| Event | Rank | Mark | By | Meet |
| G-300H | 201 | 49.66 | Zednick, Madison (2017) (Lincoln-Way East, IL) | IL 3A Homewood-Flossmoor Girls Sectional(IL), 2015-05-14(#11) |
| G-300H | 202 | 49.69 | Stillabower, Haily (Fenton, IL) | IL 3A Glenbard North Girls Sectional(IL), 2015-05-14(#9) |
| G-300H | 203 | 49.71 | Troemel, Lauren (2017) (Grant Community, IL) | Lake County Girls Championships(IL), 2015-04-30(#6) |
| G-300H | 204 | 49.72 | Elston, Alexis (Thornridge, IL) | IL 2A Kankakee Girls Sectional(IL), 2015-05-14(#4) |
| G-300H | 205 | 49.74 | Feagans, Lauren (2017) (Pleasant Plains, IL) | Sangamo Conference Championships(IL), 2015-05-05(#1) |
| G-300H | 206 | 49.76 | Bridges, Madison (2017) (Lake Zurich, IL) | IL 3A Fremd Girls Sectional(IL), 2015-05-15(#9) |
| G-300H | 207 | 49.79 | Johnson, Miranda (2017) (Serena, IL) | IL 1A Seneca Girls Sectional(IL), 2015-05-15(#3) |
| G-300H | 208 | 49.80 | Stazak, Hayley (2017) (Plainfield North, IL) | IL 3A Naperville North Girls Sectional(IL), 2015-05-14(#11) |
| G-300H | 209 | 49.81 | Hasik, Julia (Bradley-Bourbonnais, IL) | SWSC-Red Girls Conference Meet(IL), 2015-05-07(#4) |
| G-300H | 210 | 49.82 | Meinert, Emily (Galesburg, IL) | IL 2A Dunlap Girls Sectional(IL), 2015-05-15(#8) |
| G-300H | 211 | 49.85 | Osabuohien, Sophia (Homewood-Flossmoor, IL) | IL 3A Homewood-Flossmoor Girls Sectional(IL), 2015-05-14(#12) |
| G-300H | 212 | 49.87 | Fisher, Sam (2017) (Prairie Ridge, IL) | Palatine Relays(IL), 2015-05-02(#9) |
| G-300H | 213 | 49.88 | Knuth, Mikayla (2017) (Marian Central, IL) | IL 2A Vernon Hills Girls Sectional(IL), 2015-05-15(#5) |
| G-300H | 213 | 49.88 | Griffin, D'Meya (Warren Township, IL) | North Suburban Girls Conference Meet(IL), 2015-05-07(#9) |
| G-300H | 213 | 49.88 | McNicholas, Meagan (2016) (Rochester, IL) | Central State Eight Girls Conference Meet(IL), 2015-05-09(#7) |
| G-300H | 216 | 49.90 | Reese, Kelly (2018) (East St. Louis-Senior, IL) | Southwest Conference Girls Meet(IL), 2015-05-06(#1) |
| G-300H | 217 | 49.92 | Doster, Sarah (Streamwood, IL) | IL 3A St. Charles North Girls Sectional(IL), 2015-05-15(#10) |
| G-300H | 218 | 49.94 | Schrauth, Maddie (2018) (Glenbard West, IL) | WSC-Silver Girls Conference Meet(IL), 2015-05-09(#2) |
| G-300H | 218 | 49.94 | Adesola, Victoria (2017) (Simeon Career Academy, IL) | Larry Roland Girls Invitational(IL), 2015-04-07(#3) |
| G-300H | 220 | 49.95 | Reed, Georgia (2018) (Geneva, IL) | Mike VanDeever Invitational(IL), 2015-04-18(#6) |
| G-300H | 221 | 49.96 | Hart, Hana (2018) (Henry-Senachwine, IL) | IL 1A Bureau Valley Girls Sectional(IL), 2015-05-15(#5) |
| G-300H | 222 | 49.98 | Baker, Holly (2015) (DeKalb, IL) | Crystal Lake Central Girls Invitational(IL), 2015-04-17(#3) |
| G-300H | 223 | 49.99 | Anglin, Gabrielle (2015) (Metamora, IL) | Mid Illini Girls Conference Meet(IL), 2015-05-07(#5) |
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