| Event | Rank | Mark | By | Meet |
| G-400 | 1 | 54.65 | Halfman, Natalie (2015) (St Ansgar, IA) (US#50) | IA 2A State Meet(IA), 2015-05-23(#1) |
| G-400 | 2 | 55.96 | Wensel, Payton (2018) (Linn-Mar, IA) | IA 4A State Meet(IA), 2015-05-23(#1) |
| | | National Elites above. State Elites below | | |
| G-400 | 3 | 56.30 | Slight, Dianna (2017) (Boone, IA) | IA 3A State Meet(IA), 2015-05-23(#1) |
| G-400 | 4 | 56.87 | Chapman, Larkin (2016) (Muscatine, IA) | IA 4A State Meet(IA), 2015-05-23(#2) |
| G-400 | 5 | 57.01 | Staebler, Jasmine (2015) (Clayton Ridge, IA) | IA 2A State Meet(IA), 2015-05-23(#2) |
| G-400 | 6 | 57.46 | King, Mallory (2016) (Assumption, IA) | IA 3A State Meet(IA), 2015-05-23(#2) |
| G-400 | 7 | 57.63 | Ripslinger, Joy (2017) (Assumption, IA) | IA 3A State Meet(IA), 2015-05-23(#3) |
| G-400 | 8 | 57.75 | Bell, Maddie (2015) (Hudson, IA) | IA 1A State Meet(IA), 2015-05-23(#1) |
| G-400 | 9 | 57.78 | Bonnet, Emma (2017) (Underwood, IA) | IA 2A State Meet(IA), 2015-05-23(#3) |
| G-400 | 10 | 57.79 | Swanson, Addie (2017) (Pleasant Valley, IA) | IA 4A State Meet(IA), 2015-05-23(#3) |
| G-400 | 11 | 57.86 | Plock, Sarah (2015) (Iowa City, IA) | IA 4A State Meet(IA), 2015-05-23(#4) |
| G-400 | 12 | 58.17 | Wroblewski, Alli (2017) (Bettendorf, IA) | IA 4A State Meet(IA), 2015-05-23(#5) |
| G-400 | 13 | 58.21 | Smith, Jordan (2015) (Solon, IA) | IA 3A State Meet(IA), 2015-05-23(#4) |
| G-400 | 14 | 58.35 | Thole, Emily (2015) (West Delaware, IA) | IA 3A State Meet(IA), 2015-05-23(#5) |
| G-400 | 15 | 58.37 | Covey, Oksana (2016) (Des Moines Christian, IA) | IA 2A State Meet(IA), 2015-05-23(#4) |
| G-400 | 16 | 58.48 | Haus, Kaleigh (2015) (Carlisle, IA) | IA 3A State Meet(IA), 2015-05-23(#6) |
| G-400 | 17 | 58.50 | Hulsebus, Shelby (2018) (Benton Community, IA) | IA 3A State Meet(IA), 2015-05-23(#7) |
| G-400 | 18 | 58.85 | Kriegel, Jolissa (2016) (BGM, IA) | IA 1A State Meet(IA), 2015-05-23(#2) |
| G-400 | 19 | 58.98 | Brown, Elle (2017) (Johnston, IA) | IA 4A State Meet(IA), 2015-05-23(#6) |
| G-400 | 20 | 59.06 | Muilenburg, Rebekah (2015) (Moc-Floyd Valley, IA) | IA 3A State Meet(IA), 2015-05-23(#8) |
| G-400 | 21 | 59.10 | Thune, Zoey (2018) (Waterloo West, IA) | IA 4A State Meet(IA), 2015-05-23(#7) |
| G-400 | 22 | 59.20 | Leonard, Payton (2015) (Vinton-Shellsburg, IA) | IA 3A State Meet(IA), 2015-05-23(#9) |
| G-400 | 23 | 59.21 | Kemble, Devyn (2018) (Panorama, IA) | IA 2A State Meet(IA), 2015-05-23(#5) |
| G-400 | 23 | 59.21 | Hurley, Kelsey (2015) (Fremont-Mills Middle And, IA) | IA 1A State Meet(IA), 2015-05-23(#3) |
| G-400 | 25 | 59.48 | Holman, Kori (99) (Unattached, IA) | AAU Junior Olympics National Championships 15-16(VA), 2015-08-08(#40) |
| G-400 | 26 | 59.55 | Funke, Morgan (2018) (Beckman, IA) | IA 2A State Meet(IA), 2015-05-23(#6) |
| G-400 | 27 | 59.57 | Massey, Meagan (2016) (Western Dubuque, IA) | IA 4A State Meet(IA), 2015-05-23(#8) |
| G-400 | 28 | 59.59 | Tyynismaa, Isabelle (2016) (South Tama County, IA) | IA 3A State Meet(IA), 2015-05-23(#10) |
| G-400 | 29 | 59.60 | Kloewer, Asia (2015) (Harlan Community, IA) | IA 3A State Meet(IA), 2015-05-23(#11) |
| G-400 | 30 | 59.66 | Peterson, Lily (2018) (Alta, IA) | IA 1A State Meet(IA), 2015-05-23(#4) |
| G-400 | 31 | 59.71 | Saville, Maddie (2015) (Linn-Mar, IA) | IA 4A State Meet(IA), 2015-05-23(#9) |
| G-400 | 32 | 59.77 | Brown, Ashley (2015) (Roosevelt, IA) | IA 4A State Meet(IA), 2015-05-23(#10) |
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| | | See more performances for G-400 | | |
