| Event | Rank | Mark | By | Meet |
| B-400 | 1 | 48.81 | Lewis, John (2015) (Cheltenham, PA) (US#26) | Hispanic Games(NY), 2015-01-10(#4) |
| B-400 | 2 | 49.28 | Snorweah, Charles (2015) (Pennsbury, PA) (US#54) | Hispanic Games(NY), 2015-01-10(#6) |
| B-400 | 3 | 49.60 | Whitmore, Tyler (2015) (Upper Moreland, PA) (US#74) | PFTCA Indoor State Championships(PA), 2015-03-01(#2) |
| B-400 | 4 | 49.64 | Small, Hunter (2015) (Garnet Valley, PA) (US#77) | Armory Youth Championships(NY), 2015-02-16(#3) |
| B-400 | 5 | 49.73 | Smith, Isiah (2016) (Abington, PA) (US#88) | PFTCA Indoor State Championships(PA), 2015-03-01(#3) |
| B-400 | 6 | 49.76 | Dillon, Andrew (2015) (Norristown Area, PA) (US#93) | PFTCA Indoor State Championships(PA), 2015-03-01(#4) |
| B-400 | 7 | 49.95 | St. Louis, Donovan (2015) (Upper Darby, PA) | PFTCA Indoor State Championships(PA), 2015-03-01(#5) |
| B-400 | 8 | 50.22 | Conway, Sean (2016) (Neshaminy, PA) | PFTCA Indoor State Championships(PA), 2015-03-01(#6) |
| B-400 | 9 | 50.32 | Fratanduono, Anthony (2015) (Archbishop Ryan, PA) | PFTCA Indoor State Championships(PA), 2015-03-01(#7) |
| | | National Elites above. State Elites below | | |
| B-400 | 10 | 50.35 | Meyers, Zachary (2016) (Hempfield Area, PA) | PFTCA Indoor State Championships(PA), 2015-03-01(#8) |
| B-400 | 11 | 50.50 | Cortese, Brian (2015) (Unionville, PA) | PFTCA Indoor State Championships(PA), 2015-03-01(#9) |
| B-400 | 12 | 50.53 | Jones, Jordan (2015) (Roman Catholic, PA) | PFTCA Indoor State Championships(PA), 2015-03-01(#10) |
| B-400 | 13 | 50.73 | McLemore, Josh (2016) (Downingtown West, PA) | PFTCA Indoor State Championships(PA), 2015-03-01(#11) |
| B-400 | 13 | 50.73 | Seck, Ndiaja (2016) (Penn Wood, PA) | TFCA of GP Last Chance Meet(PA), 2015-02-13(#2) |
| B-400 | 15 | 50.77 | Shober, Matt (2015) (Central Bucks South, PA) | PFTCA Indoor State Championships(PA), 2015-03-01(#12) |
| B-400 | 16 | 50.84 | Green, Miles (2018) (Saint Joseph, PA) | New Balance Indoor Nationals - Freshman(NY), 2015-03-15(#1) |
| B-400 | 17 | 50.87 | Colon, Heriberto (2016) (Wyomissing Area, PA) | PFTCA Indoor State Championships(PA), 2015-03-01(#13) |
| B-400 | 18 | 51.01 | Everidge, Luke (2017) (Central Dauphin East, PA) | PFTCA Indoor State Championships(PA), 2015-03-01(#14) |
| B-400 | 19 | 51.03 | Moscoe, Justin (2016) (Haverford, PA) | PFTCA Indoor State Championships(PA), 2015-03-01(#15) |
| B-400 | 20 | 51.07 | Howell, Austin (2017) (Pennridge, PA) | PFTCA Indoor State Championships(PA), 2015-03-01(#16) |
| B-400 | 21 | 51.17 | Zimmerman, Brian (2016) (Mifflinburg Area, PA) | PFTCA Indoor State Championships(PA), 2015-03-01(#17) |
| B-400 | 22 | 51.21 | Wells, Charlie (2015) (Penn Wood, PA) | TFCA of GP Last Chance Meet(PA), 2015-02-13(#4) |
| B-400 | 23 | 51.23 | Hughey, Peter (2015) (James Buchanan, PA) | Mt. Union HS Qualifier #1(OH), 2015-02-08(#1) |
| B-400 | 24 | 51.39 | Boucher, Oliver (2015) (Central Bucks East, PA) | PFTCA Indoor State Championships(PA), 2015-03-01(#18) |
| B-400 | 25 | 51.41 | Orlando, John (Cathedral Prep, PA) | TSTCA Indoor Championships(PA), 2015-02-21(#1) |
| B-400 | 26 | 51.46 | Bowman Jr., Charles (2015) (Central Dauphin, PA) | Dickinson College HS Invitational(PA), 2014-12-13(#1) |
| B-400 | 27 | 51.51 | Wolfe, Jacob (2015) (West Chester East, PA) | TFCA of GP Meet of Champions(PA), 2015-02-21(#7) |
| B-400 | 28 | 51.67 | Meier, Caden (2015) (Canon-McMillan, PA) | Kevin Dare HS Invitational(PA), 2015-01-24(#8) |
| B-400 | 29 | 51.69 | Hall, Ache (2016) (Springfield, PA) | Kevin Dare HS Invitational(PA), 2015-01-24(#9) |
| B-400 | 30 | 51.73 | Biden, Nick (2016) (The Haverford School For Boys, PA) | PFTCA Indoor State Championships(PA), 2015-03-01(#19) |
| B-400 | 31 | 51.92 | Hoousendove, Aliem (Pleasant Valley, PA) | New Paltz Running Camp Invitational(NY), 2014-12-13(#2) |
| B-400 | 32 | 51.97 | Garbark, Kevin (2015) (West Mifflin Area, PA) | TSTCA Indoor Meet #2(PA), 2015-01-31(#1) |
| B-400 | 33 | 51.98 | Eddinger, Dylan (2015) (Boyertown, PA) | TFCA of GP Meet #2(PA), 2014-12-20(#1) |
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| | | See more performances for B-400 | | |
