| Event | Rank | Mark | By | Meet |
| | | National Elites above. State Elites below | | |
| G-400 | 1 | 57.38 | Centore, Jessica (2016) (Jonathan Law, CT) | CT Open State Championships(CT), 2015-06-08(#1) |
| G-400 | 2 | 57.40 | Otaluka, Michele (2015) (South Windsor, CT) | CT Open State Championships(CT), 2015-06-08(#2) |
| G-400 | 3 | 57.50 | Sprout, Julia (2016) (Tolland, CT) | CT Open State Championships(CT), 2015-06-08(#3) |
| G-400 | 4 | 57.75 | Blackwell, Grace (2016) (Joel Barlow, CT) | CT Open State Championships(CT), 2015-06-08(#4) |
| G-400 | 4 | 57.75 | Fitzpatrick, Maura (15) (Mercy, CT) | CT Open State Championships(CT), 2015-06-08(#5) |
| G-400 | 6 | 57.87 | Koether, Emma (2015) (Fairfield Ludlow, CT) | CT Open State Championships(CT), 2015-06-08(#6) |
| G-400 | 7 | 58.16 | Cosentino, Mara (2016) (Glastonbury, CT) | CT Open State Championships(CT), 2015-06-08(#7) |
| G-400 | 8 | 58.23 | Sulger, Anna (2015) (Darien, CT) | Loucks Games(NY), 2015-05-09(#15) |
| G-400 | 9 | 58.26 | McMahon, Elizabeth (2018) (Conard, CT) | CCC West Championships(CT), 2015-05-26(#1) |
| G-400 | 10 | 58.38 | Pernell, Michaela (2015) (Nonnewaug, CT) | Berkshire League Championships(CT), 2015-05-16(#1) |
| G-400 | 11 | 58.39 | Anderson, Annika (16) (Farmington, CT) | CT Open State Championships(CT), 2015-06-08(#8) |
| G-400 | 12 | 58.61 | Sarkisian, Leah (2018) (Danbury, CT) | NB Outdoor Nationals - Freshman(NC), 2015-06-20(#13) |
| G-400 | 13 | 58.93 | Geyselaers, Nicole (2000) (Housatonic Valley Regional, CT) | Berkshire League Championships(CT), 2015-05-16(#2) |
| G-400 | 14 | 58.97 | Epps, Torrie (2015) (Windsor, CT) | CCC North Championships(CT), 2015-05-26(#3) |
| G-400 | 15 | 59.11 | Young Spencer, Tonija (2015) (Hillhouse, CT) | SCC Championships(CT), 2015-05-26(#3) |
| G-400 | 16 | 59.14 | James, Zaidra (2017) (Capital Prep, CT) | CT Class S State Meet(CT), 2015-06-03(#1) |
| G-400 | 17 | 59.16 | Conrad, Hailey (2017) (Newtown, CT) | CT Open State Championships(CT), 2015-06-08(#10) |
| G-400 | 18 | 59.22 | Harris, Jahleah (18) (Bloomfield, CT) | CT Open State Championships(CT), 2015-06-08(#11) |
| G-400 | 19 | 59.32 | Fisher, Kelsey (2016) (East Catholic, CT) | CCC North Championships(CT), 2015-05-26(#4) |
| G-400 | 20 | 59.39 | Bacote, Skyler (15) (Hamden, CT) | Irv Black Invitational(CT), 2015-05-09(#2) |
| G-400 | 21 | 59.46 | Santana, Mia (2016) (New London, CT) | Eastern Connecticut Conference(CT), 2015-05-23(#1) |
| G-400 | 22 | 59.70 | Geyselaers, Emily (2018) (Housatonic Valley Regional, CT) | CT Class S State Meet(CT), 2015-06-03(#3) |
| G-400 | 23 | 59.88 | Hurst, Rachel (2015) (Fairfield Ludlow, CT) | CT Class LL State Meet(CT), 2015-06-02(#5) |
| G-400 | 24 | 59.93 | Snape, Tiffany (2017) (Amistad, CT) | CT Open State Championships(CT), 2015-06-08(#13) |
| G-400 | 25 | 59.97 | Smith, Chelsea (Manchester, CT) | CCC North Championships(CT), 2015-05-26(#5) |
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| | | See more performances for G-400 | | |
