| Event | Rank | Mark | By | Meet |
| | | National Elites above. State Elites below | | |
| B-300H | 1 | 38.64 | Fontaine, Micah (2015) (Edmond Memorial, OK) | Central OK Conference(OK), 2015-04-30(#1) |
| B-300H | 2 | 38.66 | Simpkins, Clarence (2015) (Moore, OK) | OK 6A State Meet(OK), 2015-05-16(#1) |
| B-300H | 3 | 38.87 | Elder, Caleb (2016) (Broken Arrow, OK) | OK 6A State Meet(OK), 2015-05-16(#2) |
| B-300H | 4 | 39.10 | McBrayer, James (2015) (Altus, OK) | OK 5A State Meet(OK), 2015-05-16(#1) |
| B-300H | 5 | 39.42 | Sander, Kyle (2016) (Deer Creek, OK) | OK 5A State Meet(OK), 2015-05-16(#2) |
| B-300H | 6 | 39.48 | Jones, Isaiah (2016) (Edmond Memorial, OK) | Central OK Conference(OK), 2015-04-30(#3) |
| B-300H | 7 | 39.82 | Odell, Braeden (2016) (Marlow, OK) | OK 3A State Meet(OK), 2015-05-12(#1) |
| B-300H | 8 | 39.90 | Cohen, Chris (2016) (Edmond Memorial, OK) | OK 6A State Meet(OK), 2015-05-16(#3) |
| B-300H | 9 | 40.01 | McBrayer, Ben (2015) (Altus, OK) | OU John Jacobs Invitational(OK), 2015-04-17(#2) |
| B-300H | 10 | 40.08 | Cubit, Daekwon (2015) (Broken Bow, OK) | OK 4A State Meet(OK), 2015-05-12(#1) |
| B-300H | 10 | 40.08 | Hammack, Nathan (2015) (Claremore, OK) | OK 6A State Meet(OK), 2015-05-16(#5) |
| B-300H | 12 | 40.09 | Knowles, Pete (2015) (Wynnewood, OK) | OK 2A State Meet(OK), 2015-05-12(#1) |
| B-300H | 13 | 40.13 | Wilson, Chandler (2017) (Commerce, OK) | OK 2A State Meet(OK), 2015-05-12(#2) |
| B-300H | 14 | 40.24 | Taylor, Ethan (2016) (Piedmont, OK) | OK 5A State Meet(OK), 2015-05-16(#3) |
| B-300H | 15 | 40.46 | Spain, Cayden (2016) (Purcell, OK) | OK 4A State Meet(OK), 2015-05-12(#2) |
| B-300H | 16 | 40.58 | Moore, Ethan (2015) (Santa Fe South, OK) | OK 4A State Meet(OK), 2015-05-12(#1) |
| B-300H | 17 | 40.60 | Roy, Braden (2015) (Bishop McGuinness, OK) | Big 10 Conference(OK), 2015-04-30(#1) |
| B-300H | 18 | 40.63 | Ross, Daniel (2015) (Burlington, OK) | OK 1A State Meet(OK), 2015-05-12(#1) |
| B-300H | 19 | 40.70 | Briley, Chris (2015) (Norman North, OK) | OU John Jacobs Invitational(OK), 2015-04-17(#3) |
| B-300H | 20 | 40.74 | Bowler, Daviaun (2017) (Edmond Santa Fe, OK) | OK 6A Region Norman(OK), 2015-05-11(#1) |
| B-300H | 21 | 40.75 | Brockup, William (2016) (Inola, OK) | Vinita Relays(OK), 2015-04-21(#1) |
| B-300H | 22 | 40.77 | Pruitt, John (2016) (Westville, OK) | OK 3A State Meet(OK), 2015-05-12(#2) |
| B-300H | 23 | 40.80 | Klotz, Joel (2015) (Lincoln Christian, OK) | Vinita Relays(OK), 2015-04-21(#2) |
| B-300H | 24 | 40.81 | Norris, Ashtan (2015) (Edmond Santa Fe, OK) | OK 6A Region Norman(OK), 2015-05-11(#2) |
| B-300H | 25 | 40.86 | Portillo, Dylan (2017) (Guymon, OK) | OK 5A State Meet(OK), 2015-05-16(#4) |
| B-300H | 26 | 40.88 | Cole, Chandler (2017) (Collinsville, OK) | OK 5A State Meet(OK), 2015-05-16(#5) |
| B-300H | 27 | 40.96 | Savage, Cooper (2016) (Lindsay, OK) | OK 3A State Meet(OK), 2015-05-12(#2) |
| B-300H | 28 | 40.98 | Dobbs, Keegan (2015) (Hennessey, OK) | OK 3A State Meet(OK), 2015-05-12(#4) |
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| | | See more performances for B-300H | | |
