| Event | Rank | Mark | By | Meet |
| G-400 | 202 | 1:01.78 | Lagger, Erica (2013) (Geneva, IL) | Upstate 8 River Girls Conference(IL), 2012-05-03(#4) |
| G-400 | 203 | 1:01.80 | Decesario, M (2014) (Sullivan, IL) | Arthur Girls Invitational(IL), 2012-03-31(#2) |
| G-400 | 203 | 1:01.80 | Krue, Taylor (2012) (Vernon Hills, IL) | North Suburban Conference Girls Meet(IL), 2012-05-03(#8) |
| G-400 | 205 | 1:01.81 | Downey, Brianna (2012) (Putnam County, IL) | Illinois Valley 2012(IL), 2012-05-07(#2) |
| G-400 | 205 | 1:01.81 | Edwards, Taylor (2015) (Arcola, IL) | IL 1A Girls State Prelims(IL), 2012-05-17(#5) |
| G-400 | 207 | 1:01.82 | Korman, Emily (2015) (Highland Park, IL) | CSL Girls Frosh Invitational(IL), 2012-04-25(#1) |
| G-400 | 207 | 1:01.82 | Broughton, Antoinette (2015) (Homewood-Flossmoor, IL) | SWSC Blue Girls Conference(IL), 2012-05-03(#1) |
| G-400 | 209 | 1:01.85 | Clements, Kiah (2012) (Rock Island, IL) | Carol Koszola Classic(IL), 2012-04-21(#5) |
| G-400 | 210 | 1:01.87 | Pickens, Laila (2014) (Glenbard North, IL) | Dupage Valley Conference Girls(IL), 2012-05-03(#1) |
| G-400 | 211 | 1:01.92 | Maki, Karin (Wauconda Comm, IL) | North Suburban Conference Girls Meet(IL), 2012-05-03(#9) |
| G-400 | 212 | 1:01.96 | Aguillera, Krystal (Bolingbrook, IL) | Homewood Flossmoor Girls Invitational(IL), 2012-04-07(#13) |
| G-400 | 212 | 1:01.96 | Capovilla, Kelsey (2012) (Harlem, IL) | Rock Island Girls ABC Invitational(IL), 2012-04-14(#4) |
| G-400 | 214 | 1:01.98 | Harrell, Alexandra (2012) (York Community, IL) | Sue Pariseau Invitational(IL), 2012-04-21(#6) |
| G-400 | 214 | 1:01.98 | Solomon, Taylor (2015) (Bloom Township, IL) | IL 3A Homewood-Flossmoor Sectional(IL), 2012-05-10(#6) |
| G-400 | 216 | 1:02.00 | Williams, Amelia (Edwardsville, IL) | Alton Girls Invitational(IL), 2012-04-19(#5) |
| G-400 | 216 | 1:02.00 | Ladner, Becca (2015) (Galesburg, IL) | Western Big 6 Girls Conference(IL), 2012-05-04(#2) |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | See more performances for G-400 | | |
