| Event | Rank | Mark | By | Meet |
| B-400 | 1 | 47.92 | Lewis, John (2015) (Cheltenham, PA) (US#100) | SOL American Conference Championship(PA), 2015-05-09(#1) |
| | | National Elites above. State Elites below | | |
| B-400 | 2 | 48.33 | St. Louis, Donovan (2015) (Upper Darby, PA) | PA 3A State Meet(PA), 2015-05-23(#1) |
| B-400 | 3 | 48.39 | Snyder, Andrew (2016) (Camp Hill, PA) | PA 2A State Meet(PA), 2015-05-23(#1) |
| B-400 | 4 | 48.70 | Bowman Jr., Charles (2015) (Central Dauphin, PA) | Jack Roddick Invitational(PA), 2015-04-18(#1) |
| B-400 | 5 | 48.77 | Isbell, Dequay (2015) (Washington, PA) | PA 2A District 7(PA), 2015-05-14(#1) |
| B-400 | 6 | 48.78 | Hughey, Peter (2015) (James Buchanan, PA) | Mid Penn Championships(PA), 2015-05-09(#1) |
| B-400 | 7 | 48.82 | Richard, Ray (2017) (Wyoming Valley West, PA) | PA 3A State Meet(PA), 2015-05-23(#2) |
| B-400 | 8 | 49.00 | Manning, Ahmir (2016) (Milton Hershey, PA) | Mid Penn Championships(PA), 2015-05-09(#2) |
| B-400 | 9 | 49.01 | Zimmerman, Brian (2016) (Mifflinburg Area, PA) | PA 3A State Meet(PA), 2015-05-23(#1) |
| B-400 | 10 | 49.12 | Rodriguez, Jeronim (2015) (Lebanon, PA) | PA 3A State Meet(PA), 2015-05-23(#2) |
| B-400 | 11 | 49.18 | Smith, Isiah (2016) (Abington, PA) | Nike Henderson Invitational(PA), 2015-05-01(#1) |
| B-400 | 12 | 49.22 | McLemore, Josh (2016) (Downingtown West, PA) | Nike Henderson Invitational(PA), 2015-05-01(#2) |
| B-400 | 13 | 49.23 | Mcintyre, Javon (2016) (Garden Spot, PA) | PA 3A State Meet(PA), 2015-05-23(#3) |
| B-400 | 14 | 49.28 | Green, Miles (2018) (Saint Joseph, PA) | AAU JO Region 2 Qualifier(NJ), 2015-06-28(#2) |
| B-400 | 15 | 49.30 | Chisena, Dan (2015) (Downingtown East, PA) | Nike Henderson Invitational(PA), 2015-05-01(#3) |
| B-400 | 16 | 49.41 | Dillon, Andrew (2015) (Norristown Area, PA) | SOL American Conference Championship(PA), 2015-05-09(#2) |
| B-400 | 16 | 49.41 | Baurle, Kenny (2016) (Avonworth, PA) | PA 2A District 7(PA), 2015-05-14(#2) |
| B-400 | 16 | 49.41 | Harpel, Ian (2016) (Warwick, PA) | Lancaster-Lebanon Conference Championships(PA), 2015-05-09(#1) |
| B-400 | 19 | 49.47 | Seck, Ndiaja (2016) (Penn Wood, PA) | Jack Armstrong Invitational(PA), 2015-04-17(#1) |
| B-400 | 20 | 49.57 | Bellhy, Nate (Fort Cherry, PA) | Anthony Wilson Invitational(OH), 2015-05-02(#1) |
| B-400 | 21 | 49.60 | Cwiklinski, Thaddeus (2015) (York, PA) | White Rose Invitational(PA), 2015-05-02(#2) |
| B-400 | 21 | 49.60 | Kidd-Jackson, Da'Vion (2018) (St. Joseph's Prep, PA) | PA 3A State Meet(PA), 2015-05-23(#2) |
| B-400 | 23 | 49.62 | Powers, Daniel (Unionville, PA) | Nike Henderson Invitational(PA), 2015-05-01(#4) |
| B-400 | 24 | 49.64 | Marrington, David (2015) (Neshaminy, PA) | SOL National Conference Championship(PA), 2015-05-09(#2) |
| B-400 | 25 | 49.66 | Lathon, Darnell (2016) (Hempfield, PA) | Lancaster-Lebanon Conference Championships(PA), 2015-05-09(#3) |
| B-400 | 26 | 49.67 | Lee, Desean (2015) (Academy Park, PA) | Boys Delco Championships(PA), 2015-05-02(#2) |
| B-400 | 27 | 49.74 | Jacobs, Dontay (2015) (Laurel Highlands, PA) | WPIAL AAA South Sectional Qualifier(PA), 2015-05-07(#1) |
| B-400 | 28 | 49.76 | Woods, Noah (2017) (State College Area, PA) | West Central Coaches AAA Invitational(PA), 2015-05-01(#1) |
| B-400 | 29 | 49.78 | Allyne, Nate (2017) (Downingtown West, PA) | Nike Henderson Invitational(PA), 2015-05-01(#5) |
| B-400 | 30 | 49.81 | Jones, Jordan (2015) (Roman Catholic, PA) | Philadelphia Catholic League Championships(PA), 2015-05-09(#1) |
| B-400 | 31 | 49.84 | Wells, Charlie (2015) (Penn Wood, PA) | TFCA of GP Spring Invitational(PA), 2015-04-11(#1) |
| B-400 | 32 | 49.88 | Arp, Aaron (2017) (Central Dauphin East, PA) | Jack Roddick Invitational(PA), 2015-04-18(#3) |
| B-400 | 33 | 49.91 | Craig, Jahmair (2016) (Delaware Valley Charter, PA) | TFCA of GP Spring Invitational(PA), 2015-04-11(#2) |
| B-400 | 33 | 49.91 | Frisina, Dominic (Cathedral Prep, PA) | Baldwin Invitational(PA), 2015-05-01(#1) |
| B-400 | 33 | 49.91 | Pope, Sam (2015) (Episcopal Academy, PA) | Boys Delco Championships(PA), 2015-05-02(#2) |
| B-400 | 36 | 49.95 | Fogle, Nate (2016) (Pocono Mountain West, PA) | PA 3A State Meet(PA), 2015-05-23(#4) |
| B-400 | 37 | 49.99 | Baah, Lance (2016) (Ridley, PA) | Boys Delco Championships(PA), 2015-05-02(#3) |
| B-400 | 38 | 50.00 | Watson, Dante (North Penn, PA) | SOL Continental Conference Championship(PA), 2015-05-09(#1) |
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| | | See more performances for B-400 | | |
