| Event | Rank | Mark | By | Meet |
| G-400 | 201 | 1:01.70 | Martens, Jamie (2018) (Kaneland , IL) | Fricke Girls ABC Invitational(IL), 2015-04-17(#2) |
| G-400 | 201 | 1:01.70 | Freed, Gabby (2016) (Lexington, IL) | IL 1A Heyworth Girls Sectional(IL), 2015-05-14(#1) |
| G-400 | 203 | 1:01.72 | Pola, Nadine (Schaumburg, IL) | IL 3A St. Charles North Girls Sectional(IL), 2015-05-15(#8) |
| G-400 | 204 | 1:01.73 | Barnhart, Megan (2017) (Sterling, IL) | Rock Island Girls ABC Invitational(IL), 2015-04-18(#4) |
| G-400 | 205 | 1:01.74 | Schackelton, Valarie (2017) (Schaumburg, IL) | WWS Girls Tiger Invitational(IL), 2015-05-01(#10) |
| G-400 | 206 | 1:01.77 | Devries, Carmen (2018) (Lena-Winslow, IL) | Byron Girls Invitational(IL), 2015-04-23(#1) |
| G-400 | 206 | 1:01.77 | Mendez, Cindy (2016) (West Chicago, IL) | Upstate Eight Girls Conference Meet(IL), 2015-05-07(#13) |
| G-400 | 206 | 1:01.77 | Meyers, Katrina (2017) (Hononegah, IL) | WWS Girls Tiger Invitational(IL), 2015-05-01(#11) |
| G-400 | 209 | 1:01.78 | Valdez, Alicia (2015) (Charleston, IL) | IL 2A Clinton Girls Sectional(IL), 2015-05-14(#3) |
| G-400 | 210 | 1:01.79 | Schlebecker, Megan (Mundelein Cons, IL) | North Suburban Girls Conference Meet(IL), 2015-05-07(#6) |
| G-400 | 211 | 1:01.80 | Mickens, Aliyah (2017) (Homewood-Flossmoor, IL) | Rock Island Girls ABC Invitational(IL), 2015-04-18(#5) |
| G-400 | 212 | 1:01.81 | Beine, Mary (2015) (Downers Grove South, IL) | WWS Girls Tiger Invitational(IL), 2015-05-01(#12) |
| G-400 | 212 | 1:01.81 | Kroll, Lauren (2017) (Addison Trail, IL) | DuPage Track Invitational(IL), 2015-07-18(#2) |
| G-400 | 212 | 1:01.81 | Jachimiec, Grace (2016) (Metea Valley, IL) | Upstate Eight Girls Conference Meet(IL), 2015-05-07(#15) |
| G-400 | 215 | 1:01.82 | Collier, Kristen (2017) (Freeburg Community, IL) | Cahokia Conference Championships(IL), 2015-05-06(#2) |
| G-400 | 215 | 1:01.82 | Armstrong, Kayla (Luther North, IL) | Northeastern Athletic Conference Championships(IL), 2015-05-09(#1) |
| G-400 | 215 | 1:01.82 | Richter, Abigail (2016) (Triad, IL) | O'Fallon Girls Invitational(IL), 2015-04-17(#2) |
| G-400 | 218 | 1:01.83 | Hernandez, Nicki (2017) (Metea Valley, IL) | Upstate Eight Girls Conference Meet(IL), 2015-05-07(#16) |
| G-400 | 219 | 1:01.86 | Zacharias, Morgan (2015) (Reed-Custer, IL) | Seneca Irish Invitational(IL), 2015-04-17(#2) |
| G-400 | 220 | 1:01.90 | Bryja, Ashley (2017) (Mother McAuley, IL) | Lincoln-Way C Lady Knights Invitational(IL), 2015-04-11(#3) |
| G-400 | 220 | 1:01.90 | Smith, Blessed (2017) (Macomb, IL) | PJS Honor Roll Meet(IL), 2015-05-26(#5) |
| G-400 | 220 | 1:01.90 | Katz, Lauren (2018) (Vernon Hills, IL) | USATF Youth National Championships 15-16(IL), 2015-07-05(#14) |
| G-400 | 223 | 1:01.91 | Washington, Deja (2015) (Perspectives Charter, IL) | CPS Girls Varsity Trials(IL), 2015-05-05(#7) |
| G-400 | 224 | 1:01.92 | Biegalski, Cailyn (2018) (Glenbard East, IL) | Glenbard East Girls Rams Invitational(IL), 2015-04-24(#1) |
| G-400 | 224 | 1:01.92 | Dunah, Kardia (Oswego, IL) | AAU JO Region 13 Qualifier(IL), 2015-07-05(#8) |
| G-400 | 226 | 1:01.93 | Green, Atlexus (2018) (Carbondale Comm, IL) | O'Fallon Girls Invitational(IL), 2015-04-17(#3) |
| G-400 | 226 | 1:01.93 | Perrin, Lilian (2015) (Niles North, IL) | CSL-North Girls Conference Meet(IL), 2015-05-07(#3) |
| G-400 | 228 | 1:01.94 | Cropsey, Lauren (2015) (Barrington, IL) | Homewood-Flossmoor Girls Invitational(IL), 2015-04-11(#1) |
| G-400 | 228 | 1:01.94 | Laudizio, Anna (2016) (Plainfield North, IL) | Jane Dickens Invitational(IL), 2015-06-20(#9) |
| G-400 | 230 | 1:01.95 | Anderson, Becca (2015) (Clinton, IL) | Bloomington Lady Raider Invitational, 2015-04-17(#8) |
| G-400 | 230 | 1:01.95 | Evelti, Lauren (2016) (St. Teresa, IL) | Macon County Championship(IL), 2015-04-28(#1) |
| G-400 | 232 | 1:01.97 | Kelly, Kniyah (Bloomington, IL) | Bloomington Honor Roll Meet(IL), 2015-05-26(#4) |
| G-400 | 232 | 1:01.97 | Yakesh, Jenna (2017) (Oswego, IL) | IL 3A Naperville North Girls Sectional(IL), 2015-05-14(#8) |
| G-400 | 232 | 1:01.97 | Lopez, Gianna (2018) (Lemont, IL) | IL 3A Downers Grove North Girls Sectional(IL), 2015-05-14(#6) |
| G-400 | 235 | 1:02.00 | Strike, Heather (2015) (Erie-Prophetstown, IL) | Rockridge Girls Invitational(IL), 2015-04-16(#3) |
| G-400 | 235 | 1:02.00 | Terry, Erica (2015) (Lakes, IL) | D117 Girls Invitational(IL), 2015-04-23(#1) |
| G-400 | 235 | 1:02.00 | Forlines, Abby (2017) (Central A & M, IL) | Central Illinois Girls Conference Meet(IL), 2015-05-09(#2) |
| G-400 | 235 | 1:02.00 | Tunink, Kirsten (2018) (Sterling Newman, IL) | IL 1A Bureau Valley Girls Sectional(IL), 2015-05-15(#2) |
| G-400 | 235 | 1:02.00 | Krawl, Emily (2016) (Winchester, IL) | IL 1A Rushville-Industry Girls Sectional(IL), 2015-05-14(#1) |
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