| Event | Rank | Mark | By | Meet |
| B-400H | 1 | 52.55 | Smith, Jacob (2016) (West Burlington, IA) (US#11) | Drake Relays(IA), 2015-04-25(#1) |
| B-400H | 2 | 53.22 | Gray, Pat (2015) (Waukee, IA) (US#23) | IA 4A State Meet(IA), 2015-05-23(#1) |
| B-400H | 3 | 53.35 | Crosser, Cameron (2015) (Algona, IA) (US#26) | IA 3A State Meet(IA), 2015-05-23(#1) |
| B-400H | 4 | 53.49 | Rhoads, Wyatt (2015) (Gilbert, IA) (US#31) | Senior Spotlight Meet(IA), 2015-06-13(#2) |
| B-400H | 5 | 53.57 | Heinrichs, Justin (2015) (Estherville Lincoln Central, IA) (US#36) | IA 2A State Meet(IA), 2015-05-23(#2) |
| B-400H | 6 | 53.74 | Eller, Gage (2015) (Ames, IA) (US#46) | IA 4A State Meet(IA), 2015-05-23(#2) |
| B-400H | 7 | 53.78 | Frost, JoJo (2017) (Center Point-Urbana, IA) (US#49) | IA 3A State Meet(IA), 2015-05-23(#2) |
| B-400H | 8 | 53.90 | Kennicker, Nick (2016) (Northeast, IA) (US#55) | Drake Relays(IA), 2015-04-25(#3) |
| B-400H | 9 | 54.05 | Pedersen, Nick (2016) (Underwood, IA) (US#65) | IA 2A State Meet(IA), 2015-05-23(#3) |
| B-400H | 10 | 54.18 | Daley, Brett (2017) (Treynor, IA) (US#72) | IA 2A State Meet(IA), 2015-05-23(#4) |
| B-400H | 11 | 54.29 | Engel, Nick (2016) (Hudson, IA) (US#77) | IA 1A State Meet(IA), 2015-05-23(#1) |
| B-400H | 12 | 54.37 | Barclay, Wade (Southeast Polk, IA) (US#83) | IA 4A State Meet(IA), 2015-05-23(#3) |
| B-400H | 13 | 54.50 | Sommers, Clayton (2015) (Saydel, IA) (US#93) | IA 3A State Meet(IA), 2015-05-23(#3) |
| B-400H | 14 | 54.58 | Nimmers, Isaiah (2016) (Washington, IA) (US#97) | IA 4A State Meet(IA), 2015-05-23(#4) |
| | | National Elites above. State Elites below | | |
| B-400H | 15 | 54.92 | Sanders, Henry (2015) (Carlisle, IA) | IA 3A State Meet(IA), 2015-05-23(#4) |
| B-400H | 16 | 54.95 | Coats, Austin (2016) (John F Kennedy, IA) | IA 4A State Meet(IA), 2015-05-23(#5) |
| B-400H | 17 | 55.02 | Woods, Riley (2015) (Wapsie Valley, IA) | IA 1A State Meet(IA), 2015-05-23(#2) |
| B-400H | 18 | 55.08 | Petersen, Dakota (2015) (Muscatine, IA) | Bettendorf Boys ABC Invitational(IA), 2015-05-01(#1) |
| B-400H | 19 | 55.20 | Bergstrom, Jack (2015) (Johnston, IA) | Jim Duncan Invitational(IA), 2015-04-10(#2) |
| B-400H | 20 | 55.25 | Clasen, Noah (2015) (Xavier, IA) | IA 3A State Meet(IA), 2015-05-23(#5) |
| B-400H | 21 | 55.26 | Hayden, Joe (2016) (Kingsley-Pierson, IA) | IA 2A State Meet(IA), 2015-05-23(#6) |
| B-400H | 22 | 55.29 | Whipple, Daric (2016) (Greene, IA) | IA 3A State Meet(IA), 2015-05-23(#6) |
| B-400H | 23 | 55.32 | Meyer, Benjamin (2016) (South Winneshiek, IA) | IA 2A State Meet(IA), 2015-05-23(#7) |
| B-400H | 24 | 55.36 | Barrett, Isaac (2015) (Denver, IA) | IA 1A State Meet(IA), 2015-05-23(#3) |
| B-400H | 25 | 55.38 | Jellings, David (2015) (North Fayette, IA) | Crestwood Boys Invitational(IA), 2015-04-14(#1) |
| B-400H | 26 | 55.40 | Christensen, Sam (2015) (Waterloo West, IA) | IA 4A State Meet(IA), 2015-05-23(#6) |
| B-400H | 27 | 55.44 | White, Spencer (2015) (Mt Pleasant, IA) | IA 3A State Meet(IA), 2015-05-23(#7) |
| B-400H | 28 | 55.55 | Seymour, Collin (2016) (Dubuque, IA) | IA 4A State Meet(IA), 2015-05-23(#7) |
| B-400H | 29 | 55.64 | Clouse, Jacob (2017) (Albia, IA) | IA 2A State Meet(IA), 2015-05-23(#8) |
| B-400H | 30 | 55.70 | Noel, Kaleb (2015) (Woodward-Granger, IA) | IA 2A State Meet(IA), 2015-05-23(#9) |
| B-400H | 31 | 55.78 | Nightser, Dylan (2015) (Thomas Jefferson, IA) | IA 4A State Meet(IA), 2015-05-23(#9) |
| B-400H | 32 | 55.82 | Von Essen, Carter (2016) (Glenwood, IA) | IA 3A State Meet(IA), 2015-05-23(#9) |
| B-400H | 33 | 55.95 | Kauffmann, Alex (2017) (Western Dubuque, IA) | IA 4A State Meet(IA), 2015-05-23(#10) |
| B-400H | 34 | 55.97 | Wessels, Nick (2016) (Waukee, IA) | IA 4A State Meet(IA), 2015-05-23(#11) |
| B-400H | 35 | 55.98 | Coleman, Marcus (2015) (Johnston, IA) | IA 4A State Meet(IA), 2015-05-23(#12) |
| B-400H | 35 | 55.98 | Saunders, Garrett (2015) (Van Buren Community, IA) | IA 1A State Meet(IA), 2015-05-23(#4) |
| B-400H | 37 | 56.02 | Holmes, Brendan (2016) (Atlantic, IA) | IA 3A State Meet(IA), 2015-05-23(#10) |
| B-400H | 38 | 56.07 | Staats, Grant (2015) (Mount Ayr, IA) | IA 1A State Meet(IA), 2015-05-23(#5) |
| B-400H | 39 | 56.14 | Stoakes, Eric (2016) (Gladbrook-Reinbeck, IA) | IA 1A State Meet(IA), 2015-05-23(#6) |
| B-400H | 40 | 56.15 | Brantley, Thomas (2015) (Camanche, IA) | IA 2A State Meet(IA), 2015-05-23(#10) |
| B-400H | 41 | 56.21 | Bates, Peter (2015) (Waverly-Shell Rock, IA) | IA 3A State Meet(IA), 2015-05-23(#11) |
| B-400H | 42 | 56.31 | Trumm, Kurt (2016) (Cascade, IA) | IA 2A State Meet(IA), 2015-05-23(#11) |
| B-400H | 43 | 56.41 | Barrett, Riley (2017) (Applntn-Parksbg, IA) | IA 2A State Meet(IA), 2015-05-23(#12) |
| B-400H | 44 | 56.47 | Cataldo, Sam (2016) (Garner-Hayfield, IA) | IA 2A State Meet(IA), 2015-05-23(#13) |
| B-400H | 45 | 56.49 | Henrich, Terrill (Hinton, IA) | Panther-Wildcat Relays(IA), 2015-04-13(#2) |
| B-400H | 45 | 56.49 | Heitshusen, Noah (2016) (Williamsburg, IA) | IA 3A State Meet(IA), 2015-05-23(#12) |
| B-400H | 47 | 56.51 | Gardner, Matt (2016) (John F Kennedy, IA) | IA 4A State Meet(IA), 2015-05-23(#13) |
| B-400H | 48 | 56.54 | Bryant, Tyler (2015) (Central Lee, IA) | IA 2A State Meet(IA), 2015-05-23(#14) |
| B-400H | 49 | 56.56 | Peters, Austin (2016) (Lawton, IA) | IA 1A State Meet(IA), 2015-05-23(#7) |
| B-400H | 50 | 56.57 | Poss, Ben (2015) (Johnston, IA) | IA 4A State Meet(IA), 2015-05-23(#14) |
| B-400H | 51 | 56.62 | Barney, Isaiah (2016) (Cedar Falls, IA) | IA 4A State Meet(IA), 2015-05-23(#15) |
| B-400H | 52 | 56.63 | Chiman, Akuei (2016) (Ames, IA) | IA 4A State Meet(IA), 2015-05-23(#16) |
| B-400H | 53 | 56.69 | Shawver, Matt (2016) (West Branch, IA) | IA 2A State Meet(IA), 2015-05-23(#15) |
| B-400H | 54 | 56.77 | Kerns, Derrik (2015) (Maple Valley-Anthon Oto, IA) | IA 2A State Meet(IA), 2015-05-23(#16) |
| B-400H | 55 | 56.78 | Asche, Luke (2015) (Bcluw, IA) | IA 1A State Meet(IA), 2015-05-23(#8) |
| B-400H | 56 | 56.80 | Niemann, James (2015) (West Central, IA) | IA 1A State Meet(IA), 2015-05-23(#9) |
| B-400H | 57 | 56.87 | Lee, Kevin (2016) (Woodbine, IA) | IA 1A State Meet(IA), 2015-05-23(#10) |
| B-400H | 58 | 56.91 | Werning, Kyle (Pleasant Valley, IA) | Bettendorf Boys ABC Invitational(IA), 2015-05-01(#2) |
| B-400H | 59 | 56.93 | Gebel, Miles (2016) (OA-BCIG, IA) | IA 2A State Meet(IA), 2015-05-23(#18) |
| B-400H | 60 | 57.00 | House, Nick (2017) (Linn-Mar, IA) | IA 4A State Meet(IA), 2015-05-23(#17) |
| B-400H | 60 | 57.00 | Schnurr, Tyler (2015) (Bishop Garrigan, IA) | IA 1A State Meet(IA), 2015-05-23(#11) |
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| | | See more performances for B-400H | | |
