| Event | Rank | Mark | By | Meet |
| | | National Elites above. State Elites below | | |
| B-400 | 1 | 48.68 | Alexander, Justin (2015) (Crenshaw, CA) | Arcadia Invitational(CA), 2015-04-11(#3) |
| B-400 | 2 | 49.25 | Hasson, Brandon (2015) (Carson, CA) | CIF-LA City Prelims(CA), 2015-05-21(#2) |
| B-400 | 3 | 49.43 | Cooley, Raymond (2015) (George Washington Prep, CA) | South Pasadena Tiger Invitational(CA), 2015-04-10(#1) |
| B-400 | 4 | 49.49 | Hardin, Keyon (2015) (Dorsey, CA) | Arcadia Invitational(CA), 2015-04-11(#7) |
| B-400 | 5 | 49.50 | Bell, Daniel (2015) (View Park Prep, CA) | Birmingham Rotary Invitational(CA), 2015-04-25(#1) |
| B-400 | 6 | 49.56 | Riley, Sean (2016) (Narbonne, CA) | CIF-LA City Finals(CA), 2015-05-28(#2) |
| B-400 | 7 | 49.76 | Tanner, Dominic (2016) (Granada Hills Charter, CA) | CIF-LA City Prelims(CA), 2015-05-21(#5) |
| B-400 | 8 | 49.77 | Atangana, Christian (2016) (North Hollywood, CA) | Aztec Invitational(CA), 2015-03-28(#1) |
| B-400 | 9 | 50.33 | Banks, Joseph (2017) (Hamilton, CA) | CIF-LA City Finals(CA), 2015-05-28(#4) |
| B-400 | 10 | 50.45 | Stamps, Jaylen (2016) (Dorsey, CA) | Pasadena Games(CA), 2015-03-28(#9) |
| B-400 | 11 | 50.54 | Lo, Brandon (2016) (Lincoln, CA) | CIF-LA City Finals(CA), 2015-05-28(#1) |
| B-400 | 12 | 50.56 | Scott, Brenden (2015) (Carson, CA) | UCLA Legends Invitational(CA), 2015-04-04(#10) |
| B-400 | 13 | 50.57 | Sackett, Aaustin (2016) (Hamilton, CA) | CIF-LA City Prelims(CA), 2015-05-21(#4) |
| B-400 | 14 | 50.72 | Parker, Anthonee (2015) (Hamilton, CA) | Birmingham Rotary Invitational(CA), 2015-04-25(#2) |
| B-400 | 15 | 50.87 | Jackson, Daveron (2016) (Carson, CA) | South Bay (LA) Championships(CA), 2015-04-18(#3) |
| B-400 | 16 | 50.93 | Mcguines, Athony (2015) (Dorsey, CA) | CIF-LA City Prelims(CA), 2015-05-21(#8) |
| B-400 | 17 | 50.99 | Thomas, Johnathan (Chavez, CA) | Birmingham Rotary Invitational(CA), 2015-04-25(#3) |
| B-400 | 18 | 51.09 | Christian, Atangana (North Hollywood, CA) | Birmingham Rotary Invitational(CA), 2015-04-25(#4) |
| B-400 | 18 | 51.09 | Husband, Mahkai (2016) (Palisades Charter, CA) | Pasadena Games(CA), 2015-03-28(#14) |
| B-400 | 20 | 51.12 | McGiness, Anthony (2015) (Dorsey, CA) | Birmingham Rotary Invitational(CA), 2015-04-25(#5) |
| B-400 | 21 | 51.17 | Hardy, Justin (2017) (George Washington Prep, CA) | CIF-LA City Prelims(CA), 2015-05-21(#11) |
| B-400 | 22 | 51.39 | Gamboa, Eric (2016) (Taft, CA) | West Valley League Finals(CA), 2015-05-15(#2) |
| B-400 | 23 | 51.45 | Nunez, Mark (2017) (Dorsey, CA) | Pasadena Games(CA), 2015-03-28(#1) |
| B-400 | 24 | 51.50 | Robles, German (2016) (Monroe, CA) | CIF-LA City Prelims(CA), 2015-05-21(#13) |
| B-400 | 25 | 51.60 | Adkins, Anje (2015) (El Camino Real, CA) | CIF-LA City Prelims(CA), 2015-05-21(#14) |
| B-400 | 26 | 51.61 | Joseph, Robin (2015) (Bravo (Francisco) Medical Magnet, CA) | CIF-LA City Prelims(CA), 2015-05-21(#15) |
| B-400 | 27 | 51.63 | Angelo, Marquel (2016) (Carson, CA) | Pasadena Games(CA), 2015-03-28(#18) |
| B-400 | 28 | 51.82 | Bolden, Anthony (2015) (San Pedro, CA) | CIF-LA City Prelims(CA), 2015-05-21(#16) |
| B-400 | 29 | 51.83 | Zackery, Dominique (2016) (Dorsey, CA) | CIF-LA City Prelims(CA), 2015-05-21(#17) |
| B-400 | 30 | 52.07 | Husband, Makahi (2016) (Palisades Charter, CA) | Redondo Nike Invitational(CA), 2015-03-14(#20) |
| B-400 | 31 | 52.11 | Hernandez, Alfredo (2015) (Granada Hills Charter, CA) | Simi Valley Invitational(CA), 2015-03-14(#5) |
| B-400 | 32 | 52.20 | Contis, Jonathan (2017) (El Camino Real, CA) | West Valley League Finals(CA), 2015-05-15(#4) |
| B-400 | 33 | 52.23 | Mcghee, Doug (2016) (Palisades Charter, CA) | CIF-LA City Prelims(CA), 2015-05-21(#18) |
| B-400 | 34 | 52.26 | Munoko, Junior (2016) (Marshall, CA) | CIF-LA City Prelims(CA), 2015-05-21(#20) |
| B-400 | 35 | 52.35 | Mendelsohn, Noah (2016) (Taft, CA) | CIF-LA City Prelims(CA), 2015-05-21(#21) |
| B-400 | 36 | 52.39 | Lennartz, Patrick (2016) (Taft, CA) | West Valley League Finals(CA), 2015-05-15(#3) |
| B-400 | 37 | 52.40 | Williams, Amari (2018) (Dorsey, CA) | Birmingham Rotary Invitational(CA), 2015-04-25(#2) |
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| | | See more performances for B-400 | | |
