| Event | Rank | Mark | By | Meet |
| G-400 | 1 | 54.05 | Ellis, Brittny (2015) (Warren Township, IL) (US#22) | Brooks PR Invitational(WA), 2015-06-20(#2) |
| | | National Elites above. State Elites below | | |
| G-400 | 2 | 57.94 | Beeman, Alison (2016) (Wauconda Comm, IL) | IL 2A Girls State Finals(IL), 2015-05-23(#5) |
| G-400 | 3 | 58.75 | Johnson, Avryl (2018) (Libertyville, IL) | North Suburban Girls Conference Meet(IL), 2015-05-07(#3) |
| G-400 | 4 | 59.08 | Mabien, Kiara (2017) (Warren Township, IL) | North Suburban Girls Conference Meet(IL), 2015-05-07(#4) |
| G-400 | 5 | 59.96 | Wasserberg, Molly (2016) (Vernon Hills, IL) | North Suburban Girls Conference Meet(IL), 2015-05-07(#5) |
| G-400 | 6 | 1:01.07 | Milburn, Emma (2018) (Lake Forest, IL) | Paul Wallace Classic (IL), 2015-01-01(#4) |
| G-400 | 7 | 1:01.39 | Bently, Grace (2018) (Lake Forest, IL) | USATF Youth National Championships 15-16(IL), 2015-07-05(#13) |
| G-400 | 8 | 1:01.79 | Schlebecker, Megan (Mundelein Cons, IL) | North Suburban Girls Conference Meet(IL), 2015-05-07(#6) |
| G-400 | 9 | 1:01.90 | Katz, Lauren (2018) (Vernon Hills, IL) | USATF Youth National Championships 15-16(IL), 2015-07-05(#14) |
| G-400 | 10 | 1:02.00 | Terry, Erica (2015) (Lakes, IL) | D117 Girls Invitational(IL), 2015-04-23(#1) |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | See more performances for G-400 | | |
