| Event | Rank | Mark | By | Meet |
| B-400 | 242 | 52.20 | Bussan, Alex (2013) (Cary-Grove Community, IL) | Al Bohrer Invitational(IL), 2013-04-06(#2) |
| B-400 | 242 | 52.20 | Clark, Devante (2014) (Jacksonville, IL) | Granite City Invitational(IL), 2013-04-12(#4) |
| B-400 | 242 | 52.20 | Bueno, Adan (2013) (Jefferson, IL) | Jefferson Boys Triangular(IL), 2013-04-30(#1) |
| B-400 | 245 | 52.21 | Gilstrap, Steven (2016) (Farmington, IL) | Roger Washburn Invitational(IL), 2013-04-26(#3) |
| B-400 | 246 | 52.22 | Hassler, Carson (2013) (Naperville Central, IL) | Wanner Knights Invitational(IL), 2013-04-26(#9) |
| B-400 | 247 | 52.23 | Lamendola, Alexander (2014) (Dixon, IL) | NIB-12 Conference Boys(IL), 2013-05-10(#8) |
| B-400 | 248 | 52.24 | Mueller, J.P. (2014) (Southwestern, IL) | Rochester Co-Ed Invitational(IL), 2013-04-20(#2) |
| B-400 | 248 | 52.24 | Hyland, Trent (2014) (Hinsdale Central, IL) | WSC-Silver Boys(IL), 2013-05-11(#8) |
| B-400 | 250 | 52.25 | Galaviz, Fedrico (2015) (Arcola, IL) | Tuscola Open(IL), 2013-04-22(#2) |
| B-400 | 250 | 52.25 | Howorth, Dillon (2014) (Yorkville, IL) | IL 3A Joliet West Boys Sectional(IL), 2013-05-16(#7) |
| B-400 | 252 | 52.26 | Edwards, Michael (2016) (Zion-Benton Twnshp, IL) | Wanner Knights Invitational(IL), 2013-04-26(#10) |
| B-400 | 252 | 52.26 | Newman, Dan (2013) (St. Charles East, IL) | Upstate Eight Conference Boys(IL), 2013-05-09(#10) |
| B-400 | 254 | 52.27 | Booker, Lemonte (2013) (Carl Sandburg, IL) | Bill Jackson Invitational(IL), 2013-05-03(#1) |
| B-400 | 255 | 52.28 | Robinson, Cody (Joliet West, IL) | SWSC-Blue Boys Championships(IL), 2013-05-08(#6) |
| B-400 | 256 | 52.29 | Hardnett, Blake (2013) (Glenwood, IL) | Titan Co-Ed Invitational(IL), 2013-04-22(#2) |
| B-400 | 256 | 52.29 | Bernardo, Nick (2013) (Buffalo Grove, IL) | Mustang Classic(IL), 2013-04-26(#2) |
| B-400 | 258 | 52.30 | Groot, Garrett (Fremd, IL) | Bill Jackson Invitational(IL), 2013-05-03(#2) |
| B-400 | 259 | 52.31 | Wheatley, Monterious (2015) (Springfield Southeast, IL) | Lanphier F/S Boys Invitational(IL), 2013-05-07(#1) |
| B-400 | 260 | 52.32 | Akuoko, Kwadjo (2014) (Springfield Southeast, IL) | Springfield Boys City Meet(IL), 2013-04-30(#2) |
| B-400 | 260 | 52.32 | Schoonover, Will (2016) (Havana, IL) | IL 1A Eureka Boys Sectional(IL), 2013-05-16(#6) |
| B-400 | 262 | 52.34 | Lee, Dallas (2014) (Heyworth, IL) | IL 1A Boys State Prelims(IL), 2013-05-23(#20) |
| B-400 | 263 | 52.35 | Mcmorrow, Ryan (2013) (Metamora, IL) | Mid Illini Conference Boys(IL), 2013-05-07(#5) |
| B-400 | 263 | 52.35 | Mills, Brandon (2013) (Tuscola, IL) | Tuscola Open(IL), 2013-04-22(#3) |
| B-400 | 263 | 52.35 | Johnson, Tyler (2015) (St. Rita, IL) | Chicago Catholic League F/S Championships(IL), 2013-05-03(#2) |
| B-400 | 263 | 52.35 | Reed, Malcolm (2014) (Grayslake Central, IL) | IL 2A Vernon Hills Boys Sectional(IL), 2013-05-17(#7) |
| B-400 | 267 | 52.37 | Hall, Nate (2013) (Glenbard West, IL) | Jim Arnold Invitational(IL), 2013-04-27(#9) |
| B-400 | 268 | 52.38 | Haynie, Spencer (2013) (United Township, IL) | Galesburg Boys ABC Invitational(IL), 2013-04-12(#2) |
| B-400 | 268 | 52.38 | Stearns, Kyle (2014) (York Community, IL) | Wanner Knights Invitational(IL), 2013-04-26(#11) |
| B-400 | 268 | 52.38 | Kirby, Joe (2014) (Wheaton North, IL) | Jim Arnold Invitational(IL), 2013-04-27(#10) |
| B-400 | 268 | 52.38 | Mitchell, Demitius (2015) (Thornton Township, IL) | USATF JO IL Assc Champs(IL), 2013-06-23(#9) |
| B-400 | 272 | 52.39 | Slattery, Collin (2015) (Carl Sandburg, IL) | IL 3A Downers Grove North Boys Sectional(IL), 2013-05-17(#4) |
| B-400 | 272 | 52.39 | Yarborough, Keenan (2013) (Limestone Community, IL) | PJS Honor Roll Meet(IL), 2013-05-22(#3) |
| B-400 | 274 | 52.40 | Hutsalyuk, Pavlo (2015) (Lane Technical, IL) | St. Ignatius / Lane Tech Co-Ed Dual(IL), 2013-04-03(#2) |
| B-400 | 274 | 52.40 | Hollendonner, Ian (Carl Sandburg, IL) | Oak Lawn Invitational(IL), 2013-04-13(#3) |
| B-400 | 274 | 52.40 | Janca, Mitchell (2014) (Buffalo Grove, IL) | MSL-East Division Boys Championship(IL), 2013-04-24(#2) |
| B-400 | 277 | 52.41 | Sorrill, Jacob (2013) (Liberty, IL) | IL 1A Beardstown Boys Sectional(IL), 2013-05-17(#2) |
| B-400 | 278 | 52.42 | Brown, Jeremiah (2013) (O'Fallon, IL) | IL 3A Rock Island Boys Sectional(IL), 2013-05-17(#11) |
| B-400 | 279 | 52.44 | Boadu, Chris (2013) (Bolingbrook, IL) | Carlin Nalley Invitational(IL), 2013-05-04(#10) |
| B-400 | 279 | 52.44 | Reicheneker, Collin (2014) (Elmwood-Brimfield, IL) | IL 1A Sherrard Boys Sectional(IL), 2013-05-17(#5) |
| B-400 | 281 | 52.45 | Crump, Tredarius (Zion-Benton Twnshp, IL) | North Suburban Conference Boys(IL), 2013-05-09(#6) |
| B-400 | 282 | 52.47 | Deters, Justin (2014) (Tolono Unity, IL) | IL 1A Tolono Unity Boys Sectional(IL), 2013-05-17(#2) |
| B-400 | 283 | 52.48 | Lopez, Christian (2015) (Auburn, IL) | Wanner Knights Invitational(IL), 2013-04-26(#12) |
| B-400 | 283 | 52.48 | Hohlfelder, Sam (2014) (Mahomet-Seymour, IL) | Corn Belt Conference Championships(IL), 2013-05-06(#2) |
| B-400 | 285 | 52.49 | Portor, Andrew (Normal University, IL) | Mahomet-Seymour Boys Invitational(IL), 2013-05-11(#2) |
| B-400 | 285 | 52.49 | Garcia, Julius (2013) (Neuqua Valley, IL) | IL 3A Joliet West Boys Sectional(IL), 2013-05-16(#8) |
| B-400 | 285 | 52.49 | Barrio, Jose (2015) (Rockford Christian, IL) | AAU Area 14 National Qualifier(IL), 2013-06-09(#11) |
| B-400 | 288 | 52.50 | Hupp, Chad (Thornridge, IL) | Terry Englund Relays(IL), 2013-04-20(#4) |
| B-400 | 288 | 52.50 | Centeno, Robert (2014) (Reavis, IL) | Harry McDaniel Classic(IL), 2013-05-02(#2) |
| B-400 | 288 | 52.50 | Hennig, Joshua (2014) (Springfield Lutheran, IL) | IL 1A Eureka Boys Sectional(IL), 2013-05-16(#7) |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | See more performances for B-400 | | |
