| Event | Rank | Mark | By | Meet |
| | | National Elites above. State Elites below | | |
| G-300H | 1 | 44.87 | Pierre-Antoine, Alexis (2016) (Lincoln-Way East, IL) | IL 3A Girls State Prelims(IL), 2015-05-22(#6) |
| G-300H | 2 | 46.23 | Robinson, Mya (2017) (Thornton Township, IL) | SWSC-Red Girls Conference Meet(IL), 2015-05-07(#1) |
| G-300H | 3 | 46.35 | Martinsen, Emily (2017) (Lincoln-Way Central, IL) | SWSC-Red Girls Conference Meet(IL), 2015-05-07(#2) |
| G-300H | 4 | 47.61 | Raehsler, Ashley (2015) (Lincoln-Way Central, IL) | IL 3A Homewood-Flossmoor Girls Sectional(IL), 2015-05-14(#6) |
| G-300H | 5 | 48.30 | Hetzler, Lauren (2016) (Carl Sandburg, IL) | Palatine Relays(IL), 2015-05-02(#8) |
| G-300H | 6 | 48.37 | DeJulius, Katie (2018) (Lincoln-Way East, IL) | IL 3A Homewood-Flossmoor Girls Sectional(IL), 2015-05-14(#8) |
| G-300H | 7 | 49.17 | Hobbs, Jalyn (2016) (Lincoln-Way Central, IL) | Minooka Girls Invitational(IL), 2015-04-17(#3) |
| G-300H | 8 | 49.21 | Anthony, Briana (Thornton Township, IL) | IL 3A Homewood-Flossmoor Girls Sectional(IL), 2015-05-14(#10) |
| G-300H | 9 | 49.66 | Zednick, Madison (2017) (Lincoln-Way East, IL) | IL 3A Homewood-Flossmoor Girls Sectional(IL), 2015-05-14(#11) |
| G-300H | 10 | 49.72 | Elston, Alexis (Thornridge, IL) | IL 2A Kankakee Girls Sectional(IL), 2015-05-14(#4) |
| G-300H | 11 | 49.81 | Hasik, Julia (Bradley-Bourbonnais, IL) | SWSC-Red Girls Conference Meet(IL), 2015-05-07(#4) |
| G-300H | 12 | 49.85 | Osabuohien, Sophia (Homewood-Flossmoor, IL) | IL 3A Homewood-Flossmoor Girls Sectional(IL), 2015-05-14(#12) |
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| | | See more performances for G-300H | | |
