| Event | Rank | Mark | By | Meet |
| B-1600 | 601 | 4:43.86 | Kuehl, Brian (2017) (Geneva, IL) | Roger Wilcox Invitational(IL), 2015-05-01(#7) |
| B-1600 | 601 | 4:43.86 | Morrow, Ethan (Mercer County, IL) | IL 1A Farmington Boys Sectional(IL), 2015-05-22(#7) |
| B-1600 | 603 | 4:43.87 | Tuman, Anthony (2017) (Whitney Young, IL) | Lane Tech Boys Quintangular(IL), 2015-04-16(#3) |
| B-1600 | 604 | 4:43.93 | Lomeli, Miguel (2016) (Minooka Community, IL) | Minooka Boys Quad(IL), 2015-04-30(#3) |
| B-1600 | 604 | 4:43.93 | Simon, Jackson (2016) (Oswego, IL) | Roger Wilcox Invitational(IL), 2015-05-01(#8) |
| B-1600 | 606 | 4:43.95 | Ridderhoff, Jacob (2018) (Downers Grove North, IL) | WSC-Silver Boys Conference Meet(IL), 2015-05-16(#6) |
| B-1600 | 607 | 4:43.99 | Douglas, Robert (2016) (Streamwood, IL) | Upstate Eight Boys Conference Meet(IL), 2015-05-14(#12) |
| B-1600 | 608 | 4:44.00 | Volk, Ethan (2016) (Rockford Christian, IL) | Mike Mowen Invitational(IL), 2015-05-08(#3) |
| B-1600 | 609 | 4:44.01 | Phillips, Justin (2017) (St. Joseph-Ogden, IL) | IL 1A St. Joseph-Ogden Boys Sectional(IL), 2015-05-22(#6) |
| B-1600 | 610 | 4:44.10 | Powell, Jackson (2015) (Mahomet-Seymour, IL) | Gene Ward Invitational(IL), 2015-05-01(#13) |
| B-1600 | 611 | 4:44.15 | Joda, Jason (2017) (Lake Park, IL) | IL 3A York Boys Sectional(IL), 2015-05-22(#14) |
| B-1600 | 612 | 4:44.16 | Taylor, Nathan (2015) (Whitney Young, IL) | NIB-12 Boys Conference Meet(IL), 2015-05-15(#3) |
| B-1600 | 613 | 4:44.18 | Villanova, Peter (2017) (Naperville Central, IL) | Metea Valley Boys Invitational(IL), 2015-04-18(#2) |
| B-1600 | 614 | 4:44.20 | Kieffer, Lucas (2015) (Elmwood Park, IL) | Leyden Big Bear Invitational(IL), 2015-04-16(#5) |
| B-1600 | 614 | 4:44.20 | Sieger, Jordan (2017) (Shelbyville, IL) | Tuscola F/S Invitational(IL), 2015-05-04(#1) |
| B-1600 | 616 | 4:44.22 | Dunn, Tyler (2018) (Normal Community West, IL) | Lanphier Boys Invitational(IL), 2015-04-25(#1) |
| B-1600 | 617 | 4:44.26 | Gunter, Ryan (2015) (Civic Memorial, IL) | IL 2A Lanphier Boys Sectional(IL), 2015-05-22(#6) |
| B-1600 | 618 | 4:44.30 | Pagan, Chris (2015) (Oswego, IL) | Waubonsie Valley - Oswego Boys Dual(IL), 2015-04-11(#3) |
| B-1600 | 619 | 4:44.50 | Hillegass, Alex (2016) (Normal Community West, IL) | Lanphier Boys Invitational(IL), 2015-04-25(#5) |
| B-1600 | 620 | 4:44.56 | Black, Patrick (2018) (Yorkville, IL) | NIB-12 Boys Conference Meet(IL), 2015-05-15(#4) |
| B-1600 | 621 | 4:44.60 | Lopez, Eduardo (2016) (Rantoul, IL) | Mahomet-Seymour Boys Invitational(IL), 2015-05-16(#8) |
| B-1600 | 622 | 4:44.68 | Kilby, James (2016) (Monticello, IL) | Piatt-Macon County Invitational(IL), 2015-04-21(#1) |
| B-1600 | 623 | 4:44.70 | Gerardi, Dan (2016) (John Hersey, IL) | Travis ABC Invitational(IL), 2015-04-24(#3) |
| B-1600 | 624 | 4:44.71 | Poorten, Stephen (2018) (Sycamore, IL) | Northern Illinois Invitational(IL), 2015-05-08(#1) |
| B-1600 | 625 | 4:44.73 | Isla, Lucas (2016) (Bartlett, IL) | Schaumburg Mikias Tibebu Invitational(IL), 2015-04-11(#8) |
| B-1600 | 626 | 4:44.76 | Kinley, Glenn (2017) (Normal Community West, IL) | Bloomington/Normal Intercity Classic(IL), 2015-04-28(#6) |
| B-1600 | 627 | 4:44.77 | Melone, Tommy (2016) (Crystal Lake South, IL) | IL 3A Guilford Boys Sectional(IL), 2015-05-21(#15) |
| B-1600 | 628 | 4:44.78 | Rodriguez, Leonel (2015) (Fenton, IL) | IL 3A York Boys Sectional(IL), 2015-05-22(#15) |
| B-1600 | 629 | 4:44.84 | Przeslicke, Matt (2015) (Evergreen Park, IL) | Chicago Christian Invitational(IL), 2015-05-01(#3) |
| B-1600 | 630 | 4:44.86 | Bicknell, Austin (2018) (Bloomington, IL) | Big 12 Boys F/S Conference Meet(IL), 2015-05-09(#3) |
| B-1600 | 631 | 4:44.89 | Mullen, Riley (2016) (Fenwick, IL) | Chicago Catholic League Championships(IL), 2015-05-16(#11) |
| B-1600 | 631 | 4:44.89 | Zacharius, Matt (Normal University, IL) | Bloomington/Normal Intercity Classic(IL), 2015-04-28(#1) |
| B-1600 | 633 | 4:44.99 | Thomas, Harrison (2016) (Carterville, IL) | Southern Illinois River to River Boys Conference Meet(IL), 2015-05-14(#2) |
| B-1600 | 634 | 4:45.00 | Jortberg, Matt (2018) (Glenbrook South, IL) | CSL-South Boys Conference Meet(IL), 2015-05-15(#3) |
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