (US#47) | Simplot Games(ID), 2015-02-21(#3) |
| B-400 | 3 | 50.29 | Cardoza, Garrett (2016) (Whitney, CA) | Capital Valley Conference Center Meet 1A(CA), 2015-03-18(#1) |
| | | National Elites above. State Elites below | | |
| B-400 | 4 | 50.84 | Hall, Chris (2017) (Long Beach Poly, CA) | Simplot Games(ID), 2015-02-21(#12) |
| B-400 | 5 | 51.09 | Easter, Anthony (2017) (Eleanor Roosevelt, CA) | Simplot Games(ID), 2015-02-21(#13) |
| B-400 | 6 | 51.86 | Peters, Dimitrius (2016) (Santa Margarita, CA) | UW HS Invitational(WA), 2015-02-07(#5) |
| B-400 | 7 | 52.48 | Echeveria, Logan (2016) (Antelope, CA) | Capital Valley Conference Center Meet 1A(CA), 2015-03-18(#2) |
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| | | See more performances for B-400 | | |
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