| Event | Rank | Mark | By | Meet |
| | | National Elites above. State Elites below | | |
| G-400 | 1 | 58.66 | Brown, Daijah (2018) (Plainfield South, IL) | Illinois Top Times Championships - Class 3A(IL), 2015-03-28(#4) |
| G-400 | 2 | 59.78 | Young, Amira (2018) (Whitney Young, IL) | Chicago U-High Meet #3(IL), 2015-03-13(#1) |
| G-400 | 3 | 1:00.28 | McClinton, Kyanna (2018) (St. Charles East, IL) | Illinois Top Times Championships - Class 3A(IL), 2015-03-28(#10) |
| G-400 | 4 | 1:00.35 | Flammersfeld, Abby (2018) (Oswego East, IL) | Pete Heimsath Invitational(IL), 2015-03-07(#1) |
| G-400 | 5 | 1:00.40 | Ortiz, Tori (2018) (Batavia, IL) | Upstate Eight Girls Indoor Conference Meet(IL), 2015-03-21(#4) |
| G-400 | 6 | 1:00.51 | Keyes, Likkaya (2018) (Morgan Park, IL) | Whitney Young Fast Times Girls Invitational(IL), 2015-03-28(#1) |
| G-400 | 7 | 1:01.25 | Silge, Emily (2018) (Carmel Catholic, IL) | Illinois Top Times Championships - Class 2A(IL), 2015-03-28(#9) |
| G-400 | 8 | 1:01.68 | Devries, Carmen (2018) (Lena-Winslow, IL) | Tri-State Invitational(WI), 2015-03-21(#1) |
| G-400 | 9 | 1:01.71 | Cashdollar, Lorie (2018) (Edwardsville, IL) | Charleston EIU Girls Invitational - Large Schools(IL), 2015-03-14(#4) |
| G-400 | 10 | 1:01.75 | Stanley, Rokelle (2018) (East St. Louis-Senior, IL) | Proviso East Lady Pirates Invitational(IL), 2015-03-14(#1) |
| G-400 | 11 | 1:01.90 | Fisher, Cameryn (2018) (Proviso West, IL) | Proviso West Lady Panther Invitational(IL), 2015-03-07(#1) |
| G-400 | 12 | 1:02.45 | Martens, Jamie (2018) (Kaneland , IL) | NIB-12 Indoor Conference Meet(IL), 2015-03-21(#2) |
| G-400 | 13 | 1:02.73 | Gliwa, Grace (2018) (Lockport Township , IL) | Southwest Suburban Girls Indoor Conference Meet(IL), 2015-03-20(#6) |
| G-400 | 14 | 1:02.86 | Ford, Jade (2018) (Moline, IL) | Sterling Indoor Invitational(IL), 2015-03-28(#1) |
| G-400 | 15 | 1:03.08 | Hendrickson, Marguerite (2018) (St. Thomas More, IL) | Urbana Uni Meet #2(IL), 2015-02-25(#1) |
| G-400 | 16 | 1:03.18 | Wiedacher, Jenna (2018) (Montini Catholic, IL) | GCAC Indoor Championships(IL), 2015-03-21(#8) |
| G-400 | 17 | 1:03.27 | Elder, Sabrina (2018) (Belvidere North, IL) | Rockford Auburn Girls Invitational #2(IL), 2015-03-07(#1) |
| G-400 | 18 | 1:03.34 | Centeno, Maggy (2018) (Schaumburg, IL) | Mid Suburban League Indoor Championships(IL), 2015-03-21(#5) |
| G-400 | 19 | 1:03.73 | Day, Savanah (2018) (Tolono Unity, IL) | Urbana Uni Meet #4(IL), 2015-03-18(#1) |
| G-400 | 20 | 1:04.06 | Vaccaro, Racheal (2018) (Schaumburg, IL) | Mid Suburban League Indoor Championships(IL), 2015-03-21(#7) |
| G-400 | 21 | 1:04.10 | Lasley, Asia (2018) (Evanston Township, IL) | Whitney Young Fast Times Girls Invitational(IL), 2015-03-28(#3) |
| G-400 | 22 | 1:04.11 | Georgieff, Sarah (2018) (Dunlap, IL) | Galesburg Silver Streak Invitational(IL), 2015-03-21(#4) |
| G-400 | 23 | 1:04.23 | Mirande, Jenna (2018) (Limestone Community, IL) | Clinton Last Chance Invitational(IL), 2015-03-21(#6) |
| G-400 | 24 | 1:04.29 | Williams, Lauren (2018) (St. Charles East, IL) | Upstate Eight Girls Indoor Conference Meet(IL), 2015-03-21(#1) |
| G-400 | 25 | 1:04.32 | Jackson, Nya (2018) (David Speer Academy, IL) | CPS Indoor Meet - Group C(IL), 2015-03-22(#1) |
| G-400 | 26 | 1:04.36 | Youngblood, Kennedy (2018) (Wheaton-Warrenville South, IL) | DuPage Valley Girls Indoor Conference Meet(IL), 2015-03-19(#4) |
| G-400 | 27 | 1:04.45 | Mack, Alexandra (2018) (Orion, IL) | Illinois Top Times Championships - Class 1A(IL), 2015-03-27(#15) |
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| | | See more performances for G-400 | | |
