| Event | Rank | Mark | By | Meet |
| B-400 | 408 | 51.37 | Salgado, Kiasa (2017) (Santa Barbara, CA) | Ventura Invitational(CA), 2015-03-14(#1) |
| B-400 | 408 | 51.37 | Contreras, Cesar (2016) (Patriot, CA) | River Valley League Finals(CA), 2015-05-06(#1) |
| B-400 | 408 | 51.37 | Adafom, Kyle (2016) (Kimball, CA) | CIF-SJS Division II and III Prelims(CA), 2015-05-20(#10) |
| B-400 | 411 | 51.39 | Plummer, Armon (2016) (Junipero Serra, CA) | Sacred Heart at Serra(CA), 2015-04-15(#1) |
| B-400 | 411 | 51.39 | Chambers, Kaylon (2016) (Central, CA) | Buchanan Auto Time Meet(CA), 2015-03-20(#2) |
| B-400 | 411 | 51.39 | Gamboa, Eric (2016) (Taft, CA) | West Valley League Finals(CA), 2015-05-15(#2) |
| B-400 | 414 | 51.40 | Thomas, James (2018) (Alemany, CA) | Mission League Prelims/Finals(CA), 2015-05-07(#8) |
| B-400 | 415 | 51.41 | Williams, Rontavist (2016) (Angelo Rodriguez, CA) | Vallejo Relays(CA), 2015-03-07(#4) |
| B-400 | 415 | 51.41 | Gomez, Funez (2018) (Mission Viejo, CA) | Beach Cities Invitational(CA), 2015-03-28(#8) |
| B-400 | 415 | 51.41 | Reynolds, Austin (2016) (Loyola, CA) | Mission League Prelims/Finals(CA), 2015-05-07(#9) |
| B-400 | 415 | 51.41 | Sires-Wils, Isaiah (2015) (Willow Glen, CA) | BVAL Mt. Hamilton Prelims/Finals(CA), 2015-05-07(#1) |
| B-400 | 415 | 51.41 | Hitchcock, Pricer (2015) (San Luis Obispo, CA) | PAC 8 League Finals(CA), 2015-05-07(#2) |
| B-400 | 420 | 51.43 | Clark, Hunter (2016) (San Clemente, CA) | South County Classic(CA), 2015-03-13(#5) |
| B-400 | 420 | 51.43 | Goodloe, Devin (2015) (Rancho Bernardo, CA) | Rancho Bernardo at La Costa Canyon (CA), 2015-03-26(#1) |
| B-400 | 420 | 51.43 | Pulliam, Assante (2015) (Esperanza, CA) | Orange County Championships(CA), 2015-04-25(#12) |
| B-400 | 420 | 51.43 | Rivers, Adham (2016) (Las Plumas, CA) | CIF-NS Finals(CA), 2015-05-29(#3) |
| B-400 | 424 | 51.44 | Terrazas, Charles (2016) (Bonita, CA) | Rosemead Invitational(CA), 2015-03-21(#3) |
| B-400 | 424 | 51.44 | Ford, Anthony (2015) (St. Ignatius, CA) | West Catholic Athletic League Prelims/Finals(CA), 2015-05-15(#5) |
| B-400 | 424 | 51.44 | Englesby, Nick (2017) (Lincoln (S) -SJ, CA) | Lincoln at Merrill West(CA), 2015-05-07(#1) |
| B-400 | 427 | 51.45 | Nunez, Mark (2017) (Dorsey, CA) | Pasadena Games(CA), 2015-03-28(#1) |
| B-400 | 428 | 51.46 | Frash, Ryan (2015) (Pacifica, CA) | Pacifica at Oxnard(CA), 2015-04-15(#1) |
| B-400 | 429 | 51.47 | Turnage, Jared (2015) (Poway, CA) | Escondido Invitational(CA), 2015-05-01(#4) |
| B-400 | 429 | 51.47 | Davila, Alex (2016) (Corning, CA) | Northern Athletic League Finals(CA), 2015-05-15(#1) |
| B-400 | 431 | 51.48 | Palomares, Cesar (2015) (Orange Glen, CA) | CIF-SDS Prelims(CA), 2015-05-23(#10) |
| B-400 | 432 | 51.49 | De Mello, Jimmy (2015) (Westlake, CA) | Birmingham at Westlake(CA), 2015-03-12(#3) |
| B-400 | 432 | 51.49 | Jones, Joshua (2016) (Silverado, CA) | Inland Empire Championships(CA), 2015-04-25(#8) |
| B-400 | 432 | 51.49 | Jr., Sam (2015) (South Pasadena, CA) | Rio Hondo League Finals(CA), 2015-05-08(#4) |
| B-400 | 432 | 51.49 | Jauregui, Jose (2016) (Palm Springs, CA) | CIF-SS Division 3 Prelims(CA), 2015-05-16(#19) |
| B-400 | 432 | 51.49 | Kizunga, Fiston (2015) (Andrew Hill, CA) | Blossom Valley Athletic League Prelims/Finals(CA), 2015-05-14(#1) |
| B-400 | 437 | 51.50 | Mccabe, Michael (2017) (Centennial -CE, CA) | Wildcat Invitational(CA), 2015-03-21(#2) |
| B-400 | 437 | 51.50 | Robles, German (2016) (Monroe, CA) | CIF-LA City Prelims(CA), 2015-05-21(#13) |
| B-400 | 439 | 51.51 | Saunders, Zaire (2016) (San Jacinto, CA) | West Valley vs San Jacinto(CA), 2015-04-30(#2) |
| B-400 | 439 | 51.51 | Johnson-Millan, Jakeyl (2015) (Cosumnes Oaks, CA) | Capital Valley Conference Center Meet 3B(CA), 2015-04-29(#2) |
| B-400 | 439 | 51.51 | Scarangello, Nicolas (2016) (Thousand Oaks, CA) | Marmonte League Prelims(CA), 2015-05-05(#4) |
| B-400 | 442 | 51.52 | Garnes, Sylvester (2017) (Foothill -SJ, CA) | Pioneer Valley League Finals(CA), 2015-05-14(#2) |
| B-400 | 442 | 51.52 | Cherry, Tristan (2015) (Patterson, CA) | Hughson Vintage Invitational(CA), 2015-04-18(#2) |
| B-400 | 444 | 51.53 | Geisler, Chasen (2018) (Oaks Christian, CA) | Oaks Christian at Thousand Oaks(CA), 2015-04-02(#1) |
| B-400 | 444 | 51.53 | Fong, Elliot (2015) (Miramonte, CA) | Miramonte at Dougherty Valley(CA), 2015-05-06(#2) |
| B-400 | 446 | 51.54 | Hall, Joshua (2016) (James Logan, CA) | American at Logan(CA), 2015-04-15(#1) |
| B-400 | 446 | 51.54 | Wilson, Austin (2016) (Marina, CA) | Sunset League Finals(CA), 2015-05-07(#3) |
| B-400 | 448 | 51.55 | Singh, Abhishek (2017) (Livingston, CA) | Buchanan West Coast Relays(CA), 2015-04-18(#2) |
| B-400 | 448 | 51.55 | Morrar, Sam (2017) (Laguna Creek, CA) | Glenn Poole Invitational(CA), 2015-04-25(#1) |
| B-400 | 448 | 51.55 | Jackson, Sebastian (Colony, CA) | Mt. Baldy League Finals(CA), 2015-05-07(#3) |
| B-400 | 448 | 51.55 | Rocha, Tommy (2017) (Bellarmine, CA) | West Catholic Athletic League Prelims/Finals(CA), 2015-05-15(#1) |
| B-400 | 448 | 51.55 | Childs, Chance (2015) (Paraclete, CA) | CIF-SS Division 4 Prelims(CA), 2015-05-16(#10) |
| B-400 | 453 | 51.56 | Juarez, Eric (2015) (Madera, CA) | County/Metro League Meet #6(CA), 2015-04-22(#1) |
| B-400 | 453 | 51.56 | Garcia, Juan (2017) (Moorpark, CA) | Coastal Canyon League Finals(CA), 2015-05-08(#2) |
| B-400 | 453 | 51.56 | Johnson, Jzelun (2016) (California, CA) | CIF-NCS Tri-Valley Area Meet(CA), 2015-05-23(#16) |
| B-400 | 456 | 51.57 | Wofford, Javante (2015) (Steele Canyon, CA) | Rancho Bernardo Bronco Invitational(CA), 2015-03-14(#5) |
| B-400 | 456 | 51.57 | Doyle, Thomas (2015) (Bellarmine, CA) | Presentation and St. Ignatius at Bellarmine(CA), 2015-04-29(#1) |
| B-400 | 458 | 51.58 | Zimmerman, Trevor (2016) (Orland, CA) | John Frank Invitational(CA), 2015-04-18(#1) |
| B-400 | 458 | 51.58 | Han, Jack (2016) (Bakersfield, CA) | Liberty Patriot Games(CA), 2015-04-24(#7) |
| B-400 | 458 | 51.58 | Lesko, Cody (2016) (Aliso Niguel, CA) | Orange County Championships(CA), 2015-04-25(#13) |
| B-400 | 458 | 51.58 | Kunde, Cameron (2016) (Nordhoff, CA) | Carpinteria at Nordhoff(CA), 2015-04-28(#1) |
| B-400 | 458 | 51.58 | Matthews, Isaiah (2016) (Sacramento Charter, CA) | Golden West Invitational(CA), 2015-06-13(#9) |
| B-400 | 463 | 51.59 | Sedan, David (2018) (Pittsburg, CA) | Vallejo Relays(CA), 2015-03-07(#1) |
| B-400 | 463 | 51.59 | Kane, Jack (2016) (Las Lomas, CA) | Buchanan West Coast Relays(CA), 2015-04-18(#3) |
| B-400 | 465 | 51.60 | Adkins, Anje (2015) (El Camino Real, CA) | CIF-LA City Prelims(CA), 2015-05-21(#14) |
| B-400 | 465 | 51.60 | Juarez, Hunter (2017) (Marin Catholic, CA) | CIF-NCS Redwood Empire Area Meet(CA), 2015-05-23(#7) |
| B-400 | 467 | 51.61 | Burton, Koty (2016) (La Quinta, CA) | La Quinta at Palm Springs(CA), 2015-04-09(#1) |
| B-400 | 467 | 51.61 | Joseph, Robin (2015) (Bravo (Francisco) Medical Magnet, CA) | CIF-LA City Prelims(CA), 2015-05-21(#15) |
| B-400 | 469 | 51.62 | Joseph, Dejon (2015) (Inderkum, CA) | Welton Moe Moore Relays(CA), 2015-03-14(#2) |
| B-400 | 469 | 51.62 | Downey, Renzo (2015) (Piedmont, CA) | CIF-NCS Bay Shore Area Meet(CA), 2015-05-23(#6) |
| B-400 | 469 | 51.62 | Neuerburg, Brad (2015) (Cardinal Newman, CA) | CIF-NCS Redwood Empire Area Meet(CA), 2015-05-23(#8) |
| B-400 | 472 | 51.63 | Angelo, Marquel (2016) (Carson, CA) | Pasadena Games(CA), 2015-03-28(#18) |
| B-400 | 472 | 51.63 | Falls, Martino (2015) (Jesuit, CA) | Delta League Meet(CA), 2015-04-22(#2) |
| B-400 | 472 | 51.63 | Brown, Cameron (2016) (Long Beach Poly, CA) | Orange County Meet of Champions(CA), 2015-04-25(#5) |
| B-400 | 472 | 51.63 | Boyd, Kory (2015) (Cerritos, CA) | Suburban League Finals(CA), 2015-05-08(#4) |
| B-400 | 472 | 51.63 | Clouse, David (2017) (Nevada Union, CA) | Nevada Union Invitational(CA), 2015-05-08(#6) |
| B-400 | 472 | 51.63 | Willis, Lawrence (2017) (Mira Mesa, CA) | Eastern League Prelims/Finals(CA), 2015-05-15(#5) |
| B-400 | 478 | 51.64 | Kossick, Cooper (2015) (Edison, CA) | Los Alamitos vs Marina vs Edison(CA), 2015-04-02(#2) |
| B-400 | 478 | 51.64 | Godfrey, Josh (2017) (Bonita Vista, CA) | Dick Wilkins Frosh-Soph Invitational(CA), 2015-05-02(#4) |
| B-400 | 478 | 51.64 | Herrera, Roman (2016) (Salinas, CA) | MBL Gabilan & Pacific League Finals(CA), 2015-05-08(#3) |
| B-400 | 478 | 51.64 | Mills, Spencer (2016) (Cupertino, CA) | Santa Clara Valley Athletic League Finals(CA), 2015-05-15(#4) |
| B-400 | 482 | 51.65 | Wilkins, Curtis (2015) (San Diego, CA) | Arnie Robinson Invitational(CA), 2015-04-04(#4) |
| B-400 | 482 | 51.65 | Price, Charles (2016) (Clairemont, CA) | City - Central League Prelims(CA), 2015-05-12(#3) |
| B-400 | 482 | 51.65 | Gilmore, Anthony (2016) (Mt. Miguel, CA) | CIF-SDS Prelims(CA), 2015-05-23(#8) |
| B-400 | 485 | 51.66 | Verba-Hamilton, Aiden (2016) (Archbishop Riordan, CA) | Junipero Serra Top 7 Invitational(CA), 2015-04-11(#4) |
| B-400 | 485 | 51.66 | Ellington, Tristan (2015) (Archbishop Riordan, CA) | West Catholic Athletic League Prelims/Finals(CA), 2015-05-15(#6) |
| B-400 | 487 | 51.67 | Joseph, Brandon (2015) (Riverside Poly, CA) | Rancho Verde vs Riverside Poly(CA), 2015-04-22(#3) |
| B-400 | 487 | 51.67 | Acosta, Esteban (2017) (Granite Hills, CA) | Grossmont League Varsity Prelims/Finals(CA), 2015-05-15(#4) |
| B-400 | 487 | 51.67 | Williams, Noah (2017) (De La Salle, CA) | CIF-NCS Tri-Valley Area Meet(CA), 2015-05-23(#17) |
| B-400 | 487 | 51.67 | Pang, Brendan (2015) (Abraham Lincoln, CA) | CIF-SFS Finals(CA), 2015-05-30(#2) |
| B-400 | 491 | 51.68 | Outhavong, Kaleb (2017) (Folsom, CA) | Folsom Depth Charge(CA), 2015-03-21(#1) |
| B-400 | 491 | 51.68 | Zaragoza, Ulisses (2016) (Tulare Western, CA) | Rafer Johnson Invitational(CA), 2015-03-21(#2) |
| B-400 | 491 | 51.68 | Eckert, Cullen (2016) (Scotts Valley, CA) | Quad Meet at San Lorenzo Valley(CA), 2015-04-08(#1) |
| B-400 | 491 | 51.68 | Peake, Oliver (2017) (Santa Monica, CA) | Ocean League Prelims/Finals(CA), 2015-05-04(#2) |
| B-400 | 495 | 51.69 | Sullivan, Bryce (2015) (Los Alamitos, CA) | Beach Cities Invitational(CA), 2015-03-28(#9) |
| B-400 | 495 | 51.69 | Haase, Matthew (2016) (Cathedral Catholic, CA) | Escondido Invitational(CA), 2015-05-01(#5) |
| B-400 | 495 | 51.69 | Gallino, Anthony (2015) (Enterprise, CA) | Yreka Lions' Invitational(CA), 2015-05-01(#1) |
| B-400 | 495 | 51.69 | Pulido, Damian (2016) (Santa Paula, CA) | Frontier League Finals(CA), 2015-05-07(#1) |
| B-400 | 499 | 51.70 | Retzer, Gabriel (2015) (Carlsbad, CA) | Carlsbad at Poway(CA), 2015-03-19(#3) |
| B-400 | 499 | 51.70 | Kull, Joe (2016) (Los Altos, CA) | Lynbrook at Los Altos(CA), 2015-03-25(#3) |
| B-400 | 499 | 51.70 | Morris, Daimarr (2015) (San Lorenzo, CA) | Oakland Invitational(CA), 2015-03-28(#3) |
| B-400 | 502 | 51.71 | Alvarez, Justin (2016) (Vanden, CA) | Rocklin Thunder Invitational (CA), 2015-04-11(#7) |
| B-400 | 502 | 51.71 | Karahadian, Micah (2015) (Point Loma, CA) | Point Loma at Mira Mesa(CA), 2015-04-30(#3) |
| B-400 | 502 | 51.71 | Ugoh, Uzoma (2015) (Hercules, CA) | CIF-NCS Meet of Champions(CA), 2015-05-30(#22) |
| B-400 | 505 | 51.73 | Thomas, Harrison (2017) (Mt. Carmel, CA) | Palomar League Championships(CA), 2015-05-15(#3) |
| B-400 | 506 | 51.74 | Barrett, Hasani (2015) (Lawndale, CA) | Irvine Invitational(CA), 2015-03-14(#7) |
| B-400 | 506 | 51.74 | Ewing, Cameron (2015) (Newbury Park, CA) | Newbury Park at Thousand Oaks(CA), 2015-04-23(#2) |
| B-400 | 506 | 51.74 | Shen, Andy (2015) (Lynbrook, CA) | SCVAL De Anza League Finals(CA), 2015-05-07(#3) |
| B-400 | 509 | 51.75 | Ray, Micah (2017) (San Juan Hills, CA) | Orange County Championships(CA), 2015-04-25(#3) |
| B-400 | 509 | 51.75 | Terry, Tony (2015) (Vanden, CA) | CIF-SJS Division II and III Prelims(CA), 2015-05-20(#12) |
| B-400 | 511 | 51.76 | Douglas, Brandon (2015) (Los Alamitos, CA) | Whittier and Troy at Los Alamitos (CA), 2015-03-21(#1) |
| B-400 | 511 | 51.76 | Rodriguez, Mason (2018) (Harvard-Westlake, CA) | Mission League Prelims/Finals(CA), 2015-05-07(#11) |
| B-400 | 511 | 51.76 | Babauta, Tre (2017) (Mt. Pleasant, CA) | BVAL Mt. Hamilton Prelims/Finals(CA), 2015-05-07(#2) |
| B-400 | 511 | 51.76 | Danielson, Jordan (2015) (Castle Park, CA) | CIF-SDS Prelims(CA), 2015-05-23(#9) |
| B-400 | 515 | 51.77 | Rodriguez, Sergio (2015) (Redondo Union, CA) | Redondo Union vs. Palos Verdes(CA), 2015-04-23(#3) |
| B-400 | 515 | 51.77 | Santamaria, Denilson (2017) (Segerstrom, CA) | Orange County Championships(CA), 2015-04-25(#4) |
| B-400 | 517 | 51.78 | Almaguer, Issac (2015) (Selma, CA) | CIF-CE Sierra-Sequoia Area Championships(CA), 2015-05-13(#3) |
| B-400 | 517 | 51.78 | Helwig, Jordan (2018) (Ponderosa, CA) | Capital Valley Conference Prelims/Finals(CA), 2015-05-15(#5) |
| B-400 | 517 | 51.78 | Blanding, Brendan (2015) (Santana, CA) | Grossmont League Varsity Prelims/Finals(CA), 2015-05-15(#5) |
| B-400 | 520 | 51.79 | Waters, Trelani (2015) (Mission Hills, CA) | Mission Hill at Orange Glen(CA), 2015-03-05(#1) |
| B-400 | 520 | 51.79 | Orgill, Matt (2015) (Crean Lutheran, CA) | Irvine Invitational(CA), 2015-03-14(#3) |
| B-400 | 520 | 51.79 | Essien, Daniel (2015) (Etiwanda, CA) | Chino Hills vs Etiwanda vs Damien/St Lucy's(CA), 2015-04-14(#1) |
| B-400 | 520 | 51.79 | Lothamer, Parker (2015) (Campolindo, CA) | aCALANES AND Campolindo at Miramonte(CA), 2015-04-15(#2) |
| B-400 | 520 | 51.79 | Westbrook, Brenton (2016) (Mira Costa, CA) | Bay League Finals(CA), 2015-05-08(#4) |
| B-400 | 525 | 51.80 | Avelino, Jacob (2017) (Mountain View, CA) | St. Francis Invitational(CA), 2015-03-21(#4) |
| B-400 | 525 | 51.80 | Hutchinson, Tarik (2017) (Citrus Hill, CA) | Beaumont vs. Citrus Hill(CA), 2015-04-16(#2) |
| B-400 | 525 | 51.80 | Murray, Domanick (2017) (Palm Springs, CA) | Inland Empire Championships(CA), 2015-04-25(#1) |
| B-400 | 525 | 51.80 | Asumana, Jonathan (2015) (Wilcox , CA) | CIF-CCS Prelims(CA), 2015-05-23(#12) |
| B-400 | 529 | 51.81 | Allen, Asa (2015) (Berkeley, CA) | San Leandro and Berkeley at Castro Valley(CA), 2015-04-16(#3) |
| B-400 | 530 | 51.82 | Arora, Samir (2016) (St. Francis, CA) | Riordan at St Francis(CA), 2015-04-29(#1) |
| B-400 | 530 | 51.82 | Salinas, Richard (2015) (California, CA) | CIF-SS Division 1 Prelims(CA), 2015-05-16(#31) |
| B-400 | 530 | 51.82 | Bolden, Anthony (2015) (San Pedro, CA) | CIF-LA City Prelims(CA), 2015-05-21(#16) |
| B-400 | 533 | 51.83 | Zackery, Dominique (2016) (Dorsey, CA) | CIF-LA City Prelims(CA), 2015-05-21(#17) |
| B-400 | 534 | 51.84 | Lubanko, Mitchell (2015) (Murrieta Valley, CA) | Murrieta Valley vs Chaparral(CA), 2015-04-16(#3) |
| B-400 | 534 | 51.84 | Webster, London (2015) (Bell-Jeff, CA) | CIF-SS Division 4 Prelims(CA), 2015-05-16(#11) |
| B-400 | 536 | 51.85 | Moehlenpah, Jaron (2016) (Poway, CA) | Carlsbad at Poway(CA), 2015-03-19(#4) |
| B-400 | 536 | 51.85 | Joslin, Kevin (2015) (Simi Valley, CA) | Ventura County Championships(CA), 2015-05-01(#14) |
| B-400 | 536 | 51.85 | Poindexter, David (2016) (Dos Pueblos, CA) | Channel League Finals(CA), 2015-05-08(#2) |
| B-400 | 536 | 51.85 | Franco, Andrew (2018) (Whitney, CA) | Capital Valley Conference Prelims/Finals(CA), 2015-05-15(#6) |
| B-400 | 540 | 51.86 | Arteaga, Sierra (2015) (Fallbrook, CA) | Escondido Invitational(CA), 2015-05-01(#6) |
| B-400 | 540 | 51.86 | Hill, Rodrick (2017) (Etiwanda, CA) | Baseline League Prelims(CA), 2015-05-04(#7) |
| B-400 | 542 | 51.87 | Alvarez, Marcus (2015) (Junipero Serra, CA) | Notre Dame and Sacred Heart Cathedral at Serra(CA), 2015-04-15(#2) |
| B-400 | 542 | 51.87 | McDonald, Alex (2017) (Stuart Hall, CA) | San Mateo Bearcats Invitational(CA), 2015-04-18(#1) |
| B-400 | 542 | 51.87 | Bui, Tommy (2016) (Valencia, CA) | CIF-SS Division 1 Prelims(CA), 2015-05-16(#32) |
| B-400 | 545 | 51.88 | Ruvalcaba, Oscar (2016) (Fallbrook, CA) | Escondido Invitational(CA), 2015-05-01(#7) |
| B-400 | 545 | 51.88 | Lambert, Leo (2016) (Notre Dame, CA) | Mission League Prelims/Finals(CA), 2015-05-07(#12) |
| B-400 | 547 | 51.89 | Schelly, Chad (2015) (Hemet, CA) | Hemet at San Jacinto (CA), 2015-03-26(#1) |
| B-400 | 548 | 51.90 | Mahaarachchi, Shan (2016) (Agoura, CA) | Agoura at Thousand Oaks(CA), 2015-03-18(#2) |
| B-400 | 548 | 51.90 | Andrade, Omar (2016) (Fullerton, CA) | Orange County Meet of Champions(CA), 2015-04-25(#6) |
| B-400 | 548 | 51.90 | Stanton, Tim (2015) (Carlsbad, CA) | CIF-SDS Prelims(CA), 2015-05-23(#13) |
| B-400 | 551 | 51.91 | Marshall, Damion (2015) (Great Oak, CA) | Vista Murrieta vs Great Oak(CA), 2015-03-19(#3) |
| B-400 | 551 | 51.91 | Elliot, Fong (Miramonte, CA) | Montgomery Viking Track Classic(CA), 2015-04-25(#7) |
| B-400 | 553 | 51.92 | Tyler, Bryce (2016) (Golden Valley, CA) | Pasadena Games(CA), 2015-03-28(#20) |
| B-400 | 553 | 51.92 | Kraft, Braeden (2016) (Del Campo, CA) | Rio Linda Invitational(CA), 2015-03-31(#2) |
| B-400 | 553 | 51.92 | Gonzales, Christian (2016) (Miramonte, CA) | Montgomery Viking Track Classic(CA), 2015-04-25(#8) |
| B-400 | 553 | 51.92 | Deluna, Dylan (2017) (Yucca Valley, CA) | De Anza League Finals(CA), 2015-05-07(#1) |
| B-400 | 553 | 51.92 | Arrington, Steven (2017) (Canyon, CA) | Foothill League Finals(CA), 2015-05-07(#5) |
| B-400 | 558 | 51.93 | Wadsworth, Ben (2018) (San Francisco University, CA) | Leland Quicksilver Classic(CA), 2015-04-04(#1) |
| B-400 | 558 | 51.93 | Whipple, Andrew (2015) (Central Union, CA) | Central at Southwest(CA), 2015-04-30(#2) |
| B-400 | 558 | 51.93 | Fernandez, Adrian (2016) (Rancho Bernardo, CA) | Rancho Bernardo at Torrey Pines(CA), 2015-05-07(#1) |
| B-400 | 558 | 51.93 | Tu, Nicholas (2015) (Mira Mesa, CA) | Eastern League Prelims/Finals(CA), 2015-05-15(#5) |
| B-400 | 562 | 51.94 | Gilmore, Timothy (2015) (Golden Valley, CA) | Redondo Nike Invitational(CA), 2015-03-14(#18) |
| B-400 | 562 | 51.94 | Lewis, Cedric (2015) (Tennyson, CA) | San Leandro Invitational(CA), 2015-03-21(#5) |
| B-400 | 562 | 51.94 | Tank, Aidan (2016) (Elk Grove, CA) | Jesuit and St. Francis at Elk Grove(CA), 2015-03-25(#1) |
| B-400 | 562 | 51.94 | Dowd, Cj (2017) (San Francisco University, CA) | Leland Quicksilver Classic(CA), 2015-04-04(#2) |
| B-400 | 562 | 51.94 | Barry, Alex (2015) (Calabasas, CA) | Ventura County Championships(CA), 2015-05-01(#15) |
| B-400 | 562 | 51.94 | Rogers, David (2015) (Brawley, CA) | CIF-SDS Prelims(CA), 2015-05-23(#11) |
| B-400 | 562 | 51.94 | Jensen, Mason (2016) (Paradise, CA) | EAL/SRL Championships(CA), 2015-05-15(#3) |
| B-400 | 569 | 51.95 | Askins, Jason (2015) (Villa Park, CA) | North Hills League Prelims/Finals(CA), 2015-05-08(#2) |
| B-400 | 570 | 51.96 | Price, Mike (2015) (Valencia, CA) | Don Green Invitational(CA), 2015-03-07(#9) |
| B-400 | 570 | 51.96 | Redd, Donovan (2015) (Head Royce, CA) | Pittsburg Relays(CA), 2015-04-18(#6) |
| B-400 | 570 | 51.96 | Stevens, Ryan (2016) (Ventura, CA) | Buchanan West Coast Relays(CA), 2015-04-18(#5) |
| B-400 | 570 | 51.96 | Figueroa, Matt (2015) (Camarillo, CA) | Coastal Canyon League Prelims(CA), 2015-05-05(#5) |
| B-400 | 574 | 51.97 | Khatib, Zaid Roy (2015) (Gabrielino, CA) | Rosemead Invitational(CA), 2015-03-21(#4) |
| B-400 | 574 | 51.97 | Williams, Andre (2016) (Rosemont, CA) | Union Mine at Rosemont(CA), 2015-04-08(#1) |
| B-400 | 574 | 51.97 | Aragon, Kendrick (2015) (Central Valley -NO, CA) | Anderson at Central Valley(CA), 2015-04-22(#1) |
| B-400 | 574 | 51.97 | Youpele, Michael (2016) (Citrus Hill, CA) | Mountain Pass League Finals(CA), 2015-05-07(#5) |
| B-400 | 574 | 51.97 | Hernandez, Francisco (2016) (Gregori, CA) | CIF-SJS Division I Prelims(CA), 2015-05-20(#23) |
| B-400 | 574 | 51.97 | Garcia, Dominick (2015) (Maria Carrillo, CA) | CIF-NCS Redwood Empire Area Meet(CA), 2015-05-23(#9) |
| B-400 | 580 | 51.98 | Mccloskey, Max (2015) (El Camino, CA) | ASICS Mt. Carmel Invitational(CA), 2015-03-28(#23) |
| B-400 | 580 | 51.98 | Patterson, Kristopher (Redondo Union, CA) | South Bay (LA) Championships(CA), 2015-04-18(#7) |
| B-400 | 580 | 51.98 | Nickell, Tim (Frontier, CA) | CIF-CE South Area Championships(CA), 2015-05-13(#6) |
| B-400 | 580 | 51.98 | Gonzalez, Antar (2016) (Kennedy (Sac) -SJ, CA) | CIF-SJS Division II and III Prelims(CA), 2015-05-20(#14) |
| B-400 | 584 | 51.99 | Kaufman, Sean (2015) (Gilroy, CA) | Watsonville and PArejo Valley at Gilroy(CA), 2015-03-26(#2) |
| B-400 | 584 | 51.99 | Delgado, Joey (2015) (Glendora, CA) | Palomares League Finals(CA), 2015-05-06(#2) |
| B-400 | 584 | 51.99 | Robledo, Jesus (2015) (Turlock, CA) | Central California Championships(CA), 2015-05-09(#5) |
| B-400 | 587 | 52.00 | Terronez, Josiah (2015) (High Tech High, CA) | Calvin Christian Small School Invitational(CA), 2015-03-28(#3) |
| B-400 | 587 | 52.00 | Walder, Max (2016) (Beverly Hills, CA) | Pasadena Games(CA), 2015-03-28(#22) |
| B-400 | 587 | 52.00 | Ramirez, Nikko (2015) (Sunnyside, CA) | North Yosemite League Meet #5(CA), 2015-04-15(#1) |
| B-400 | 587 | 52.00 | Kwon, Peter (2015) (Ventura, CA) | Ventura at Buena(CA), 2015-04-23(#1) |
| B-400 | 587 | 52.00 | Eley, Noah (2015) (Edison, CA) | Orange County Championships(CA), 2015-04-25(#20) |
| B-400 | 587 | 52.00 | Quintanilla, Anthonio (2017) (Point Loma, CA) | Dick Wilkins Frosh-Soph Invitational(CA), 2015-05-02(#1) |
| B-400 | 587 | 52.00 | Airey, Cale (2016) (Laguna Beach, CA) | Orange Coast League Finals(CA), 2015-05-07(#1) |
| B-400 | 587 | 52.00 | Buethe, Thomas (2017) (El Dorado, CA) | Sierra Valley Conference Prelims/Finals(CA), 2015-05-14(#2) |
| B-400 | 595 | 52.01 | Flores, Jonathan (2017) (Santa Fe, CA) | St. Paul Invitational(CA), 2015-03-21(#2) |
| B-400 | 595 | 52.01 | Gonzalez, Andres (2017) (Olympian, CA) | Dick Wilkins Frosh-Soph Invitational(CA), 2015-05-02(#5) |
| B-400 | 595 | 52.01 | Alfaro, Felix (2016) (El Monte, CA) | Mission Valley League Finals(CA), 2015-05-08(#2) |
| B-400 | 598 | 52.02 | Le, Jimmy (2015) (Wilson, CA) | LA County Championships(CA), 2015-04-04(#6) |
| B-400 | 598 | 52.02 | Rollins, Sean (2016) (Santa Rosa, CA) | Santa Rosa Twilight Invitational(CA), 2015-04-11(#3) |
| B-400 | 598 | 52.02 | Short, Elijah (2017) (De La Salle, CA) | Frosh-Soph West Coast Relays(CA), 2015-04-17(#1) |
| B-400 | 598 | 52.02 | Jones, Devery (2015) (Centennial, CA) | Santiago at Centennial, 2015-04-15(#2) |
| B-400 | 598 | 52.02 | Mitchall, Ma'Sai (2015) (Wilson, CA) | Reedley Invitational(CA), 2015-05-01(#10) |
| B-400 | 598 | 52.02 | Rubalcava-Cunan, Che (2015) (Quincy, CA) | CIF-NS Finals(CA), 2015-05-29(#4) |
| B-400 | 604 | 52.03 | Carter, Schezarone (2016) (James Logan, CA) | San Leandro Invitational(CA), 2015-03-21(#6) |
| B-400 | 604 | 52.03 | Jones, Kamil (2017) (Liberty Ranch, CA) | Glenn Poole Invitational(CA), 2015-04-25(#2) |
| B-400 | 604 | 52.03 | Mata, Jesus (2015) (Western, CA) | CIF-SS Division 2 Prelims(CA), 2015-05-16(#30) |
| B-400 | 604 | 52.03 | Saikhon, Tyler (2018) (Southwest -SD, CA) | Central at Southwest(CA), 2015-04-30(#3) |
| B-400 | 604 | 52.03 | Fitzpatrick, Scott (2018) (Junipero Serra, CA) | West Catholic Athletic League Prelims/Finals(CA), 2015-05-15(#2) |
| B-400 | 604 | 52.03 | Allyn, Spencer (2016) (Campbell Hall, CA) | CIF-SS Division 4 Prelims(CA), 2015-05-16(#12) |
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