| Event | Rank | Mark | By | Meet |
| B-400 | 1 | 47.94 | Williams, Kaleb (2012) (Bloom Township, IL) | USATF Region 7 Junior Olympics(IN), 2012-07-08(#1) |
| B-400 | 1 | 47.94 | Allen, Kenneth (2013) (Thornwood, IL) | NB Nationals - Championship(NC), 2012-06-16(#8) |
| B-400 | 3 | 47.95 | Farley, Antonio (2012) (Round Lake, IL) | IL 3A Boys State Prelims(IL), 2012-05-25(#1) |
| B-400 | 4 | 48.11 | Penrod, Brandon (2012) (Triad, IL) | IL 2A Mascoutah Sectional(IL), 2012-05-18(#1) |
| | | National Elites above. State Elites below | | |
| B-400 | 5 | 48.25 | Brady, Marlin (2014) (Cahokia, IL) | IL 2A Mascoutah Sectional(IL), 2012-05-18(#2) |
| B-400 | 6 | 48.30 | Melto, Mac (2012) (Northside Prep, IL) | Gans-Zeedyk Invitational(IL), 2012-04-07(#1) |
| B-400 | 7 | 48.50 | Harrison, Malik (2013) (Springfield, IL) | IL Boys State Finals(IL), 2012-05-26(#4) |
| B-400 | 8 | 48.74 | Thelemaque, Stepfan (2012) (Plainfield East, IL) | IL Boys State Finals(IL), 2012-05-26(#5) |
| B-400 | 9 | 48.75 | Bender, Jacob (2012) (Neuqua Valley, IL) | Upstate Eight Boys Valley Division(IL), 2012-05-10(#1) |
| B-400 | 10 | 48.77 | Mazanke, Jake (2012) (St. Charles East, IL) | John Bell Invitational(IL), 2012-04-14(#1) |
| B-400 | 11 | 48.90 | Timm, Dalton (2012) (Springfield, IL) | Springfield Boys City Meet(IL), 2012-05-01(#1) |
| B-400 | 12 | 48.97 | Farmer, Daniel (2012) (Johnston City, IL) | IL 1A State Prelims(IL), 2012-05-24(#1) |
| B-400 | 13 | 49.00 | Rohn, Tommy (2012) (Cary-Grove Community, IL) | Fox Valley Conf Boys Championships(IL), 2012-05-11(#1) |
| B-400 | 14 | 49.03 | Wallace, Greg (2012) (Tinley Park, IL) | IL Boys State Finals(IL), 2012-05-26(#3) |
| B-400 | 15 | 49.05 | Nance, Joshua (2012) (Homewood-Flossmoor, IL) | Homewood-Flossmoor Boys Invitational(IL), 2012-04-14(#1) |
| B-400 | 15 | 49.05 | Law, Deandre (2012) (Galesburg, IL) | IL Boys State Finals(IL), 2012-05-26(#4) |
| B-400 | 17 | 49.08 | Howard, Dakarai (2012) (Whitney Young, IL) | IL 3A Boys State Prelims(IL), 2012-05-25(#6) |
| B-400 | 18 | 49.09 | Randolph, Jeremy (2012) (Belleville West, IL) | Belleville West Invitational(IL), 2012-04-06(#1) |
| B-400 | 19 | 49.11 | Broger, Jeff (2013) (South Elgin, IL) | IL 3A Boys State Prelims(IL), 2012-05-25(#7) |
| B-400 | 20 | 49.12 | Munar, Jordan (2012) (Downers Grove North, IL) | WSC-Silver Boys Conference(IL), 2012-05-11(#1) |
| B-400 | 21 | 49.16 | Young, Quest (2012) (Plainfield North, IL) | Suburban Prairie Boys Conference(IL), 2012-05-10(#1) |
| B-400 | 22 | 49.22 | Wolff, Mitch (2012) (Plainfield South, IL) | Bill Jackson Invitational(IL), 2012-05-04(#1) |
| B-400 | 23 | 49.30 | Gleeson, Michael (2013) (Cary-Grove Community, IL) | IL 3A Boys State Prelims(IL), 2012-05-25(#8) |
| B-400 | 23 | 49.30 | Brown, Mike (2012) (Argo Community, IL) | Argo Boys Invitational(IL), 2012-04-07(#1) |
| B-400 | 25 | 49.31 | Ward, Kevin (2013) (Providence Catholic, IL) | IL 2A Boys State Prelims(IL), 2012-05-25(#3) |
| B-400 | 26 | 49.32 | Shelton, Demetrius (2013) (Bremen, IL) | IL 2A Lincoln-Way West Sectional(IL), 2012-05-17(#1) |
| B-400 | 27 | 49.40 | Bouie, Ben (2015) (Eisenhower , IL) | Harry McDaniel Classic(IL), 2012-05-03(#1) |
| B-400 | 28 | 49.42 | Hopkins, Tevin (2012) (Minooka Community, IL) | Suburban Prairie Boys Conference(IL), 2012-05-10(#2) |
| B-400 | 29 | 49.43 | Rantis, Michael (2012) (Lake Zurich, IL) | IL 3A Fremd Sectional(IL), 2012-05-18(#2) |
| B-400 | 30 | 49.44 | Jordan, Deshawn (2013) (North Lawndale Charter, IL) | IL 3A Boys State Prelims(IL), 2012-05-25(#10) |
| B-400 | 31 | 49.47 | Edwards, Calvin (2012) (Joliet West, IL) | John Bell Invitational(IL), 2012-04-14(#2) |
| B-400 | 32 | 49.51 | Sommer, Stirling (2012) (Prairie Central, IL) | Mahomet-Seymour Invitational(IL), 2012-05-12(#1) |
| B-400 | 33 | 49.53 | Foster, Stedman (2012) (Morgan Park, IL) | IL 3A St. Ignatius Sectional(IL), 2012-05-17(#2) |
| B-400 | 34 | 49.56 | Kirby, Zach (2013) (St. Charles North, IL) | Les Hodge Invitational(IL), 2012-04-07(#1) |
| B-400 | 35 | 49.59 | Moredock, Ryan (2012) (Richwoods, IL) | IL 3A Belleville West Sectional(IL), 2012-05-18(#3) |
| B-400 | 36 | 49.60 | Chapman, Leroy (2013) (Antioch, IL) | Gans-Zeedyk Invitational(IL), 2012-04-07(#2) |
| B-400 | 36 | 49.60 | Omar, Neal (2012) (Niles West, IL) | CSL-South Boys Championship(IL), 2012-05-11(#2) |
| B-400 | 36 | 49.60 | Cornelius, Kendric (2012) (Palatine, IL) | MSL West Boys Divisional Meet(IL), 2012-04-24(#1) |
| B-400 | 36 | 49.60 | Fritz, Tom (2012) (Maine South, IL) | CSL-South Boys Championship(IL), 2012-05-11(#1) |
| B-400 | 36 | 49.60 | Williams, Aquintis (2013) (MacArthur, IL) | Big 12 Boys Conference (IL), 2012-05-11(#1) |
| B-400 | 41 | 49.63 | Click, Taylor (2012) (Lake Forest Academy, IL) | USA Youth Champs - YM/YW(TX), 2012-07-01(#8) |
| B-400 | 42 | 49.64 | Wilson, Chris (2014) (Minooka Community, IL) | Suburban Prairie Boys Conference(IL), 2012-05-10(#3) |
| B-400 | 43 | 49.72 | Davis, Justin (2013) (Geneva, IL) | Mike Vandeever Invitational(IL), 2012-04-14(#1) |
| B-400 | 44 | 49.80 | Decoursey, Cameron (2013) (Wheeling, IL) | John Davis Titan Invitational(IL), 2012-05-04(#1) |
| B-400 | 44 | 49.80 | Ifianayi, Paul (2015) (Elk Grove, IL) | IL 3A Boys State Prelims(IL), 2012-05-25(#14) |
| B-400 | 44 | 49.80 | Goad, Scott (2012) (Dixon, IL) | NIB XII Boys Conference(IL), 2012-05-11(#1) |
| B-400 | 47 | 49.82 | Ray, Trevor (2013) (Lakes, IL) | IL 2A Boys State Prelims(IL), 2012-05-25(#7) |
| B-400 | 48 | 49.85 | Burke, John (2013) (Waubonsie Valley, IL) | Saxons Invitational(IL), 2012-04-07(#2) |
| B-400 | 49 | 49.88 | Flowers, Marquis (2012) (Plainfield North, IL) | Suburban Prairie Boys Conference(IL), 2012-05-10(#5) |
| B-400 | 50 | 49.90 | King, Will (2012) (Metea Valley, IL) | Gans-Zeedyk Invitational(IL), 2012-04-07(#3) |
| B-400 | 50 | 49.90 | Hill, Demonte (2013) (Evanston Township, IL) | CSL-South Boys Championship(IL), 2012-05-11(#3) |
| B-400 | 52 | 49.91 | Anyiwo, Matt (2014) (Homewood-Flossmoor, IL) | USATF Ntl JO IB IG(MD), 2012-07-28(#8) |
| B-400 | 53 | 49.94 | Kohlbacher, Kerry (2012) (Prairie Ridge, IL) | IL 3A Hononegah Sectional(IL), 2012-05-17(#3) |
| B-400 | 54 | 49.96 | Bremhorst, Peter (2012) (Springfield, IL) | Collinsville Invitational(IL), 2012-05-05(#4) |
| B-400 | 54 | 49.96 | Doll, Tim (2014) (Westmont, IL) | IL 1A Chicago University Sectional(IL), 2012-05-17(#1) |
| B-400 | 56 | 50.01 | Bonner, Jalen (2012) (Plainfield South, IL) | Suburban Prairie Boys Conference(IL), 2012-05-10(#6) |
| B-400 | 56 | 50.01 | Elkins, Zeke (2012) (St. Joseph-Ogden, IL) | IL Boys State Finals(IL), 2012-05-26(#3) |
| B-400 | 58 | 50.04 | Adeyemo, Moshood (2013) (Hillcrest, IL) | Homewood-Flossmoor Boys Invitational(IL), 2012-04-14(#3) |
| B-400 | 58 | 50.04 | Allen, Damion (2014) (LaSalle-Peru, IL) | NIB XII Boys Conference(IL), 2012-05-11(#2) |
| B-400 | 58 | 50.04 | Clark, Phabian (2012) (Wheaton-Warrenville South, IL) | IL 3A Whtn-Wrnvl South Sectional(IL), 2012-05-18(#2) |
| B-400 | 61 | 50.06 | Parr, Adam (2012) (Metamora, IL) | IL 2A Boys State Prelims(IL), 2012-05-25(#9) |
| B-400 | 62 | 50.07 | Jideonwo, Charles (2012) (Bremen, IL) | IL 2A Boys State Prelims(IL), 2012-05-25(#10) |
| B-400 | 63 | 50.09 | Bransby, Sam (2014) (Naperville Central, IL) | DupageValley Conference Boys Championship(IL), 2012-05-11(#1) |
| B-400 | 63 | 50.09 | Sellers, Tevin (2013) (Lena-Winslow, IL) | IL Boys State Finals(IL), 2012-05-26(#4) |
| B-400 | 65 | 50.10 | Vail, Christian (Fremd, IL) | MSL West Boys Divisional Meet(IL), 2012-04-24(#2) |
| B-400 | 65 | 50.10 | Dickholtz, Austin (2013) (Glenbrook South, IL) | CSL-South Boys Championship(IL), 2012-05-11(#4) |
| B-400 | 65 | 50.10 | McGee, Brock (2012) (Herrin, IL) | IL 2A Mascoutah Sectional(IL), 2012-05-18(#3) |
| B-400 | 68 | 50.12 | Shipp, Derrick (2012) (Manual, IL) | IL 2A Dunlap Sectional(IL), 2012-05-18(#2) |
| B-400 | 69 | 50.13 | Warren, James (2012) (Boylan Catholic, IL) | NIC-10 Boys Conference(IL), 2012-05-11(#1) |
| B-400 | 70 | 50.14 | Davis, James (2012) (Huntley, IL) | IL 3A Hononegah Sectional(IL), 2012-05-17(#4) |
| B-400 | 71 | 50.15 | Kelley, Byron (2013) (Brooks College Prep Academy, IL) | IL 2A Boys State Prelims(IL), 2012-05-25(#11) |
| B-400 | 72 | 50.16 | Gulan, Michael (2012) (Von Steuben Metro Science, IL) | IL 3A Loyola Sectional(IL), 2012-05-17(#1) |
| B-400 | 73 | 50.18 | Burns, Matt (2014) (Willowbrook, IL) | IL 3A Whtn-Wrnvl South Sectional(IL), 2012-05-18(#3) |
| B-400 | 74 | 50.23 | Rivera, Alejando (2012) (Sterling, IL) | IL 2A Rochelle Sectional(IL), 2012-05-17(#3) |
| B-400 | 74 | 50.23 | Warren, Jim (2012) (Boylan Catholic, IL) | IL 2A Rochelle Sectional(IL), 2012-05-17(#2) |
| B-400 | 76 | 50.25 | Tuell, Pierre (2012) (St. Thomas More, IL) | IL 2A Mahomet-Seymour Sectional(IL), 2012-05-17(#1) |
| B-400 | 76 | 50.25 | Falk, Joshua (2012) (Joliet Catholic Academy, IL) | East Suburban Catholic Boys Conference(IL), 2012-05-09(#1) |
| B-400 | 78 | 50.29 | Hunter, Martel (2014) (Monmouth-Roseville, IL) | West Central Conference(IL), 2012-05-04(#1) |
| B-400 | 79 | 50.30 | Cole, James (Belleville West, IL) | Southwest Conference Boys Meet(IL), 2012-05-09(#1) |
| B-400 | 79 | 50.30 | Ameri, Austin (2012) (Waubonsie Valley, IL) | Upstate Eight Boys Valley Division(IL), 2012-05-10(#3) |
| B-400 | 79 | 50.30 | Klamm, Patrick (2013) (Evanston Township, IL) | CSL-South Boys Championship(IL), 2012-05-11(#5) |
| B-400 | 82 | 50.32 | Smith, Sidney (2013) (Woodstock North, IL) | IL 2A Richmond-Burton Sectional (IL), 2012-05-18(#3) |
| B-400 | 82 | 50.32 | Williams, Spencer (2012) (Perspectives Charter, IL) | IL 2A Boys State Prelims(IL), 2012-05-25(#15) |
| B-400 | 84 | 50.34 | Johnson, Devin (2013) (Erie-Prophetstown, IL) | IL 1A State Prelims(IL), 2012-05-24(#2) |
| B-400 | 84 | 50.34 | Johnson, Elijah (Thornton Fractional South, IL) | Race Under the Lights(IL), 2012-05-25(#1) |
| B-400 | 86 | 50.36 | Lewis, Bryant (Bloomington, IL) | Big 12 Boys Conference (IL), 2012-05-11(#2) |
| B-400 | 87 | 50.38 | Story, Trey (2013) (Cahokia, IL) | South 7 Boys Conference(IL), 2012-05-11(#1) |
| B-400 | 88 | 50.40 | Furlong, Connor (2012) (Hinsdale Central, IL) | Bud Mohns Invitational(IL), 2012-04-14(#1) |
| B-400 | 88 | 50.40 | Holliman, Alvin (2012) (Guilford, IL) | Hononegah Boys Triangular(IL), 2012-04-17(#1) |
| B-400 | 88 | 50.40 | Carter, Deon (H L Richards, IL) | Harry McDaniel Classic(IL), 2012-05-03(#2) |
| B-400 | 91 | 50.41 | Trainer, Matt (2012) (Mt. Carmel, IL) | IL 3A St. Ignatius Sectional(IL), 2012-05-17(#4) |
| B-400 | 92 | 50.43 | Giovannelli, Joey (2012) (Glenwood, IL) | Capital Area Classic(IL), 2012-05-14(#1) |
| B-400 | 93 | 50.45 | Abreu, Antonio (2013) (Lane Technical, IL) | Chicago Public League Championships(IL), 2012-05-05(#1) |
| B-400 | 94 | 50.46 | McCormack, Tommy (2013) (Oregon, IL) | IL 1A Winnebago Sectional(IL), 2012-05-18(#2) |
| B-400 | 94 | 50.46 | Crum, Trevor (2012) (Heyworth, IL) | IL 1A State Prelims(IL), 2012-05-24(#5) |
| B-400 | 96 | 50.47 | Gulik, Mike (2012) (Burlington Central, IL) | Big Northern Boys Conference(IL), 2012-05-10(#1) |
| B-400 | 96 | 50.47 | Davis, Garrett (2012) (Crystal Lake Central, IL) | Fox Valley Conf Boys Championships(IL), 2012-05-11(#5) |
| B-400 | 98 | 50.48 | Richard, Juwaan (2013) (Schaumburg, IL) | Saxons Invitational(IL), 2012-04-07(#5) |
| B-400 | 99 | 50.49 | Monigan, Jalon (2014) (Cahokia, IL) | Holt Invitational(MO), 2012-03-31(#2) |
| B-400 | 99 | 50.49 | Gundersen, Ryan (2012) (Rolling Meadows, IL) | Northern Illinois Invitational(IL), 2012-05-04(#1) |
| B-400 | 101 | 50.50 | Steele, Micaiah (2013) (Wheaton North, IL) | DupageValley Conference Boys Championship(IL), 2012-05-11(#2) |
| B-400 | 101 | 50.50 | Conley, Josh (2012) (Argo Community, IL) | Argo Boys Invitational(IL), 2012-04-07(#2) |
| B-400 | 103 | 50.57 | Kasemir, Alex (Highland Park, IL) | IL 3A Boys State Prelims(IL), 2012-05-25(#20) |
| B-400 | 104 | 50.58 | Harrell, Johnathan (2014) (Aurora Christian, IL) | IL 1A Seneca Boys Sectional(IL), 2012-05-18(#1) |
| B-400 | 105 | 50.62 | Milsap, Adam (2014) (Naperville North, IL) | Red Grange Invitational(IL), 2012-04-20(#1) |
| B-400 | 105 | 50.62 | Watson, Jeremiah (2014) (Urban Prep Englewood, IL) | IL 2A Boys State Prelims(IL), 2012-05-25(#16) |
| B-400 | 107 | 50.64 | Hunt, Alex (2013) (Eureka, IL) | Corn Belt Conference(IL), 2012-05-04(#2) |
| B-400 | 107 | 50.64 | Jones, Dayquan (2014) (Rock Island, IL) | Western Big 6 Boys Conference(IL), 2012-05-10(#1) |
| B-400 | 109 | 50.65 | Kucera, Nathaniel (2014) (Kaneland , IL) | IL 2A Rochelle Sectional(IL), 2012-05-17(#4) |
| B-400 | 110 | 50.69 | Wittler, Aaron (2012) (Unity, IL) | West Central Conference(IL), 2012-05-04(#2) |
| B-400 | 111 | 50.70 | Kendziera, Dave (2013) (Prospect, IL) | Prospect Boys Triangular(IL), 2012-04-17(#1) |
| B-400 | 112 | 50.72 | Jones, Daquan (2014) (Rock Island, IL) | Shipley ABC Invitational(IL), 2012-03-31(#2) |
| B-400 | 113 | 50.74 | Horcher, Christian (2012) (Carmel Catholic, IL) | IL 2A Richmond-Burton Sectional (IL), 2012-05-18(#4) |
| B-400 | 113 | 50.74 | Stanley, Drake (2012) (Meridian, IL) | IL 1A Moweaqua Central A&M Boys Sectional(IL), 2012-05-17(#1) |
| B-400 | 115 | 50.75 | Holloway, Anthony (2012) (Manual, IL) | Dragon Invitational(IL), 2012-04-27(#3) |
| B-400 | 115 | 50.75 | Lawrence, John (2014) (ROWVA, IL) | BPCAWP Boys Spartan Invitational(IL), 2012-05-14(#1) |
| B-400 | 117 | 50.77 | Pierce, Irvin (2012) (Hillcrest, IL) | Bill Jackson Invitational(IL), 2012-05-04(#2) |
| B-400 | 118 | 50.79 | Dean, Kerry (Mt. Carmel, IL) | Homewood-Flossmoor Boys Invitational(IL), 2012-04-14(#4) |
| B-400 | 118 | 50.79 | Thomas, Tovari (2013) (J Sterling Morton, IL) | WSC-Gold Boys Conference(IL), 2012-05-11(#1) |
| B-400 | 120 | 50.80 | Hawkins, Vontrel (West Aurora, IL) | Oswego Boys Invitational(IL), 2012-04-27(#1) |
| B-400 | 120 | 50.80 | Rantis, Mike (2012) (Lake Zurich, IL) | Bears Invitational(IL), 2012-04-20(#1) |
| B-400 | 120 | 50.80 | Schiewe, Evan (2012) (Glenbard East, IL) | Pete Reiff Invitational(IL), 2012-05-04(#2) |
| B-400 | 120 | 50.80 | Brennan, Chris (Bolingbrook, IL) | Carlin Nalley Invitational(IL), 2012-05-05(#1) |
| B-400 | 124 | 50.81 | Flamer, Todd (2013) (United Township, IL) | Western Big 6 Boys Conference(IL), 2012-05-10(#2) |
| B-400 | 125 | 50.82 | French, Cyrus (2012) (Larkin, IL) | Mike Vandeever Invitational(IL), 2012-04-14(#2) |
| B-400 | 126 | 50.83 | Meunier, Grayson (2012) (Harry D Jacobs, IL) | Fox Valley Conf Boys Championships(IL), 2012-05-11(#6) |
| B-400 | 126 | 50.83 | Damisch, Ben (Burlington Central, IL) | Big Northern Boys Conference(IL), 2012-05-10(#2) |
| B-400 | 128 | 50.84 | Snider, Gabe (2012) (Whitney Young, IL) | Chicago Public League Championships(IL), 2012-05-05(#2) |
| B-400 | 129 | 50.86 | Ball, Kenny (2012) (Cahokia, IL) | South 7 Boys Conference(IL), 2012-05-11(#2) |
| B-400 | 129 | 50.86 | Spaccapaniccia, Daniel (2014) (Naperville Central, IL) | IL 3A Naperville North Sectional(IL), 2012-05-17(#5) |
| B-400 | 131 | 50.87 | Gullstrand, Jake (2013) (Indian Creek, IL) | IL 1A State Prelims(IL), 2012-05-24(#7) |
| B-400 | 132 | 50.88 | Magee, Christian (Normal Community West, IL) | Big 12 Boys Conference (IL), 2012-05-11(#3) |
| B-400 | 132 | 50.88 | Yarbrough, Keenan (2013) (Limestone Community, IL) | IL 2A Dunlap Sectional(IL), 2012-05-18(#4) |
| B-400 | 134 | 50.89 | Banks, Justin (2010) (Bloom Township, IL) | Winston Brown Invitational(IL), 2012-04-21(#3) |
| B-400 | 134 | 50.89 | Ruff, Matt (2014) (Wheaton Academy, IL) | Suburban Christian Boys Conference(IL), 2012-05-09(#1) |
| B-400 | 134 | 50.89 | Williams, Ahmad (2012) (Normal Community, IL) | IL 3A Belleville West Sectional(IL), 2012-05-18(#4) |
| B-400 | 134 | 50.89 | Carter, Deion (2013) (H L Richards, IL) | IL 3A Boys State Prelims(IL), 2012-05-25(#21) |
| B-400 | 138 | 50.90 | Partipilo, Phil (Addison Trail, IL) | IL 3A Whtn-Wrnvl South Sectional(IL), 2012-05-18(#4) |
| B-400 | 139 | 50.91 | Klamm, Pat (2013) (Evanston Township, IL) | Red Grange Invitational(IL), 2012-04-20(#2) |
| B-400 | 139 | 50.91 | Burks, Frederick (2014) (Proviso East, IL) | WSC-Gold Boys Conference(IL), 2012-05-11(#2) |
| B-400 | 141 | 50.92 | Nissen, Nick (2012) (Prairie Ridge, IL) | Fox Valley Conf Boys Championships(IL), 2012-05-11(#7) |
| B-400 | 142 | 50.94 | Simmonds, Nick (2013) (Belleville West, IL) | IL 3A Belleville West Sectional(IL), 2012-05-18(#5) |
| B-400 | 143 | 50.95 | Thomas, Darius (2013) (Macomb, IL) | West Central Conference(IL), 2012-05-04(#3) |
| B-400 | 144 | 50.96 | Askew, Jwauhn (2014) (East St. Louis-Senior, IL) | IL 3A Belleville West Sectional(IL), 2012-05-18(#6) |
| B-400 | 145 | 50.97 | Confer, Riggie (Seton Academy, IL) | IL 1A Chicago University Sectional(IL), 2012-05-17(#2) |
| B-400 | 146 | 50.98 | Middlebrooks, Lazyrick (2013) (Bulls College Prep, IL) | IL 2A Marshall Sectional(IL), 2012-05-17(#1) |
| B-400 | 146 | 50.98 | Lewis, Kendrick (2013) (East St. Louis-Senior, IL) | Southwest Conference Boys Meet(IL), 2012-05-09(#2) |
| B-400 | 146 | 50.98 | Haldeman, Mike (2012) (Lockport Township , IL) | SWSC Blue Boys Conference(IL), 2012-05-10(#1) |
| B-400 | 149 | 50.99 | Hall, Nathan (2013) (Glenbard West, IL) | WSC-Silver Boys Conference(IL), 2012-05-11(#3) |
| B-400 | 149 | 50.99 | Irvin, Robbie (2012) (Hoopeston Area, IL) | Mahomet-Seymour Invitational(IL), 2012-05-12(#2) |
| B-400 | 151 | 51.00 | Adeboyejo, Will (Homewood-Flossmoor, IL) | Warrior Invitational(IL), 2012-04-27(#1) |
| B-400 | 151 | 51.00 | Chupp, Matthew (2013) (Mahomet-Seymour, IL) | Mahomet-Seymour Invitational(IL), 2012-05-12(#3) |
| B-400 | 151 | 51.00 | Mckinnies, Tyrell (2012) (Carbondale Comm, IL) | South 7 Boys Conference(IL), 2012-05-11(#3) |
| B-400 | 154 | 51.03 | Boss, Steven (2013) (Mount Vernon, IL) | IL 2A Mascoutah Sectional(IL), 2012-05-18(#4) |
| B-400 | 155 | 51.05 | Oshipitian, Abraham (Thornwood, IL) | Homewood-Flossmoor Boys Invitational(IL), 2012-04-14(#5) |
| B-400 | 155 | 51.05 | Prasak, Pat (Addison Trail, IL) | WSC-Gold Boys Conference(IL), 2012-05-11(#2) |
| B-400 | 157 | 51.06 | Schafer, Kyle (2012) (Waubonsie Valley, IL) | Gus Scott Invitational(IL), 2012-04-13(#1) |
| B-400 | 158 | 51.08 | Locicero, Zach (York Community, IL) | Bud Mohns Invitational(IL), 2012-04-14(#2) |
| B-400 | 159 | 51.09 | Wiley, Charlie (2012) (Kenwood Academy, IL) | Race Under the Lights(IL), 2012-05-25(#3) |
| B-400 | 160 | 51.12 | Wells, Randall (Marian Catholic, IL) | East Suburban Catholic Boys Conference(IL), 2012-05-09(#2) |
| B-400 | 161 | 51.16 | Jones, David (2012) (Andrew, IL) | Bud Mohns Invitational(IL), 2012-04-14(#3) |
| B-400 | 162 | 51.18 | Henderson, Cole (2014) (Pekin Community, IL) | Mid Illini Boys Conference(IL), 2012-05-08(#2) |
| B-400 | 163 | 51.19 | Jackson, Ben (2013) (United Township, IL) | Western Big 6 Boys Conference(IL), 2012-05-10(#3) |
| B-400 | 164 | 51.20 | Skrip, Kevin (2012) (Neuqua Valley, IL) | Metea Valley Invitational(IL), 2012-04-14(#3) |
| B-400 | 164 | 51.20 | White, Verne (2012) (Chester, IL) | Buzz Bradley Invitational(IL), 2012-04-20(#1) |
| B-400 | 164 | 51.20 | Haines, Tyler (Naperville Central, IL) | DupageValley Conference Boys Championship(IL), 2012-05-11(#4) |
| B-400 | 167 | 51.22 | Lenzini, David (2014) (Crystal Lake Central, IL) | IL 3A Hononegah Sectional(IL), 2012-05-17(#6) |
| B-400 | 167 | 51.22 | Blievernicht, Kyle (2014) (Teutopolis, IL) | IL 1A Lawrenceville Boys Sectional(IL), 2012-05-18(#1) |
| B-400 | 169 | 51.23 | Stevens, Nyle (2013) (Rockridge, IL) | IL 1A State Prelims(IL), 2012-05-24(#12) |
| B-400 | 170 | 51.25 | Sparks, D.J. (2012) (Triad, IL) | Collinsville Invitational(IL), 2012-05-05(#6) |
| B-400 | 170 | 51.25 | Henning, Joshua (2014) (Springfield Lutheran, IL) | IL 1A Lewistown Sectional(IL), 2012-05-18(#1) |
| B-400 | 172 | 51.26 | Arguelles, Francisco (2013) (Granite City, IL) | IL 3A Belleville West Sectional(IL), 2012-05-18(#8) |
| B-400 | 173 | 51.27 | Callahan, Patrick (2014) (Hinsdale Central, IL) | WSC-Silver Boys Conference(IL), 2012-05-11(#1) |
| B-400 | 173 | 51.27 | Smith, Justin (2012) (Payton College Preparatory, IL) | IL 3A St. Ignatius Sectional(IL), 2012-05-17(#5) |
| B-400 | 175 | 51.28 | Leon, Richard (2013) (Maine West, IL) | IL 3A Loyola Sectional(IL), 2012-05-17(#3) |
| B-400 | 176 | 51.30 | Dwyer, Dan (209) (St. Rita, IL) | Hawk Classic(IL), 2012-04-05(#2) |
| B-400 | 176 | 51.30 | Brown, Justin (Marion, IL) | IL 2A Mascoutah Sectional(IL), 2012-05-18(#5) |
| B-400 | 176 | 51.30 | McKenzie, Marvin (2015) (Riverside-Brookfield, IL) | Carlin Nalley Invitational(IL), 2012-05-05(#3) |
| B-400 | 179 | 51.31 | Roche, Matt (2013) (Moline, IL) | Western Big 6 Boys Conference(IL), 2012-05-10(#4) |
| B-400 | 180 | 51.32 | Reading, Carter (2012) (St. Charles East, IL) | John Bell Invitational(IL), 2012-04-14(#5) |
| B-400 | 180 | 51.32 | Filipiak, Matt (2012) (Lincoln-Way North, IL) | IL 3A Homewood-Flossmoor Sectional(IL), 2012-05-17(#3) |
| B-400 | 182 | 51.33 | Horton, Grayson (2013) (Joliet Catholic Academy, IL) | East Suburban Catholic Boys Conference(IL), 2012-05-09(#3) |
| B-400 | 183 | 51.34 | Ooms, Joel (2012) (Illiana Christian, IL) | Chicago Christian Invitational(IL), 2012-04-27(#1) |
| B-400 | 184 | 51.35 | Soderstrom, Ron (2012) (Schlarman, IL) | IL 1A Monticello Boys Sectional(IL), 2012-05-18(#2) |
| B-400 | 185 | 51.36 | Gardner, Keith (2013) (East St. Louis-Senior, IL) | St. Clair County Meet(IL), 2012-04-24(#2) |
| B-400 | 185 | 51.36 | Hill, Michael (2014) (Hononegah, IL) | IL 3A Hononegah Sectional(IL), 2012-05-17(#7) |
| B-400 | 187 | 51.37 | Dieudonne, Matt (Homewood-Flossmoor, IL) | Rock Island ABC Invitational(IL), 2012-04-20(#2) |
| B-400 | 188 | 51.38 | Roberts, Derek (2014) (Hinsdale Central, IL) | WSC-Silver Boys Conference(IL), 2012-05-11(#2) |
| B-400 | 189 | 51.39 | Hokanson, Cody (Tinley Park, IL) | IL 3A Homewood-Flossmoor Sectional(IL), 2012-05-17(#4) |
| B-400 | 190 | 51.40 | Hollendonner, Ian (Carl Sandburg, IL) | Hawk Classic(IL), 2012-04-05(#3) |
| B-400 | 190 | 51.40 | Shull, (Belleville East, IL) | Belleville City Meet(IL), 2012-04-18(#1) |
| B-400 | 190 | 51.40 | Heer, Derek (Rolling Meadows, IL) | MSL East Boys Divisional Meet(IL), 2012-04-24(#3) |
| B-400 | 190 | 51.40 | Lee, Ethan (2012) (Latin, IL) | St. Ignatius Invitational #2(IL), 2012-04-25(#1) |
| B-400 | 190 | 51.40 | Prasek, Pat (Addison Trail, IL) | Ron Gummerson Classic(IL), 2012-05-04(#1) |
| B-400 | 190 | 51.40 | Harriel, James (2014) (Bloom Township, IL) | SAC Boys Championship(IL), 2012-05-09(#1) |
| B-400 | 190 | 51.40 | Echt, Nate (Highland Park, IL) | CSL - North Boys Championship(IL), 2012-05-11(#2) |
| B-400 | 197 | 51.42 | Collins, Pierre (Belleville East, IL) | Belleville West Invitational(IL), 2012-04-06(#7) |
| B-400 | 198 | 51.43 | Holm, Josh (2012) (McHenry, IL) | Fox Valley Conf Boys Championships(IL), 2012-05-11(#9) |
| B-400 | 199 | 51.46 | Hunter, Derek (Mount Vernon, IL) | Orphan Relays(IL), 2012-04-18(#1) |
| B-400 | 199 | 51.46 | Kemp, Alex (2012) (Tuscola, IL) | IL 1A Moweaqua Central A&M Boys Sectional(IL), 2012-05-17(#2) |
| B-400 | 199 | 51.46 | Garcia, Julius (2013) (Neuqua Valley, IL) | Upstate Eight Boys Valley Division(IL), 2012-05-10(#6) |
| B-400 | 199 | 51.46 | Banks, Justin (Bloom Township, IL) | IL 3A Homewood-Flossmoor Sectional(IL), 2012-05-17(#5) |
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