| Event | Rank | Mark | By | Meet |
| B-300 | 1 | 34.89 | Okoro, Simeon (2015) (Weston, CT) (US#29) | CT Indoor State Meet(CT), 2015-02-21(#1) |
| B-300 | 2 | 34.90 | Doyley, Mark (2017) (Weaver, CT) (US#30) | SCC Coaches Invitational(CT), 2015-01-25(#1) |
| B-300 | 3 | 35.15 | Smith, Akiel (2015) (Hillhouse, CT) (US#44) | Yale HS Track Classic(CT), 2015-01-17(#1) |
| B-300 | 4 | 35.49 | Swain, Tyreise (2017) (Hillhouse, CT) (US#89) | CT Class M Indoor State Meet(CT), 2015-02-14(#2) |
| B-300 | 5 | 35.60 | Young, Elijah (2016) (Wethersfield, CT) | CT Indoor State Meet(CT), 2015-02-21(#3) |
| B-300 | 6 | 35.67 | Rush, Courtney (2015) (Windsor, CT) | CT Class L Indoor State Meet(CT), 2015-02-13(#1) |
| B-300 | 7 | 35.98 | Mack, Chris (2015) (Windsor, CT) | SCC Coaches Invitational(CT), 2015-01-25(#4) |
| | | National Elites above. State Elites below | | |
| B-300 | 8 | 36.09 | Swain Jr., Tyreise (2017) (Hillhouse, CT) | SCC Boys Developmental #2(CT), 2015-01-07(#1) |
| B-300 | 9 | 36.16 | Williams, Nathaniel (2015) (Windsor, CT) | SCC Coaches Invitational(CT), 2015-01-25(#5) |
| B-300 | 10 | 36.26 | Freeman, Ronnie (2015) (Hyde Leadership, CT) | CT Indoor State Meet(CT), 2015-02-21(#5) |
| B-300 | 11 | 36.27 | Clarke, Devonte (2016) (Danbury, CT) | Yale HS Track Classic(CT), 2015-01-17(#6) |
| B-300 | 12 | 36.35 | Keating, Johnathan (2015) (Ridgefield, CT) | FCIAC Indoor Championships(CT), 2015-02-05(#1) |
| B-300 | 13 | 36.41 | Linehan, Daniel (2016) (Brien Mcmahon, CT) | CT Class LL Indoor State Meet(CT), 2015-02-16(#2) |
| B-300 | 14 | 36.50 | Wise, Darius (2016) (Hillhouse, CT) | Yale HS Track Classic(CT), 2015-01-17(#8) |
| B-300 | 14 | 36.50 | Keating, Jack (Ridgefield, CT) | Molloy Stanner Games(NY), 2015-01-17(#20) |
| B-300 | 16 | 36.51 | Andrew, Matthew (2015) (Danbury, CT) | Yale HS Track Classic(CT), 2015-01-17(#9) |
| B-300 | 17 | 36.52 | Brown, Alex (2015) (Rocky Hill, CT) | Yale HS Track Classic(CT), 2015-01-17(#10) |
| B-300 | 17 | 36.52 | Petridis, Niko (2016) (Brien Mcmahon, CT) | North Shore Invitational(NY), 2014-12-26(#9) |
| B-300 | 19 | 36.74 | Prue, Matt (2015) (Stonington, CT) | CT Class S Indoor State Meet(CT), 2015-02-12(#3) |
| B-300 | 20 | 36.75 | Petty, Chris (15) (Weston, CT) | SWC Indoor Championships(CT), 2015-02-07(#2) |
| B-300 | 21 | 36.76 | Tomcho, Alex (2015) (Hartford Magnet, CT) | CT Indoor State Meet(CT), 2015-02-21(#10) |
| B-300 | 22 | 36.82 | Camacho, Tayquan (2015) (Norwalk, CT) | CT Class LL Indoor State Meet(CT), 2015-02-16(#3) |
| B-300 | 23 | 36.99 | Rawlings, James (2015) (Brookfield, CT) | SWC Indoor Championships(CT), 2015-02-07(#3) |
| B-300 | 24 | 37.05 | Mohseni, Aria (2016) (Amity Regional, CT) | Yale HS Track Classic(CT), 2015-01-17(#13) |
| B-300 | 25 | 37.07 | Mackay-Morgan, Christian (16) (Northwest Catholic, CT) | Yale HS Track Classic(CT), 2015-01-17(#14) |
| B-300 | 26 | 37.09 | Vital, Andris (2015) (Norwich Free Academy, CT) | CT Class LL Indoor State Meet(CT), 2015-02-16(#4) |
| B-300 | 27 | 37.10 | Petridis, Nicholas (2016) (Brien Mcmahon, CT) | CT Class LL Indoor State Meet(CT), 2015-02-16(#5) |
| B-300 | 28 | 37.15 | Bartley, Jonathan (2016) (Danbury, CT) | Yale HS Track Classic(CT), 2015-01-17(#15) |
| B-300 | 29 | 37.18 | Bonner, Kyshawn (2016) (Windsor, CT) | Yale HS Track Classic(CT), 2015-01-17(#16) |
| B-300 | 30 | 37.19 | Maddox, Corey (2015) (Hillhouse, CT) | Yale HS Track Classic(CT), 2015-01-17(#17) |
| B-300 | 31 | 37.21 | Griffith, Mike (2016) (East Haven, CT) | Yale HS Track Classic(CT), 2015-01-17(#19) |
| B-300 | 32 | 37.23 | Kocurek, Wesley (2015) (Shelton, CT) | Yale HS Track Classic(CT), 2015-01-17(#20) |
| B-300 | 33 | 37.25 | Zirn, Micah (15) (Weston, CT) | SWC Indoor Championships(CT), 2015-02-07(#4) |
| B-300 | 34 | 37.27 | Stewartson, Brendon (2016) (Hillhouse, CT) | SCC Boys Developmental #2(CT), 2015-01-07(#4) |
| B-300 | 35 | 37.31 | Robinson, Denzel (2015) (Staples, CT) | Yale HS Track Classic(CT), 2015-01-17(#21) |
| B-300 | 35 | 37.31 | Lee, Drew (2015) (Bristol Central, CT) | CCC Indoor Championships(CT), 2015-01-31(#5) |
| B-300 | 37 | 37.32 | Abreu, Leonardo (2016) (Danbury, CT) | Yale HS Track Classic(CT), 2015-01-17(#22) |
| B-300 | 37 | 37.32 | Houle, Shawn (15) (Middletown, CT) | CT Class L Indoor State Meet(CT), 2015-02-13(#4) |
| B-300 | 39 | 37.36 | Gleen, Tyler (2017) (Trumbull, CT) | North Shore Invitational(NY), 2014-12-26(#19) |
| B-300 | 39 | 37.36 | Fraser, Austin (2015) (Seymour, CT) | Rhody Classic(RI), 2015-01-10(#2) |
| B-300 | 41 | 37.38 | Conaway, D'andre (2015) (Bristol Central, CT) | CCC Indoor Championships(CT), 2015-01-31(#6) |
| B-300 | 42 | 37.44 | Strand, Thomas (2015) (Old Saybrook, CT) | CT Class S Indoor State Meet(CT), 2015-02-12(#5) |
| B-300 | 43 | 37.46 | Marcoux, Devon (2015) (Windham, CT) | ECC Small School Indoor Championship(CT), 2015-02-07(#2) |
| B-300 | 44 | 37.52 | Perry, Raylon (2016) (Windsor, CT) | CT Class L Indoor State Meet(CT), 2015-02-13(#5) |
| B-300 | 45 | 37.54 | Johnson, Brad (15) (E.O. Smith, CT) | CCC Indoor Championships(CT), 2015-01-31(#8) |
| B-300 | 46 | 37.57 | Nabors, Will (2015) (Hamden, CT) | Boston Holiday Challenge(MA), 2014-12-27(#7) |
| B-300 | 46 | 37.57 | Medina, Luis (2017) (Bristol Central, CT) | CCC Indoor Championships(CT), 2015-01-31(#9) |
| B-300 | 46 | 37.57 | Johnson, Bradley (2015) (E.O. Smith, CT) | CT Class M Indoor State Meet(CT), 2015-02-14(#7) |
| B-300 | 49 | 37.59 | Footman, Gene (16) (Middletown, CT) | CCC Indoor Championships(CT), 2015-01-31(#10) |
| B-300 | 50 | 37.64 | Asson, Denzel (2015) (West Haven, CT) | CT Class LL Indoor State Meet(CT), 2015-02-16(#8) |
| B-300 | 51 | 37.65 | Levitt, Pat (2015) (Manchester, CT) | Yale HS Track Classic(CT), 2015-01-17(#26) |
| B-300 | 52 | 37.66 | MacKay-M, Christian (2016) (Northwest Catholic, CT) | Rhode Island Classic(RI), 2014-12-27(#9) |
| B-300 | 53 | 37.68 | Lecomer, Tyler (2015) (Bunnell, CT) | SWC Indoor Championships(CT), 2015-02-07(#5) |
| B-300 | 54 | 37.71 | Gomez-Duplessis, Jordon (2015) (Danbury, CT) | Yale HS Track Classic(CT), 2015-01-17(#28) |
| B-300 | 55 | 37.76 | Nabors, William (15) (Hamden, CT) | SCC Indoor Championships(CT), 2015-02-06(#5) |
| B-300 | 56 | 37.83 | Quiroga, Paul (2015) (Greenwich, CT) | Yale HS Track Classic(CT), 2015-01-17(#29) |
| B-300 | 57 | 37.85 | Lopes, Michael (15) (Ledyard, CT) | ECC Large School Indoor Championship(CT), 2015-02-07(#1) |
| B-300 | 58 | 37.87 | Gebril, Omar (2017) (North Haven, CT) | CT Class L Indoor State Meet(CT), 2015-02-13(#7) |
| B-300 | 59 | 37.89 | Echevarria, Juan (2016) (Greater Hartford Classical Magnet, CT) | CT Class S Indoor State Meet(CT), 2015-02-12(#8) |
| B-300 | 60 | 37.92 | Stegman, Troy (2016) (Wethersfield, CT) | Yale HS Track Classic(CT), 2015-01-17(#30) |
| B-300 | 61 | 37.94 | Salati, Dario (16) (Notre Dame , CT) | CT Class L Indoor State Meet(CT), 2015-02-13(#8) |
| B-300 | 62 | 37.95 | Walker, Evan (2015) (Hamden, CT) | SCC Boys Developmental #2(CT), 2015-01-07(#7) |
| B-300 | 63 | 37.97 | Williams, Carl (15) (Branford, CT) | SCC Boys Developmental #2(CT), 2015-01-07(#8) |
| B-300 | 64 | 37.98 | Hollis, Riley (2015) (Canton, CT) | Yale HS Track Classic(CT), 2015-01-17(#31) |
| B-300 | 65 | 37.99 | Wunsch, John (2015) (Immaculate, CT) | CT Class S Indoor State Meet(CT), 2015-02-12(#9) |
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| | | See more performances for B-300 | | |
