| Event | Rank | Mark | By | Meet |
| B-300H | 1 | 37.66 | Walker, Vernon (2015) (Dr. Phillips, FL) (US#65) | FL 4A Region 1(FL), 2015-04-23(#1) |
| B-300H | 2 | 38.04 | Williams, Annile (2015) (Olympia, FL) | FL 4A Region 1(FL), 2015-04-23(#2) |
| B-300H | 3 | 38.06 | Thyme, Tyreek (2017) (Lyman, FL) | FL 4A Region 1(FL), 2015-04-23(#3) |
| B-300H | 4 | 38.25 | Brandenberg, Wesley (2015) (F. W. Buchholz, FL) | FL 4A Region 1(FL), 2015-04-23(#5) |
| | | National Elites above. State Elites below | | |
| B-300H | 5 | 38.49 | Rose, Gavin (2015) (Winter Park, FL) | FL 4A District 4(FL), 2015-04-16(#2) |
| B-300H | 6 | 39.24 | Howard, Naquan (2015) (F. W. Buchholz, FL) | FL 4A Region 1(FL), 2015-04-23(#7) |
| B-300H | 7 | 39.32 | Hancock, Zach (2015) (West Orange, FL) | Metro Conference Championships(FL), 2015-03-19(#2) |
| B-300H | 8 | 39.41 | Swain, Derrick (2016) (Seminole, FL) | FL 4A District 2(FL), 2015-04-15(#3) |
| B-300H | 9 | 39.44 | Coleman, Daquan (2017) (Lake Brantley, FL) | FL 4A District 2(FL), 2015-04-15(#4) |
| B-300H | 10 | 39.55 | Edwards, Naki (2015) (Wekiva, FL) | FL 4A District 2(FL), 2015-04-15(#5) |
| B-300H | 11 | 39.61 | Fountain, Ronnie (2015) (Winter Park, FL) | FL 4A Region 1(FL), 2015-04-23(#8) |
| B-300H | 12 | 40.21 | Jean Baptiste, Dov (2016) (Apopka, FL) | Steinbrenner Invitational(FL), 2015-03-21(#9) |
| B-300H | 13 | 40.25 | Lopez, Hamilton (2015) (Timber Creek, FL) | FL 4A District 4(FL), 2015-04-16(#4) |
| B-300H | 14 | 40.27 | Khan, Imtiaz (2015) (Olympia, FL) | FL 4A District 3(FL), 2015-04-16(#3) |
| B-300H | 15 | 40.28 | Hernandez, Sebastian (2015) (Timber Creek, FL) | Metro Conference Championships(FL), 2015-03-19(#3) |
| B-300H | 16 | 40.32 | Chambers, Montray (East Ridge, FL) | FL 4A District 3(FL), 2015-04-16(#4) |
| B-300H | 17 | 40.36 | Francois, Sylvester (2015) (Apopka, FL) | Metro Conference Championships(FL), 2015-03-19(#5) |
| B-300H | 18 | 40.43 | Ituralde, Earl (2015) (Oakleaf, FL) | Friday Knight Invite(FL), 2015-03-13(#2) |
| B-300H | 19 | 40.49 | Henry, Michael (2015) (Lake Mary, FL) | Seminole Athletic Conference Championships(FL), 2015-03-12(#2) |
| B-300H | 20 | 40.66 | Payne, Corinthians (2017) (Apopka, FL) | Steinbrenner Invitational(FL), 2015-03-21(#10) |
| B-300H | 21 | 40.70 | Mcmillion, Tremell (2015) (Spruce Creek, FL) | FL 4A District 2(FL), 2015-04-15(#7) |
| B-300H | 22 | 40.76 | Jean Baptiste, Dovaldy (2016) (Apopka, FL) | Osceola Kowboy Invitational(FL), 2015-03-14(#1) |
| B-300H | 23 | 40.85 | Brown, Fertanzy (2015) (Mandarin, FL) | Bob Hayes Classic(FL), 2015-03-21(#7) |
| B-300H | 24 | 40.88 | Peralta, Joshua (2016) (Lake Mary, FL) | Lake Brantley Open(FL), 2015-02-21(#1) |
| B-300H | 25 | 41.00 | Wimberly, Julian (Seminole, FL) | Seminole Athletic Conference Championships(FL), 2015-03-12(#4) |
| B-300H | 26 | 41.18 | English, Charles (2015) (Lake Howell, FL) | Trinity Prep Developmental 1(FL), 2015-03-03(#3) |
| B-300H | 27 | 41.22 | Scott, Calvin (2016) (Lake Nona, FL) | FL 3A Region 2(FL), 2015-04-22(#5) |
| B-300H | 28 | 41.44 | Jordan, Donovan (2015) (Fleming Island, FL) | St. John's River County Championships(FL), 2015-04-01(#2) |
| B-300H | 29 | 41.67 | Nduse-Udom, Jason (2017) (East Ridge, FL) | Royal Invitational(FL), 2015-03-20(#6) |
| B-300H | 30 | 41.74 | Benavidez, Siaz (2017) (Oakleaf, FL) | FL 3A District 4(FL), 2015-04-14(#3) |
| B-300H | 31 | 41.77 | Salinger, Antonio (2017) (Hagerty, FL) | FL 4A District 2(FL), 2015-04-15(#9) |
| B-300H | 32 | 42.17 | Pierre, Larry (2016) (Dr. Phillips, FL) | Seminole Elite Invitational(FL), 2015-03-28(#9) |
| B-300H | 33 | 42.22 | Murry-Opal, Jacob (2016) (Oviedo, FL) | FL 4A District 2(FL), 2015-04-15(#10) |
| B-300H | 33 | 42.22 | Lopez, Victor (2015) (Timber Creek, FL) | Lake Brantley Classic(FL), 2015-03-07(#9) |
| B-300H | 35 | 42.34 | Tukes, Dimaggio (2015) (Lake Nona, FL) | FL 3A District 6(FL), 2015-04-16(#4) |
| B-300H | 36 | 42.43 | Etkins, Joshua (2015) (Mandarin, FL) | FL 4A District 1(FL), 2015-04-11(#6) |
| B-300H | 37 | 42.47 | Nkuitabong, Alexan (2017) (Dr. Phillips, FL) | FL 4A District 4(FL), 2015-04-16(#5) |
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| | | See more performances for B-300H | | |
