| Event | Rank | Mark | By | Meet |
| | | National Elites above. State Elites below | | |
| G-400 | 1 | 58.95 | Mundekis, Cassie (2015) (Midwest Central, IL) | Arkansas HS Invitational(AR), 2015-01-17(#15) |
| G-400 | 2 | 1:01.10 | Miller, Cherree (2016) (Chester, IL) | Illinois Top Times Championships - Class 1A(IL), 2015-03-27(#4) |
| G-400 | 3 | 1:01.23 | Reed, Megan (2016) (Cambridge, IL) | Illinois Top Times Championships - Class 1A(IL), 2015-03-27(#5) |
| G-400 | 4 | 1:01.50 | Carlson, Annie (2016) (Westmont, IL) | Illinois Top Times Championships - Class 1A(IL), 2015-03-27(#6) |
| G-400 | 5 | 1:01.68 | Devries, Carmen (2018) (Lena-Winslow, IL) | Tri-State Invitational(WI), 2015-03-21(#1) |
| G-400 | 6 | 1:01.79 | Burnett, Teal (2015) (Marshall, IL) | Illinois Top Times Championships - Class 1A(IL), 2015-03-27(#7) |
| G-400 | 7 | 1:02.06 | Wagenbach, Bethany (Tremont, IL) | Charleston EIU Girls Invitational - Small Schools(IL), 2015-03-14(#2) |
| G-400 | 8 | 1:02.20 | Kereta, Amanda (2015) (Henry-Senachwine, IL) | Bureau Valley Invitational #2(IL), 2015-03-12(#1) |
| G-400 | 9 | 1:02.24 | Sparrgrove, Jorji (2015) (Central A & M, IL) | Illinois Top Times Championships - Class 1A(IL), 2015-03-27(#8) |
| G-400 | 10 | 1:02.26 | Helton, Charlene (2016) (Marquette, IL) | Clinton Last Chance Invitational(IL), 2015-03-21(#3) |
| G-400 | 11 | 1:02.38 | Pace, Andrea (2017) (Clifton Central, IL) | ISU HS Invitational(IL), 2015-03-07(#1) |
| G-400 | 12 | 1:02.75 | Bush, Estella (2015) (Jamaica, IL) | Clinton Last Chance Invitational(IL), 2015-03-21(#4) |
| G-400 | 13 | 1:02.99 | Bristow, Elizabeth (2015) (St. Thomas More, IL) | Gene Armer Invitational(IL), 2015-03-21(#11) |
| G-400 | 14 | 1:03.08 | Hendrickson, Marguerite (2018) (St. Thomas More, IL) | Urbana Uni Meet #2(IL), 2015-02-25(#1) |
| G-400 | 15 | 1:03.28 | Shellhorn, Kelsey (2016) (Winnebago, IL) | Byron Last Chance Meet(IL), 2015-03-23(#1) |
| G-400 | 16 | 1:04.27 | Harrod, Audrey (2017) (Hinckley-Big Rock, IL) | AAU Northern Indoor Championships(IL), 2015-01-18(#12) |
| G-400 | 17 | 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 | | |
