| Event | Rank | Mark | By | Meet |
| B-300H | 202 | 41.78 | Brewer, Tanner (2015) (Arthur, IL) | News-Gazette Honor Roll Meet(IL), 2015-05-18(#2) |
| B-300H | 203 | 41.80 | Perhon, Sebastian (2015) (Plainfield Central, IL) | Hunt Invitational(IL), 2015-04-30(#6) |
| B-300H | 204 | 41.81 | Wingerter, Issac (Chester, IL) | Herrin Boys Invitational(IL), 2015-04-15(#3) |
| B-300H | 204 | 41.81 | Williamson, Raymon (2016) (O'Fallon, IL) | Southwest Boys Conference Meet(IL), 2015-05-13(#7) |
| B-300H | 204 | 41.81 | Leedom, Travis (2017) (United Township, IL) | Western Big Six Boys Conference Meet(IL), 2015-05-15(#3) |
| B-300H | 207 | 41.83 | Schmidt, Zach (2015) (Milledgeville, IL) | IL 1A Bureau Valley Boys Sectional(IL), 2015-05-22(#3) |
| B-300H | 208 | 41.85 | Ekberg, Jared (Rockford Christian, IL) | IL 2A Sterling Boys Sectional(IL), 2015-05-22(#9) |
| B-300H | 209 | 41.86 | Magel, Ryan (2017) (Cary-Grove Community, IL) | Breese Tri-County Initational(IL), 2015-04-27(#1) |
| B-300H | 210 | 41.88 | Naranjo, Matthew (2016) (Niles North, IL) | CSL-North Boys Conference Meet(IL), 2015-05-15(#6) |
| B-300H | 210 | 41.88 | Echols, Cj (Centennial, IL) | News-Gazette Honor Roll Meet(IL), 2015-05-18(#3) |
| B-300H | 212 | 41.89 | Nesbitt, Demarlo (2016) (Belleville West, IL) | Belleville West Boys Invitational(IL), 2015-04-11(#16) |
| B-300H | 212 | 41.89 | O'Brien, Michael (2015) (Dundee-Crown, IL) | IL 3A West Aurora Boys Sectional(IL), 2015-05-21(#6) |
| B-300H | 212 | 41.89 | Engelhardt, Cameron (Tri-Valley, IL) | IL 1A Paxton-Buckley-Loda Boys Sectional(IL), 2015-05-21(#2) |
| B-300H | 215 | 41.93 | Moses, Forest (2015) (Northridge Prep, IL) | Independent School League Championships(IL), 2015-05-09(#1) |
| B-300H | 216 | 41.94 | Povalaitis, Marcos (2015) (Romeoville, IL) | Gus Scott Co-Ed Invitational(IL), 2015-04-17(#3) |
| B-300H | 217 | 41.95 | Urban, Tyler (2015) (Wheeling, IL) | Mid-Suburban League Boys Championships(IL), 2015-05-15(#8) |
| B-300H | 218 | 41.96 | Wright, Clay (2015) (Lexington, IL) | IL 1A Paxton-Buckley-Loda Boys Sectional(IL), 2015-05-21(#3) |
| B-300H | 219 | 42.00 | Harris, Tracker (2017) (Dunlap, IL) | Dunlap Co-Ed Relays(IL), 2015-01-01(#2) |
| B-300H | 219 | 42.00 | Pennel, Dillion (2015) (Jacksonville, IL) | Central State Eight Boys Conference Meet(IL), 2015-05-15(#3) |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | See more performances for B-300H | | |
