| Event | Rank | Mark | By | Meet |
| | | National Elites above. State Elites below | | |
| B-300H | 1 | 38.71 | Kirby, Josh (2015) (Peoria Christian, IL) | IL 1A Boys State Finals(IL), 2015-05-30(#1) |
| B-300H | 2 | 39.69 | Strader, Clayton (2016) (Arcola, IL) | IL 1A Boys State Finals(IL), 2015-05-30(#3) |
| B-300H | 3 | 39.92 | Drees, Riley (2015) (Teutopolis, IL) | IL 1A Boys State Finals(IL), 2015-05-30(#4) |
| B-300H | 4 | 40.11 | Todhunter, Reagan (2015) (Sterling Newman, IL) | IL 1A Boys State Finals(IL), 2015-05-30(#5) |
| B-300H | 5 | 40.26 | Wilson, Konner (2016) (Oregon, IL) | IL 1A Boys State Prelims(IL), 2015-05-28(#6) |
| B-300H | 6 | 40.54 | Ruddell, Jerry (2015) (Rockridge, IL) | IL 1A Boys State Prelims(IL), 2015-05-28(#7) |
| B-300H | 7 | 40.72 | O'Connor, Carl (2015) (ROWVA, IL) | IL 1A Farmington Boys Sectional(IL), 2015-05-22(#2) |
| B-300H | 8 | 40.75 | Margason, Andy (2016) (Timothy Christian, IL) | IL 1A Lisle Boys Sectional(IL), 2015-05-22(#1) |
| B-300H | 9 | 40.76 | Golemon, Hayden (2017) (Elmwood-Brimfield, IL) | IL 1A Farmington Boys Sectional(IL), 2015-05-22(#3) |
| B-300H | 10 | 40.83 | Dannis, Bret (2018) (St. Bede, IL) | IL 1A Boys State Prelims(IL), 2015-05-28(#8) |
| B-300H | 11 | 40.94 | Mugele, Ryan (2016) (Wesclin, IL) | IL 1A Chester Boys Sectional(IL), 2015-05-21(#1) |
| B-300H | 12 | 40.96 | Miller, Adam (2017) (Pana, IL) | IL 1A Pana Boys Sectional(IL), 2015-05-21(#2) |
| B-300H | 13 | 40.98 | (h-, (3) (North Shore Country Day, IL) | IL 1A Lisle Boys Sectional(IL), 2015-05-22(#2) |
| B-300H | 14 | 41.09 | Wintjen, Dustin (2015) (Pittsfield, IL) | IL 1A Beardstown Boys Sectional(IL), 2015-05-22(#1) |
| B-300H | 15 | 41.10 | Odunewu, Hmaeed (2015) (Mooseheart, IL) | IL 1A Boys State Prelims(IL), 2015-05-28(#10) |
| B-300H | 15 | 41.10 | Formolo, Anderson Jr Winnetka (No (A-C Central, IL) | IL 1A Boys State Prelims(IL), 2015-05-28(#11) |
| B-300H | 17 | 41.21 | Falconer, Danny (2015) (Byron, IL) | IL 1A Byron Boys Sectional(IL), 2015-05-22(#2) |
| B-300H | 17 | 41.21 | Miller, Trey (2017) (Lewistown, IL) | Roger Washburn Invitational(IL), 2015-05-01(#1) |
| B-300H | 19 | 41.24 | Wayda, Jake (2015) (Pleasant Plains, IL) | IL 1A Boys State Prelims(IL), 2015-05-28(#13) |
| B-300H | 20 | 41.27 | Christensen, AJ (2018) (Polo Comm, IL) | IL 1A Byron Boys Sectional(IL), 2015-05-22(#3) |
| B-300H | 21 | 41.36 | Poff, Nick (2015) (St. Joseph-Ogden, IL) | Tolono Unity Boys Invitational(IL), 2015-04-24(#1) |
| B-300H | 22 | 41.39 | Wingereter, Issiac (2015) (Chester, IL) | IL 1A Boys State Prelims(IL), 2015-05-28(#15) |
| B-300H | 23 | 41.41 | Ellens, Chad (2015) (Chicago Christian, IL) | IL 1A Seneca Boys Sectional(IL), 2015-05-22(#2) |
| B-300H | 24 | 41.45 | Petrie, Noah (2017) (Heyworth, IL) | IL 1A Boys State Prelims(IL), 2015-05-28(#17) |
| B-300H | 25 | 41.61 | Bonk, Dyllan (2016) (Camp Point Central, IL) | IL 1A Beardstown Boys Sectional(IL), 2015-05-22(#2) |
| B-300H | 26 | 41.62 | Huffstutler, Adam (2015) (Mercer County, IL) | Lincoln Trail Conference Meet(IL), 2015-05-08(#1) |
| B-300H | 27 | 41.64 | Bowen, James (2015) (Seneca, IL) | Seneca Irish Invitational(IL), 2015-04-17(#1) |
| B-300H | 28 | 41.68 | Welch, Lee (2015) (Mt Olive, IL) | IL 1A Staunton Sectional(IL), 2015-05-21(#1) |
| B-300H | 29 | 41.73 | Holmes, Lance (Red Hill, IL) | IL 1A Lawrenceville Boys Sectional(IL), 2015-05-21(#2) |
| B-300H | 30 | 41.78 | Brewer, Tanner (2015) (Arthur, IL) | News-Gazette Honor Roll Meet(IL), 2015-05-18(#2) |
| B-300H | 31 | 41.81 | Wingerter, Issac (Chester, IL) | Herrin Boys Invitational(IL), 2015-04-15(#3) |
| B-300H | 32 | 41.83 | Schmidt, Zach (2015) (Milledgeville, IL) | IL 1A Bureau Valley Boys Sectional(IL), 2015-05-22(#3) |
| B-300H | 33 | 41.89 | Engelhardt, Cameron (Tri-Valley, IL) | IL 1A Paxton-Buckley-Loda Boys Sectional(IL), 2015-05-21(#2) |
| B-300H | 34 | 41.93 | Moses, Forest (2015) (Northridge Prep, IL) | Independent School League Championships(IL), 2015-05-09(#1) |
| B-300H | 35 | 41.96 | Wright, Clay (2015) (Lexington, IL) | IL 1A Paxton-Buckley-Loda Boys Sectional(IL), 2015-05-21(#3) |
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| | | See more performances for B-300H | | |
