| Event | Rank | Mark | By | Meet |
| | | National Elites above. State Elites below | | |
| G-400 | 1 | 57.39 | Rhea, Katelyn (2014) (Camp Point Central, IL) | IL 1A Girls State Finals(IL), 2014-05-24(#2) |
| G-400 | 2 | 58.04 | Keith, Sophie (2016) (Pinckneyville Comm, IL) | Don Webb Invitational(IL), 2014-04-21(#1) |
| G-400 | 3 | 58.21 | Marry, Miranda (2014) (Fisher, IL) | Bloomington Honor Roll Meet(IL), 2014-05-27(#1) |
| G-400 | 4 | 58.30 | Mundekis, Cassie (2015) (Midwest Central, IL) | PJS Honor Roll Meet(IL), 2014-05-27(#3) |
| G-400 | 5 | 58.49 | Stuedemann, Willow (2016) (Seneca, IL) | IL 1A Girls State Finals(IL), 2014-05-24(#4) |
| G-400 | 6 | 59.23 | Holland, Tessa (2015) (Fieldcrest, IL) | IL 1A Girls State Prelims(IL), 2014-05-22(#5) |
| G-400 | 7 | 59.38 | Rhodes, Rachel (2014) (Williamsville, IL) | IL 1A Girls State Prelims(IL), 2014-05-22(#6) |
| G-400 | 8 | 59.40 | Kereta, Amanda (2015) (Henry-Senachwine, IL) | IL 1A Girls State Finals(IL), 2014-05-24(#8) |
| G-400 | 9 | 59.81 | Reed, Megan (2016) (Cambridge, IL) | IL 1A Girls State Prelims(IL), 2014-05-22(#10) |
| G-400 | 10 | 59.89 | Sparrgrove, Jorji (2015) (Central A & M, IL) | IL 1A Girls State Prelims(IL), 2014-05-22(#11) |
| G-400 | 11 | 1:00.00 | Pace, Andrea (2017) (Clifton Central, IL) | Herscher Invitational(IL), 2014-05-02(#1) |
| G-400 | 12 | 1:00.70 | Staley, Jessica (2015) (Flora, IL) | IL 1A Lawrenceville Girls Sectional(IL), 2014-05-15(#1) |
| G-400 | 13 | 1:01.13 | Helton, Charlene (2016) (Marquette, IL) | Rochester Invitational(IL), 2014-04-26(#2) |
| G-400 | 14 | 1:01.45 | Jackson, Maddie (2014) (Wethersfield, IL) | IL 1A Girls State Prelims(IL), 2014-05-22(#14) |
| G-400 | 15 | 1:01.66 | Weichman, Megan (2015) (Teutopolis, IL) | IL 1A Lawrenceville Girls Sectional(IL), 2014-05-15(#2) |
| G-400 | 16 | 1:01.73 | Paslay, Jalea (2016) (Vandalia Community, IL) | IL 1A Girls State Prelims(IL), 2014-05-22(#15) |
| G-400 | 17 | 1:01.74 | Bone, Emily (2016) (Brownstown, IL) | National Trail Co-Ed Conference Meet(IL), 2014-05-06(#1) |
| G-400 | 18 | 1:01.80 | Jenkins, Lauren (Southwestern, IL) | Rochester Invitational(IL), 2014-04-26(#3) |
| G-400 | 19 | 1:01.81 | Grisham, Miranda (2014) (Milledgeville, IL) | IL 1A Byron Girls Sectional(IL), 2014-05-16(#1) |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | See more performances for G-400 | | |
