| Event | Rank | Mark | By | Meet |
| G-400 | 1 | 55.72 | Ellis, Brittny (2015) (Warren Township, IL) (US#11) | IPTT Classic - Class 3A(IL), 2012-03-24(#1) |
| G-400 | 2 | 56.07 | Paul, Megan (2012) (Carmel Catholic, IL) (US#17) | Arkansas Invitational(AR), 2012-01-14(#2) |
| G-400 | 3 | 56.47 | Pettigrew, Cameron (2013) (Payton College Preparatory, IL) (US#27) | Chicago Public League Group A Championships(IL), 2012-03-18(#1) |
| G-400 | 4 | 57.10 | Little, Shamier (2013) (Lindblom College Preparatory, IL) (US#59) | IPTT Classic - Class 2A(IL), 2012-03-24(#1) |
| G-400 | 5 | 57.26 | Bamgbose, Margaret (2012) (Evanston Township, IL) (US#65) | Bloomington Lady Raider Invite(IL, IL), 2012-03-03(#2) |
| G-400 | 6 | 57.87 | Carr, Simone (2014) (Glenbard North, IL) | IPTT Classic - Class 3A(IL), 2012-03-24(#3) |
| G-400 | 7 | 58.06 | Kwaza, Lake (2012) (Sycamore, IL) | IPTT Classic - Class 2A(IL), 2012-03-24(#3) |
| G-400 | 8 | 58.08 | Clayton, Courtney (2013) (Hononegah, IL) | Byron Indoor Preview(IL), 2012-03-10(#1) |
| | | National Elites above. State Elites below | | |
| G-400 | 9 | 58.73 | Dambra, julie (2012) (Lyons Township, IL) | WSC-Silver Girls Indoor(IL), 2012-03-16(#1) |
| G-400 | 10 | 59.00 | Williams, Brittney (2013) (St. Charles East, IL) | Upstate Eight Conf Girls Indoor(IL), 2012-03-17(#1) |
| G-400 | 11 | 59.12 | Slaughter, Jaylaan (2012) (DeKalb, IL) | USATF Youth Indoor Nationals(IL), 2012-03-11(#2) |
| G-400 | 12 | 59.13 | Schweikert, Laura (2012) (Palatine, IL) | Mid Suburban League Invitational(IL), 2012-03-17(#1) |
| G-400 | 13 | 59.28 | Jimison-Miller, Alexus (2013) (Danville, IL) | Gene Armer Invitational(IL), 2012-03-17(#1) |
| G-400 | 14 | 59.36 | Zick, Lauren (2014) (Kaneland , IL) | IPTT Classic - Class 2A(IL), 2012-03-24(#4) |
| G-400 | 15 | 59.60 | Nalls, Rori (2012) (Whitney Young, IL) | IPTT Classic - Class 3A(IL), 2012-03-24(#6) |
| G-400 | 16 | 1:00.02 | Jackson, Amina (2012) (Lincoln Comm, IL) | Lady Wildcat Indoor Invitational(IL), 2012-03-14(#1) |
| G-400 | 17 | 1:00.08 | Dentzman, Nicole (2013) (Lanphier, IL) | IPTT Classic - Class 2A(IL), 2012-03-24(#5) |
| G-400 | 18 | 1:00.14 | Jump, Jessica (2013) (Metro-East Lutheran, IL) | IPTT Classic - Class A(IL), 2012-03-23(#1) |
| G-400 | 19 | 1:00.16 | Valdivia, Lali (2012) (West Chicago, IL) | DuPage Valley Conf Girls Indoor(IL), 2012-03-15(#2) |
| G-400 | 20 | 1:00.18 | Jackson, Stephanie (2012) (Neuqua Valley, IL) | Upstate Eight Conf Girls Indoor(IL), 2012-03-17(#2) |
| G-400 | 21 | 1:00.19 | Spears, Jovanni (2012) (Perspectives Charter, IL) | IPTT Classic - Class 2A(IL), 2012-03-24(#6) |
| G-400 | 22 | 1:00.24 | Mosbach, Liz (2012) (Hall, IL) | IPTT Classic - Class A(IL), 2012-03-23(#2) |
| G-400 | 23 | 1:00.42 | Young, Mercedes (2012) (Hillcrest, IL) | Mt. Assisi Fast Times Invitational(IL), 2012-03-24(#1) |
| G-400 | 24 | 1:00.43 | Jelinek, Josephine (2015) (York Community, IL) | WSC-Silver Girls Indoor(IL), 2012-03-16(#2) |
| G-400 | 25 | 1:00.51 | Allison, Aubrey (2012) (Illinois Valley Central, IL) | IPTT Classic - Class 2A(IL), 2012-03-24(#7) |
| G-400 | 26 | 1:00.53 | Jones, Patrice (2014) (Hononegah, IL) | AAU Northern Indoor(IL), 2012-02-12(#3) |
| G-400 | 27 | 1:00.61 | Stearns, Rebecca (2012) (Downers Grove South, IL) | WSC-Gold Girls Indoor(IL), 2012-03-15(#1) |
| G-400 | 28 | 1:00.63 | Melchi, Jessica (2013) (Mahomet-Seymour, IL) | IPTT Classic - Class 2A(IL), 2012-03-24(#8) |
| G-400 | 29 | 1:00.65 | Dobbs, Michelle (2013) (Rochelle, IL) | Byron Indoor Preview(IL), 2012-03-10(#3) |
| G-400 | 30 | 1:00.68 | Canaday, Elizabeth (2012) (Springfield Southeast, IL) | IPTT Classic - Class 2A(IL), 2012-03-24(#9) |
| G-400 | 30 | 1:00.68 | Cramsey, Kelsey (2012) (Effingham, IL) | IPTT Classic - Class 2A(IL), 2012-03-24(#10) |
| G-400 | 32 | 1:00.71 | Looman, Jordyn (2013) (Centralia, IL) | Uni High Mini Meet #4(IL), 2012-03-14(#1) |
| G-400 | 33 | 1:00.72 | Ridderhoff, Rebecca (2013) (Downers Grove North, IL) | WSC-Silver Girls Indoor(IL), 2012-03-16(#3) |
| G-400 | 34 | 1:00.74 | Rodriquez, Lisa (2013) (Aurora Central Catholic, IL) | IPTT Classic - Class 2A(IL), 2012-03-24(#11) |
| G-400 | 35 | 1:00.79 | Fitzgerald, Meg (2013) (Bloomington, IL) | Lady Maroon Invitational(IL), 2012-03-19(#1) |
| G-400 | 36 | 1:00.89 | Ayers, Jessica (2012) (Prairie Ridge, IL) | IPTT Classic - Class 3A(IL), 2012-03-24(#8) |
| G-400 | 36 | 1:00.89 | Barrera, Sydney (2014) (Lincoln-Way East, IL) | Gene Armer Invitational(IL), 2012-03-17(#3) |
| G-400 | 38 | 1:00.97 | Wright, Rayanne (2013) (Clifton Central, IL) | IPTT Classic - Class A(IL), 2012-03-23(#3) |
| G-400 | 39 | 1:00.99 | Grossman, Christine (2012) (Prospect, IL) | Mid Suburban League Invitational(IL), 2012-03-17(#2) |
| G-400 | 40 | 1:01.03 | Moody, Jenna (2013) (Plainfield Central, IL) | Coach O Invitational(IL), 2012-01-15(#5) |
| G-400 | 41 | 1:01.07 | Smith, Loucreasha (2014) (Crete-Monee, IL) | Mt. Assisi Fast Times Invitational(IL), 2012-03-24(#2) |
| G-400 | 42 | 1:01.08 | Jackson, Troy (2013) (Rock Island, IL) | Bloomington Lady Raider Invite(IL, IL), 2012-03-03(#3) |
| G-400 | 43 | 1:01.17 | Thompson, Samone (2012) (Champaign Central, IL) | Big 12 Girls Indoor(IL), 2012-03-12(#2) |
| G-400 | 43 | 1:01.17 | Gaesser, Angel (2012) (Gibson City-Melvin-Sibley, IL) | Charleston Girls Invitational(IL), 2012-03-10(#1) |
| G-400 | 45 | 1:01.19 | Plager, Laura (Fremd, IL) | Mid Suburban League Invitational(IL), 2012-03-17(#3) |
| G-400 | 46 | 1:01.20 | Tovsen, Alexa (2012) (Burlington Central, IL) | IPTT Classic - Class 2A(IL), 2012-03-24(#14) |
| G-400 | 47 | 1:01.22 | Oranika, Jessica (2012) (Belleville West, IL) | Mahomet Seymour AA Invitational(IL), 2012-03-16(#1) |
| G-400 | 48 | 1:01.23 | Baeten, Samantha (2013) (Downers Grove South, IL) | WSC-Gold Girls Indoor(IL), 2012-03-15(#2) |
| G-400 | 49 | 1:01.24 | Billingsley, Sydney (2014) (Normal University, IL) | Lady Maroon Invitational(IL), 2012-03-19(#2) |
| G-400 | 50 | 1:01.37 | Wolf, Kayla (2013) (Burlington Central, IL) | Byron Indoor Classic(IL), 2012-03-17(#3) |
| G-400 | 51 | 1:01.40 | Warren, Sarah (2014) (Hinsdale South, IL) | IPTT Classic - Class 3A(IL), 2012-03-24(#10) |
| G-400 | 52 | 1:01.41 | Bolden, Nyasia (2012) (Morgan Park, IL) | Gene Armer Invitational(IL), 2012-03-17(#5) |
| G-400 | 53 | 1:01.43 | Crawley, Danielle (2014) (Sherrard, IL) | Titan Indoor Invitational(IL), 2012-03-13(#1) |
| G-400 | 54 | 1:01.51 | Kijowska, Aleksandra (2014) (Leyden , IL) | WSC-Gold Girls Indoor(IL), 2012-03-15(#3) |
| G-400 | 55 | 1:01.52 | Kayla, Giuliano (2014) (Harry D Jacobs, IL) | Gene Armer Invitational(IL), 2012-03-17(#6) |
| G-400 | 56 | 1:01.66 | Blank, Mary Beth (2014) (Naperville Central, IL) | DuPage Valley Conf Girls Indoor(IL), 2012-03-15(#3) |
| G-400 | 57 | 1:01.67 | Spagnola, Emma (2014) (West Aurora, IL) | DuPage Valley Conf Girls Indoor(IL), 2012-03-15(#4) |
| G-400 | 58 | 1:01.68 | Coss, Carina (2013) (Lane Technical, IL) | Gene Armer Invitational(IL), 2012-03-17(#7) |
| G-400 | 59 | 1:01.75 | Jackson, Jazmin (2013) (Glenwood, IL) | Coach O Invitational(IL), 2012-01-15(#7) |
| G-400 | 60 | 1:01.77 | Burke, Jessica (2012) (Mahomet-Seymour, IL) | Lady Wildcat Indoor Invitational(IL), 2012-03-14(#4) |
| G-400 | 61 | 1:01.80 | Young, Brianna (Crete-Monee, IL) | Mt. Assisi Fast Times Invitational(IL), 2012-03-24(#3) |
| G-400 | 62 | 1:01.82 | Nicholson, Camelia (2013) (Belleville West, IL) | Mahomet Seymour AA Invitational(IL), 2012-03-16(#2) |
| G-400 | 63 | 1:01.84 | Barerra, Sydney (2014) (Lincoln-Way East, IL) | Argo Girls Invitational(IL), 2012-03-03 |
| G-400 | 64 | 1:01.85 | Stanton, Ebonee (2010) (Homewood-Flossmoor, IL) | Lady Pirate Invitational(IL), 2012-03-10(#3) |
| G-400 | 65 | 1:01.87 | Hyshaw, Alexis (2014) (Lincoln-Way East, IL) | USATF Saturday Special(IL), 2012-01-07(#2) |
| G-400 | 66 | 1:01.89 | Grisanzio, Emma (2013) (Wheaton North, IL) | DuPage Valley Conf Girls Indoor(IL), 2012-03-15(#5) |
| G-400 | 67 | 1:01.90 | Jones, Khristian (2015) (Plainfield North, IL) | Plainfield N Girls Invitational(IL), 2012-03-17(#1) |
| G-400 | 68 | 1:01.91 | Simple, Erika (2013) (Normal University, IL) | Lady Maroon Invitational(IL), 2012-03-19(#3) |
| G-400 | 69 | 1:01.94 | Carley, Caroline (2012) (Barrington, IL) | Mid Suburban League Invitational(IL), 2012-03-17(#4) |
| G-400 | 70 | 1:01.95 | Paul, Lauren (2012) (Hinsdale Central, IL) | WSC-Silver Girls Indoor(IL), 2012-03-16(#4) |
| G-400 | 71 | 1:01.99 | Bynes, Jackie (2013) (Lane Technical, IL) | Lady Pirate Invitational(IL), 2012-03-10(#4) |
| G-400 | 72 | 1:02.00 | Lindgren, Lauren (2012) (Schaumburg, IL) | Mid Suburban League Invitational(IL), 2012-03-17(#5) |
| G-400 | 73 | 1:02.03 | Adcock, Taylor (2013) (Central A & M, IL) | IPTT Classic - Class A(IL), 2012-03-23(#5) |
| G-400 | 74 | 1:02.04 | Treadwell, Caprisha (2012) (Dunbar Vocational Academy, IL) | Chicago Public League Group A Championships(IL), 2012-03-18(#4) |
| G-400 | 74 | 1:02.04 | Dean, Dhiaa (2012) (Kenwood Academy, IL) | USATF Saturday Special(IL), 2012-01-07(#4) |
| G-400 | 76 | 1:02.06 | Shaw, Taylor (2012) (St. Ignatius, IL) | GCAC Indoor Championships(IL), 2012-03-17(#1) |
| G-400 | 77 | 1:02.10 | Foreman, Kiana (2012) (Niles North, IL) | Lady Pirate Invitational(IL), 2012-03-10(#5) |
| G-400 | 78 | 1:02.18 | Mcintyre, Keanna (2012) (Belleville East, IL) | SIU Girls Invitational(IL), 2012-03-02(#3) |
| G-400 | 79 | 1:02.21 | Adams, Mykel (2013) (Seton Academy, IL) | IPTT Classic - Class A(IL), 2012-03-23(#6) |
| G-400 | 80 | 1:02.24 | McCarty, Mady (2015) (Springfield, IL) | Gene Armer Invitational(IL), 2012-03-17(#10) |
| G-400 | 81 | 1:02.27 | Madden, Melissa (2012) (Barrington, IL) | Mid Suburban League Invitational(IL), 2012-03-17(#6) |
| G-400 | 82 | 1:02.34 | Michl, Jamie (2012) (Newton, IL) | IPTT Classic - Class A(IL), 2012-03-23(#7) |
| G-400 | 83 | 1:02.41 | Boyer, Kathryn (2012) (St. Thomas More, IL) | Uni High Mini Meet #4(IL), 2012-03-14(#2) |
| G-400 | 84 | 1:02.46 | Holland, Tessa (2015) (Fieldcrest, IL) | IPTT Classic - Class A(IL), 2012-03-23(#8) |
| G-400 | 85 | 1:02.52 | Campbell, Rachel (2014) (East St. Louis-Senior, IL) | Lady Pirate Invitational(IL), 2012-03-10(#6) |
| G-400 | 86 | 1:02.55 | Griesbaum, Danielle (2015) (Lakes, IL) | Paul Bergeson Invitational(IL), 2012-03-10(#1) |
| G-400 | 87 | 1:02.59 | Gentry, Kelsey (2012) (St. Charles North, IL) | Upstate Eight Conf Girls Indoor(IL), 2012-03-17(#3) |
| G-400 | 88 | 1:02.64 | Aremka, Jaclyn (2012) (Plainfield North, IL) | Plainfield N Girls Invitational(IL), 2012-03-17(#3) |
| G-400 | 89 | 1:02.65 | Shrake, Savanah (2013) (Warren Township, IL) | Lake Michigan Invitational(WI), 2012-03-17(#4) |
| G-400 | 90 | 1:02.77 | Sikorski, Francesca (2013) (Joliet Catholic Academy, IL) | Mt. Assisi Fast Times Invitational(IL), 2012-03-24(#4) |
| G-400 | 91 | 1:02.85 | adesanya, lexley (2013) (Naperville North, IL) | DuPage Valley Conf Girls Indoor(IL), 2012-03-15(#6) |
| G-400 | 92 | 1:02.86 | Johnson, Dominique (2012) (Urbana, IL) | ISU HS Invitational(IL), 2012-03-03(#2) |
| G-400 | 93 | 1:02.88 | Moritz, Lindsey (2013) (Lake Zurich, IL) | Lady Pirate Invitational(IL), 2012-03-10(#8) |
| G-400 | 94 | 1:02.91 | Sheehan, Katie (2015) (Neuqua Valley, IL) | DuPage Valley Conf Girls Indoor(IL), 2012-03-15(#7) |
| G-400 | 95 | 1:02.96 | Jones, Nakia (2014) (Harlan Community Academy, IL) | Chicago Public League Group B Championships(IL), 2012-03-18(#1) |
| G-400 | 96 | 1:03.04 | Miller-Bay, Andrea (2014) (Hoffman Estates, IL) | Rolling Meadows Girls Mini Meet(IL), 2012-03-03(#1) |
| G-400 | 97 | 1:03.10 | Plotner, Toria (2013) (Jamaica, IL) | IPTT Classic - Class A(IL), 2012-03-23(#9) |
| G-400 | 98 | 1:03.14 | Green, Brittany (2012) (Argo Community, IL) | Argo Girls Invitational(IL), 2012-03-03 |
| G-400 | 98 | 1:03.14 | Karl, Emily (2015) (Lincoln-Way East, IL) | Argo Girls Invitational(IL), 2012-03-03 |
| G-400 | 100 | 1:03.16 | Fouch, Ashley (2013) (Hampshire, IL) | USATF Dorothy Dawson Invitational(IL), 2012-02-19(#4) |
| G-400 | 101 | 1:03.17 | Jackson, Zhate (2013) (Plano, IL) | Reed Custer Invitational #2(IL), 2012-03-16(#1) |
| G-400 | 102 | 1:03.19 | Cross, Cortney (Homewood-Flossmoor, IL) | Homewood Flossmoor Girls Triangular(IL), 2012-02-29(#2) |
| G-400 | 103 | 1:03.23 | Carrillo, Liz (West Chicago, IL) | DuPage Valley Conf Girls Indoor(IL), 2012-03-15(#8) |
| G-400 | 104 | 1:03.26 | Clark, Gabby (University of Chicago Lab School, IL) | Ted Hayden Holiday Classic(IL), 2011-12-17(#16) |
| G-400 | 105 | 1:03.31 | Carson, Amber (2012) (De La Salle Institute, IL) | GCAC Indoor Championships(IL), 2012-03-17(#3) |
| G-400 | 105 | 1:03.31 | Turner, Amira (2012) (Metea Valley, IL) | Aurora City Invitational(IL), 2012-03-02(#1) |
| G-400 | 107 | 1:03.33 | Berry, Imani (2015) (Belleville West, IL) | Charleston Girls Invitational(IL), 2012-03-10(#6) |
| G-400 | 107 | 1:03.33 | Kelly, Sarah (2014) (Loyola Academy, IL) | GCAC Indoor Championships(IL), 2012-03-17(#4) |
| G-400 | 109 | 1:03.34 | Bianchi, Jessica (2015) (York Community, IL) | WSC-Silver Girls Indoor(IL), 2012-03-16(#5) |
| G-400 | 110 | 1:03.37 | Yuen, Lauren (2012) (Niles West, IL) | Lady Pirate Invitational(IL), 2012-03-10(#10) |
| G-400 | 111 | 1:03.38 | Muhammad, Anisa (2012) (Brooks College Prep Academy, IL) | DeLaSalle Pre Conference Invite(IL), 2012-03-10(#2) |
| G-400 | 112 | 1:03.40 | Yeoman, Amy (2012) (PORTA, IL) | Charleston Girls Invitational(IL), 2012-03-10(#7) |
| G-400 | 112 | 1:03.40 | McGrady, Maddie (2012) (Maine South, IL) | Decatur Area Girls Indoor Invitational(IL), 2012-02-29(#3) |
| G-400 | 114 | 1:03.41 | Simon, Sunshine (2013) (Niles West, IL) | Mt. Assisi Fast Times Invitational(IL), 2012-03-24(#5) |
| G-400 | 114 | 1:03.41 | Wolber, Sarah (2012) (Sterling, IL) | NIB XII Indoor Conference(IL), 2012-03-17(#2) |
| G-400 | 116 | 1:03.42 | Capozziello, Tori (2013) (Schaumburg, IL) | Mid Suburban League Invitational(IL), 2012-03-17(#7) |
| G-400 | 117 | 1:03.48 | Schlueter, Laura (2012) (Breese Mater Dei, IL) | Charleston Girls Invitational(IL), 2012-03-10(#3) |
| G-400 | 118 | 1:03.51 | Storm, Kaci (2012) (Geneseo, IL) | Sterling First Chance Invitational(IL), 2012-03-10(#2) |
| G-400 | 119 | 1:03.52 | Butler, Crystal (2012) (Metea Valley, IL) | Aurora City Invitational(IL), 2012-03-02(#2) |
| G-400 | 120 | 1:03.53 | Roberson, Aurora (2014) (Galesburg, IL) | Silver Streak Invitational(IL), 2012-03-17(#2) |
| G-400 | 121 | 1:03.57 | Wheat, Breanne (2013) (Oak Park-River Forest, IL) | WSC-Silver Girls Indoor(IL), 2012-03-16(#6) |
| G-400 | 122 | 1:03.63 | Hough, Teagan (Lake Zurich, IL) | Lady Pirate Invitational(IL), 2012-03-10(#11) |
| G-400 | 123 | 1:03.67 | Branch, Rheyana (East St. Louis-Senior, IL) | Lady Pirate Invitational(IL), 2012-03-10(#12) |
| G-400 | 124 | 1:03.68 | Meier, Whitney (2013) (Triad, IL) | Jacksonville AA/AAA Invitational(IL), 2012-03-02(#2) |
| G-400 | 125 | 1:03.69 | Hamilton, Angelique (2015) (Bloom Township, IL) | Gene Armer Invitational(IL), 2012-03-17(#14) |
| G-400 | 126 | 1:03.71 | Walton, Tyler (2012) (Marian Catholic, IL) | Lady Pirate Invitational(IL), 2012-03-10(#13) |
| G-400 | 127 | 1:03.73 | Lusk, Keala (Triad, IL) | Jacksonville AA/AAA Invitational(IL), 2012-03-02(#3) |
| G-400 | 128 | 1:03.79 | Kuykendall, Alexandrea (2012) (Riverside-Brookfield, IL) | Mt. Assisi Fast Times Invitational(IL), 2012-03-24(#6) |
| G-400 | 129 | 1:03.80 | Wiebe, Lauren (2012) (Francis Parker, IL) | Gene Armer Invitational(IL), 2012-03-17(#16) |
| G-400 | 130 | 1:03.81 | Norville, Tamar (2012) (Batavia, IL) | Upstate Eight Conf Girls Indoor(IL), 2012-03-17(#5) |
| G-400 | 131 | 1:03.83 | Petrelli, Gianna (2015) (Amos Alonzo Stagg, IL) | Gene Armer Invitational(IL), 2012-03-17(#17) |
| G-400 | 132 | 1:03.87 | Read, Alexis (2012) (Normal Community, IL) | Gene Armer Invitational(IL), 2012-03-17(#18) |
| G-400 | 133 | 1:03.93 | Wooldridge, Kara (2013) (Macomb, IL) | Titan Indoor Invitational(IL), 2012-03-13(#2) |
| G-400 | 134 | 1:03.94 | Mitchell, Kymyenna (2015) (East St. Louis-Senior, IL) | Lady Pirate Invitational(IL), 2012-03-10(#1) |
| G-400 | 135 | 1:03.95 | Griesbaum, Brittani (2016) (Lakes, IL) | Hononegah Girls Classic(IL), 2012-03-03(#6) |
| G-400 | 136 | 1:03.96 | Boehme, Hannah (2015) (Taylorville, IL) | Lady Maroon Invitational(IL), 2012-03-19(#4) |
| G-400 | 137 | 1:03.97 | Sakach, Julia (2015) (Glenbard West, IL) | WSC-Silver Girls Indoor(IL), 2012-03-16(#7) |
| G-400 | 138 | 1:04.00 | Davis, Savanah (Rock Falls Township, IL) | Sterling First Chance Invitational(IL), 2012-03-10(#3) |
| G-400 | 138 | 1:04.00 | Bergren, Stephanie (2015) (Barrington, IL) | Lady Pirate Invitational(IL), 2012-03-10(#2) |
| G-400 | 140 | 1:04.05 | Girard, Maddie (Benet Academy, IL) | Mt. Assisi Fast Times Invitational(IL), 2012-03-24(#7) |
| G-400 | 141 | 1:04.07 | Hartman, Jacey (2012) (Eureka, IL) | Silver Streak Invitational(IL), 2012-03-17(#3) |
| G-400 | 142 | 1:04.10 | Palmer, Tyra (2013) (Hoffman Estates, IL) | Mid Suburban League Invitational(IL), 2012-03-17(#8) |
| G-400 | 143 | 1:04.12 | Capovilla, Kelsey (2012) (Harlem, IL) | Sterling First Chance Invitational(IL), 2012-03-10(#4) |
| G-400 | 143 | 1:04.12 | Schwarz, Brittany (2013) (Dixon, IL) | Gold Medal Invitational(IL), 2012-03-03(#2) |
| G-400 | 145 | 1:04.13 | Engel, Cara (2013) (Grayslake Central, IL) | Lake Michigan Invitational(WI), 2012-03-17(#7) |
| G-400 | 146 | 1:04.18 | Rhea, Katelyn (2014) (Camp Point Central, IL) | Titan Indoor Invitational(IL), 2012-03-13(#3) |
| G-400 | 147 | 1:04.21 | VanHoof, Alex (Bloomington Central Catholic, IL) | Lady Wildcat Indoor Invitational(IL), 2012-03-14(#5) |
| G-400 | 148 | 1:04.23 | Bolliger, Haley (2012) (Tremont, IL) | Charleston Girls Invitational(IL), 2012-03-10(#5) |
| G-400 | 149 | 1:04.25 | Lindsey, Meagan (2014) (Murphysboro, IL) | SIU Girls Invitational(IL), 2012-03-02(#4) |
| G-400 | 150 | 1:04.27 | Yancono, Karoline (Carmel Catholic, IL) | Lake Michigan Invitational(WI), 2012-03-17(#8) |
| G-400 | 150 | 1:04.27 | Kates, Megan (2012) (Herscher, IL) | Reed Custer Invitational #2(IL), 2012-03-16(#2) |
| G-400 | 152 | 1:04.29 | Junkroski, Julia (2015) (Lincoln-Way East, IL) | Lady Pirate Invitational(IL), 2012-03-10(#14) |
| G-400 | 153 | 1:04.31 | Young, Breanna (2012) (Crete-Monee, IL) | Homewood Flossmoor Girls Triangular(IL), 2012-02-29(#4) |
| G-400 | 154 | 1:04.34 | Eisenberg, Kait (2012) (Providence Catholic, IL) | Lockport Girls Invitational(IL), 2012-02-25(#1) |
| G-400 | 155 | 1:04.41 | Martin, Shannon (2012) (Benet Academy, IL) | Mt. Assisi Fast Times Invitational(IL), 2012-03-24(#8) |
| G-400 | 156 | 1:04.43 | Olson, Halle (2014) (Geneseo, IL) | NIB XII Indoor Conference(IL), 2012-03-17(#3) |
| G-400 | 157 | 1:04.45 | Eccher, Athena (2014) (O'Fallon, IL) | SIU Girls Invitational(IL), 2012-03-02(#5) |
| G-400 | 158 | 1:04.46 | Clevenger, Dallas (2015) (Rock Falls Township, IL) | Big Northern Indoor Conference(IL), 2012-03-20(#4) |
| G-400 | 159 | 1:04.47 | Mays, Kyla (2014) (Seton Academy, IL) | GCAC Indoor Championships(IL), 2012-03-17(#5) |
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