| Event | Rank | Mark | By | Meet |
| B-400 | 1 | 46.76 | Cachon, Brandon (2016) (Barron Collier, FL) (US#18) | NB Outdoor Nationals(NC), 2015-06-21(#5) |
| B-400 | 2 | 47.51 | Smith, Domnic (2016) (Creekside, FL) (US#50) | USATF World Youth Trials(IL), 2015-07-01(#4) |
| B-400 | 3 | 47.64 | Roach, Markevious (2015) (Blanche Ely, FL) (US#62) | BCAA Championships(FL), 2015-03-21(#2) |
| B-400 | 4 | 47.80 | Crandon, Anthony (2015) (Northeast, FL) (US#79) | FL 3A State Meet(FL), 2015-05-02(#2) |
| B-400 | 5 | 47.88 | Smith Jr, Dominic (2016) (Creekside, FL) (US#93) | FL 3A State Meet(FL), 2015-05-02(#3) |
| B-400 | 6 | 47.89 | Smith, Montray (2016) (Miami Carol City, FL) (US#95) | FL 3A State Meet(FL), 2015-05-02(#4) |
| B-400 | 7 | 48.02 | Bell, Duran (2017) (Hillsborough, FL) | FL 3A State Meet(FL), 2015-05-02(#5) |
| B-400 | 7 | 48.02 | Smith Jr, Dominic M (2016) (Creekside, FL) | Golden South Classic(FL), 2015-05-23(#5) |
| | | National Elites above. State Elites below | | |
| B-400 | 9 | 48.85 | Willis, Paul (2014) (Boyd Anderson, FL) | BCAA Championships(FL), 2015-03-21(#4) |
| B-400 | 10 | 48.96 | Lawson, Jeremy (2016) (Gainesville, FL) | Alachau County Championships(FL), 2015-03-13(#1) |
| B-400 | 10 | 48.96 | Bonner, Corey (2016) (Fort Walton Beach, FL) | FL 3A State Meet(FL), 2015-05-02(#6) |
| B-400 | 12 | 49.17 | Henderson, Steven (2016) (Miami Northwestern, FL) | FL 3A State Meet(FL), 2015-05-02(#7) |
| B-400 | 12 | 49.17 | Toomer, Tiondre (2017) (Miami Northwestern, FL) | USATF Youth National Championships 17-18(IL), 2015-07-05(#5) |
| B-400 | 14 | 49.19 | Brown, Tremaine (2018) (Blanche Ely, FL) | FL 4A Region 3(FL), 2015-04-22(#3) |
| B-400 | 15 | 49.23 | Salazar, Jason (2015) (Northeast, FL) | City of Miramar Invitational(FL), 2015-04-04(#1) |
| B-400 | 16 | 49.57 | Lamb, Camrin (2016) (Miami Northwestern, FL) | FL 3A State Meet(FL), 2015-05-02(#8) |
| B-400 | 17 | 49.59 | Rodgers, Isaiah (2016) (Blake, FL) | FL 3A District 9(FL), 2015-04-15(#2) |
| B-400 | 18 | 49.61 | Miller, Elliot (2015) (Miami Norland, FL) | GMAC Championships(FL), 2015-03-17(#5) |
| B-400 | 19 | 49.73 | Aristilde, Dieuly (2015) (Boynton Beach , FL) | Palm Beach County Championships(FL), 2015-04-01(#2) |
| B-400 | 20 | 49.81 | Willis, Paul (2015) (Boyd Anderson, FL) | Miramar Relays(FL), 2015-03-28(#1) |
| B-400 | 20 | 49.81 | Boswell, Alex (2015) (Niceville, FL) | FL 3A Region 1(FL), 2015-04-23(#3) |
| B-400 | 22 | 49.82 | El-Zein, Kareem (2015) (Doral , FL) | Dade Christian Crusader Classic(FL), 2015-03-14(#1) |
| B-400 | 23 | 49.98 | Germain, Ryan (2017) (Paxon, FL) | FL 2A Region 1(FL), 2015-04-21(#7) |
| B-400 | 24 | 50.02 | Richardson, Wayne (2015) (Vanguard, FL) | FL 3A Region 2(FL), 2015-04-22(#1) |
| B-400 | 25 | 50.03 | Mosley, Brandon (2015) (Dillard, FL) | FL 3A District 15(FL), 2015-04-11(#1) |
| B-400 | 26 | 50.05 | Dorvil, Jonas (2015) (South Broward, FL) | BCAA Championships(FL), 2015-03-21(#5) |
| B-400 | 27 | 50.06 | Manning, Kevoughn (Booker T. Washington, FL) | Steven Garst Invitational(FL), 2015-02-28(#2) |
| B-400 | 27 | 50.06 | Roberts, Bobby (2015) (Lincoln, FL) | AAU JO Region 9 Qualifier - Tallahassee(FL), 2015-06-28(#2) |
| B-400 | 29 | 50.09 | Canady, Braxton (2016) (Paxon, FL) | TFA Royal Open(FL), 2015-02-21(#2) |
| B-400 | 30 | 50.11 | Harvey, Khardan (New Smyrna Beach, FL) | AAU JO Region 9 Qualifier - Tallahassee(FL), 2015-06-28(#1) |
| B-400 | 31 | 50.14 | Uebelacker, Justin (2016) (Charlotte, FL) | FL 3A Region 3(FL), 2015-04-23(#5) |
| B-400 | 32 | 50.17 | Lewis, Darryn (2016) (Dillard, FL) | FL 3A District 15(FL), 2015-04-11(#2) |
| B-400 | 33 | 50.21 | London, David (2015) (Leon, FL) | FL 3A Region 1(FL), 2015-04-23(#3) |
| B-400 | 34 | 50.24 | Nowell, George (2015) (Hillsborough, FL) | FL 3A District 9(FL), 2015-04-15(#3) |
| B-400 | 35 | 50.28 | Belizaire, Jonathan (2016) (Blanche Ely, FL) | FL 4A Region 3(FL), 2015-04-22(#5) |
| B-400 | 36 | 50.36 | Othelot, Chistopher (2016) (Miami Northwestern, FL) | GMAC North Qualifier(FL), 2015-03-12(#3) |
| B-400 | 37 | 50.37 | Laguerre, Lenny (2015) (Boyd Anderson, FL) | Miramar Relays(FL), 2015-03-28(#2) |
| B-400 | 38 | 50.40 | Campbell, D'Eldrick (Leon, FL) | Jimmy Everett Invitational(FL), 2015-03-05(#1) |
| B-400 | 39 | 50.48 | Guzman, Noe (2016) (Naples, FL) | Collier County Athletic Conference(FL), 2015-03-25(#1) |
| B-400 | 40 | 50.57 | Graden, Lannoris (2015) (Miami Carol City, FL) | USATF JO Region 16 Qualifier(FL), 2015-07-12(#8) |
| B-400 | 41 | 50.59 | Jones, Tywon (2016) (Seabreeze, FL) | FL 3A Region 2(FL), 2015-04-22(#4) |
| B-400 | 42 | 50.62 | Reynolds, Mekhi (2017) (Armwood, FL) | FL 3A District 9(FL), 2015-04-15(#4) |
| B-400 | 42 | 50.62 | Newton, Jacob (2016) (Jesuit, FL) | FL 2A Region 3(FL), 2015-04-23(#2) |
| B-400 | 42 | 50.62 | parker, charlie (2016) (Miami Northwestern, FL) | USATF JO Region 16 Qualifier(FL), 2015-07-12(#9) |
| B-400 | 45 | 50.65 | Springer, Alijah (2015) (Milton, FL) | FL 3A District 1(FL), 2015-04-15(#2) |
| B-400 | 46 | 50.71 | Forges, Devin (2015) (Barron Collier, FL) | FL 3A District 12(FL), 2015-04-11(#2) |
| B-400 | 46 | 50.71 | Fredrickson, Devin (2017) (Creekside, FL) | FL 3A Region 1(FL), 2015-04-23(#8) |
| B-400 | 48 | 50.73 | Hooker, Desha (2015) (Miami Central, FL) | FL 3A District 16(FL), 2015-04-14(#7) |
| B-400 | 49 | 50.75 | Montgomery, Noah (2015) (Venice, FL) | Sarasota County Championships(FL), 2015-04-02(#1) |
| B-400 | 50 | 50.79 | Bonner, Corey (18) (Fort Walton Beach, FL) | Seahawks Open(FL), 2015-02-14(#1) |
| B-400 | 51 | 50.81 | Bond, Dmonte (2016) (Crestview, FL) | FL 3A Region 1(FL), 2015-04-23(#9) |
| B-400 | 52 | 50.83 | Moxey, Adrian (2016) (Barron Collier, FL) | FL 3A District 12(FL), 2015-04-11(#3) |
| B-400 | 52 | 50.83 | Hill, Sequion (2016) (Boyd Anderson, FL) | FL 3A District 15(FL), 2015-04-11(#4) |
| B-400 | 54 | 50.90 | Mcafee, Ceaph (2016) (Lehigh, FL) | FL 3A District 11(FL), 2015-04-14(#2) |
| B-400 | 55 | 50.95 | Perkins, Taylor (2015) (Booker T. Washington, FL) | FSU Relays - Friday(FL), 2015-03-26(#7) |
| B-400 | 56 | 51.07 | Cantey, Avery (2015) (Pace, FL) | Louie Bing Classic(FL), 2015-02-21(#10) |
| B-400 | 57 | 51.08 | Allen, Byron (2018) (Lennard, FL) | FL 3A District 9(FL), 2015-04-15(#6) |
| B-400 | 58 | 51.15 | Perkins, Antravius (2017) (South Fort Myers, FL) | FL 3A District 11(FL), 2015-04-14(#2) |
| B-400 | 59 | 51.22 | Martin, Joseph (2016) (Dwyer, FL) | FL 4A Region 3(FL), 2015-04-22(#9) |
| B-400 | 60 | 51.23 | Mitchell, Kevin (Palm Beach Lakes, FL) | Royal Palm Beach Invitational 2(FL), 2015-04-09(#4) |
| B-400 | 61 | 51.24 | Gibson, Devonte (2015) (Boynton Beach , FL) | Suncoast Invitational(FL), 2015-02-24(#2) |
| B-400 | 62 | 51.27 | Pete, Christian (2016) (South Broward, FL) | Golden South Classic(FL), 2015-05-23(#7) |
| B-400 | 63 | 51.30 | Mcnair, Kristinn (2015) (Pembroke Pines Charter, FL) | FL 3A District 15(FL), 2015-04-11(#6) |
| B-400 | 64 | 51.33 | Flesher, Nate (2016) (Fort Myers, FL) | FL 3A District 11(FL), 2015-04-14(#6) |
| B-400 | 65 | 51.37 | Walker, Dequan (Dwyer, FL) | Palm Beach County Championships(FL), 2015-04-01(#6) |
| B-400 | 66 | 51.39 | Grey, Devoy (2016) (Northeast, FL) | Southridge Spartan Invitational(FL), 2015-02-28(#14) |
| B-400 | 66 | 51.39 | Freeman, Cedrick (2016) (Miami Central, FL) | FL 3A District 16(FL), 2015-04-14(#9) |
| B-400 | 68 | 51.43 | Aulenbach, Cory (2015) (Bartram Trail, FL) | St. John's River County Championships(FL), 2015-04-01(#3) |
| B-400 | 68 | 51.43 | Yarde, Ryan (2016) (Liberty, FL) | FL 3A District 6(FL), 2015-04-16(#2) |
| B-400 | 70 | 51.44 | Warrick, Deanthony (2015) (Palmetto, FL) | Steinbrenner Invitational(FL), 2015-03-21(#11) |
| B-400 | 70 | 51.44 | Kanyinda, Tumba (2015) (Land O' Lakes, FL) | FL 3A Region 2(FL), 2015-04-22(#5) |
| B-400 | 72 | 51.47 | Brown, Josh (Booker T. Washington, FL) | Aggie Invitational(FL), 2015-03-14(#3) |
| B-400 | 73 | 51.52 | Rain, Griffin (2016) (Jesuit, FL) | Jesuit Tri Meet 2(FL), 2015-02-24(#1) |
| B-400 | 73 | 51.52 | Sylvester, Latavies (2018) (Mainland, FL) | FL 3A Region 2(FL), 2015-04-22(#7) |
| B-400 | 75 | 51.53 | Defense, Hasan (2015) (Ed White, FL) | FL 3A District 3(FL), 2015-04-14(#3) |
| B-400 | 76 | 51.55 | Napier, Connie (2016) (Pembroke Pines Charter, FL) | Miramar Relays(FL), 2015-03-28(#7) |
| B-400 | 76 | 51.55 | Peter, Justin (2017) (Leon, FL) | USATF JO Region 16 Qualifier(FL), 2015-07-12(#7) |
| B-400 | 78 | 51.57 | Hughes, Jon (2015) (Hillsborough, FL) | Jesuit Tri Meet 2(FL), 2015-02-24(#2) |
| B-400 | 79 | 51.59 | Forbes, Leander (2017) (Leon, FL) | FSU Relays - Friday(FL), 2015-03-26(#13) |
| B-400 | 80 | 51.61 | Hancock, Malik (2016) (Edgewater, FL) | Brian Jaeger Elite Classic(FL), 2015-03-14(#10) |
| B-400 | 80 | 51.61 | Jean, Josias (2017) (Fort Myers, FL) | AAU JO Region 9 Qualifier - Naples(FL), 2015-06-28(#6) |
| B-400 | 82 | 51.62 | Melendez, William (2015) (Bartram Trail, FL) | FL 3A District 4(FL), 2015-04-14(#6) |
| B-400 | 83 | 51.63 | Barnes, Abraham (2015) (Chiles, FL) | Golden South Classic(FL), 2015-05-23(#2) |
| B-400 | 84 | 51.64 | Wampler, Maxwell (2016) (Gulf Coast, FL) | FL 3A District 12(FL), 2015-04-11(#4) |
| B-400 | 85 | 51.66 | Jacques-Louis, Shy (2018) (Lehigh, FL) | Lee County Athletic Association(FL), 2015-03-21(#1) |
| B-400 | 86 | 51.71 | Adams, Qeandre (Booker T. Washington, FL) | Steven Garst Invitational(FL), 2015-02-28(#4) |
| B-400 | 87 | 51.78 | Wallace, Rayshard (Blanche Ely, FL) | Bill Wilson Invitational(FL), 2015-03-14(#4) |
| B-400 | 87 | 51.78 | Reid, Donovan (2016) (Englewood, FL) | FL 3A District 3(FL), 2015-04-14(#4) |
| B-400 | 89 | 51.79 | Ballash, Brad (2015) (Seabreeze, FL) | FL 3A Region 2(FL), 2015-04-22(#6) |
| B-400 | 90 | 51.80 | Fejes, Jeffery (2017) (Venice, FL) | FL 3A District 10(FL), 2015-04-15(#2) |
| B-400 | 90 | 51.80 | Williams, Holly (2017) (Lincoln, FL) | FL 3A District 3(FL), 2015-04-14(#5) |
| B-400 | 92 | 51.82 | Fearrington, Kyle (2016) (East Lake, FL) | Pinellas County Athletic Conference (FL), 2015-03-26(#3) |
| B-400 | 93 | 51.86 | Mclean, Mark-Anthony (2016) (Miami Carol City, FL) | FL 3A District 16(FL), 2015-04-14(#11) |
| B-400 | 94 | 51.90 | Ware, David (2015) (Dillard, FL) | BCAA South Qualifier(Fl), 2015-03-18(#7) |
| B-400 | 94 | 51.90 | Baclig, Jeremiah (2018) (Paxon, FL) | Wolfpack Classic(FL), 2015-03-27(#2) |
| B-400 | 94 | 51.90 | Tillman, Randy (2015) (Creekside, FL) | Craig Speziale Sprint/Hurdle/Field Event(FL), 2015-04-03(#1) |
| B-400 | 97 | 51.91 | Weaver, Julius (2016) (Miami Northwestern, FL) | Hallandale Invitational(FL), 2015-03-07(#17) |
| B-400 | 98 | 51.95 | Mckinney, Davis (2015) (Fort Walton Beach, FL) | Steven Garst Invitational(FL), 2015-02-28(#7) |
| B-400 | 98 | 51.95 | Williams, Bernard (2016) (Edgewater, FL) | FL 3A District 6(FL), 2015-04-16(#3) |
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| | | See more performances for B-400 | | |
