| Event | Rank | Mark | By | Meet |
| G-400 | 1 | 53.46 | Little, Shamier (2013) (Lindblom College Preparatory, IL) (US#11) | AAU Ntl JO YM YW(TX), 2012-08-04(#2) |
| G-400 | 2 | 54.08 | Ellis, Brittny (2015) (Warren Township, IL) (US#24) | IL 3A Girls State Finals(IL), 2012-05-19(#1) |
| G-400 | 3 | 54.37 | Paul, Megan (2012) (Carmel Catholic, IL) (US#30) | US Junior Nationals(IN), 2012-06-15(#13) |
| G-400 | 4 | 54.41 | Pettigrew, Cameron (2013) (Payton College Preparatory, IL) (US#31) | IL 3A Girls State Finals(IL), 2012-05-19(#2) |
| G-400 | 5 | 55.71 | Clayton, Courtney (2013) (Hononegah, IL) | IL 3A Girls State Prelims(IL), 2012-05-18(#1) |
| G-400 | 6 | 56.09 | Oranika, Jessica (2012) (Belleville West, IL) | IL 3A Girls State Prelims(IL), 2012-05-18(#2) |
| G-400 | 7 | 56.12 | English, Parker (2014) (Evanston Township, IL) | IL 3A Girls State Prelims(IL), 2012-05-18(#1) |
| | | National Elites above. State Elites below | | |
| G-400 | 8 | 56.42 | Moore, Anthonia (2013) (Huntley, IL) | USATF Ntl JO YM YW(MD), 2012-07-29(#10) |
| G-400 | 9 | 56.47 | Detra, Brenna (2013) (Richwoods, IL) | IL 3A Normal West Sectional(IL), 2012-05-11(#1) |
| G-400 | 10 | 56.50 | Strong, HaSheana (2013) (Walther Christian, IL) | USATF Ntl JO YM YW(MD), 2012-07-29(#23) |
| G-400 | 11 | 56.62 | Carr, Simone (2014) (Glenbard North, IL) | Mustang Girls Relays(IL), 2012-04-07(#1) |
| G-400 | 12 | 56.66 | Shead, Jordan (2014) (St. Charles East, IL) | IL 3A Girls State Prelims(IL), 2012-05-18(#2) |
| G-400 | 13 | 56.67 | Slaughter, Jaylaan (2012) (DeKalb, IL) | Great Southwest Classic(NM), 2012-06-02(#2) |
| G-400 | 14 | 56.83 | Strong, Anna (2013) (Walther Christian, IL) | IL 2A Girls State Prelims(IL), 2012-05-18(#2) |
| G-400 | 15 | 56.85 | Moody, Jenna (2013) (Plainfield Central, IL) | IL 3A Girls State Prelims(IL), 2012-05-18(#2) |
| G-400 | 16 | 56.88 | Garrett, De'Asia (2013) (Rich South, IL) | USATF Region 7 Junior Olympics(IN), 2012-07-08(#1) |
| G-400 | 17 | 56.94 | Wright, Rayanne (2013) (Clifton Central, IL) | IL 1A Girls State Finals(IL), 2012-05-19(#1) |
| G-400 | 18 | 57.01 | Crawford, Charday (2013) (Springfield Southeast, IL) | Springfield Girls City Meet(IL), 2012-04-25(#1) |
| G-400 | 19 | 57.32 | Williams, Brittney (2013) (St. Charles East, IL) | IL 3A Girls State Prelims(IL), 2012-05-18(#4) |
| G-400 | 19 | 57.32 | Sykes, Faith (2012) (Lakes, IL) | Dominion District Championships(VA), 2012-05-16(#2) |
| G-400 | 21 | 57.44 | Jimison-Miller, Alexus (2013) (Danville, IL) | IL 3A Girls State Prelims(IL), 2012-05-18(#3) |
| G-400 | 22 | 57.46 | Saffa, Anita (2013) (West Aurora, IL) | IL 3A Girls State Prelims(IL), 2012-05-18(#3) |
| G-400 | 23 | 57.47 | Garrett, Ci'Erra (2013) (Rich South, IL) | USATF Region 7 Junior Olympics(IN), 2012-07-08(#4) |
| G-400 | 24 | 57.62 | Whittler, Tayler (2012) (Crete-Monee, IL) | IL 3A Homewood-Flossmoor Sectional(IL), 2012-05-10(#1) |
| G-400 | 25 | 57.63 | Shaw, Taylor (2012) (St. Ignatius, IL) | IL 3A Girls State Prelims(IL), 2012-05-18(#5) |
| G-400 | 25 | 57.63 | Mcclain, Amanda (2015) (Sullivan, IL) | IL 1A Girls State Finals(IL), 2012-05-19(#2) |
| G-400 | 27 | 57.67 | Melchi, Jessica (2013) (Mahomet-Seymour, IL) | IL 2A Girls State Finals(IL), 2012-05-19(#4) |
| G-400 | 28 | 57.69 | Seidl, Megan (2013) (Bartlett, IL) | IL 3A Bartlett Sectional(IL), 2012-05-11(#4) |
| G-400 | 29 | 57.91 | Hill, Chelsea (2014) (Freeburg Community, IL) | IL 2A Girls State Finals(IL), 2012-05-19(#5) |
| G-400 | 30 | 57.92 | Mcnamee, Nijia (2015) (Belleville West, IL) | Dale Collier Invitational(MO), 2012-04-28(#2) |
| G-400 | 31 | 57.99 | Jump, Jessica (2013) (Metro-East Lutheran, IL) | IL 1A Girls State Finals(IL), 2012-05-19(#3) |
| G-400 | 32 | 58.05 | Bolden, Nyasia (2012) (Morgan Park, IL) | Eastern Relays(KY), 2012-04-28(#1) |
| G-400 | 33 | 58.14 | Schweikert, Laura (2012) (Palatine, IL) | IL 3A Grayslake North Sectional(IL), 2012-05-10(#2) |
| G-400 | 34 | 58.22 | Treadwell, Caprisha (2012) (Dunbar Vocational Academy, IL) | IL 3A Girls State Prelims(IL), 2012-05-18(#6) |
| G-400 | 35 | 58.26 | Cramsey, Kelsey (2012) (Effingham, IL) | Jokisch-Grandone Invitational(IL), 2012-04-28(#1) |
| G-400 | 36 | 58.30 | Horton, Jahnell (2012) (Evanston Township, IL) | Southeast Spartan Invitational(IL), 2012-04-07(#1) |
| G-400 | 37 | 58.31 | Young, Mercedes (2012) (Hillcrest, IL) | IL 2A Girls State Prelims(IL), 2012-05-18(#3) |
| G-400 | 38 | 58.34 | D'Angelo, Laura (2013) (McHenry, IL) | IL 3A Girls State Prelims(IL), 2012-05-18(#5) |
| G-400 | 38 | 58.34 | Fairman, Sophie (2013) (Staunton, IL) | IL 1A Girls State Finals(IL), 2012-05-19(#4) |
| G-400 | 40 | 58.36 | Gold, Kalla (2012) (Eureka, IL) | IL 1A Girls State Prelims(IL), 2012-05-17(#1) |
| G-400 | 41 | 58.39 | Mcintyre, Keanna (2012) (Belleville East, IL) | IL 3A Normal West Sectional(IL), 2012-05-11(#3) |
| G-400 | 42 | 58.43 | Thorpe, Kiera (2015) (Highland Park, IL) | IL 3A Girls State Prelims(IL), 2012-05-18(#4) |
| G-400 | 43 | 58.49 | Allison, Aubrey (2012) (Illinois Valley Central, IL) | IL 2A Girls State Prelims(IL), 2012-05-18(#2) |
| G-400 | 44 | 58.50 | Schmitz, Kaylee (2012) (O'Fallon, IL) | O'Fallon Girls Invitational(IL), 2012-04-13(#1) |
| G-400 | 44 | 58.50 | Spears, Jovanni (2012) (Perspectives Charter, IL) | IL 3A Girls State Prelims(IL), 2012-05-18(#4) |
| G-400 | 46 | 58.53 | Jackson, Troy (2013) (Rock Island, IL) | Rock Island Girls ABC Invitational(IL), 2012-04-14(#1) |
| G-400 | 47 | 58.55 | O'Grady, Dana (2014) (Lincoln-Way East, IL) | SWSC Blue Girls Conference(IL), 2012-05-03(#1) |
| G-400 | 48 | 58.57 | Agamah, Miriam (2013) (Springfield, IL) | Springfield Girls City Meet(IL), 2012-04-25(#2) |
| G-400 | 48 | 58.57 | Howard, Demara (2012) (Crane Technical Prep, IL) | IL 2A Girls State Prelims(IL), 2012-05-18(#4) |
| G-400 | 50 | 58.60 | Bynes, Jackie (2013) (Lane Technical, IL) | Bruce Ritter Invitational(IL), 2012-04-13(#1) |
| G-400 | 50 | 58.60 | Valdivia, Lali (2012) (West Chicago, IL) | IL 3A Bartlett Sectional(IL), 2012-05-11(#5) |
| G-400 | 52 | 58.61 | Weis, Aryn (2012) (Highland, IL) | IL 2A Girls State Prelims(IL), 2012-05-18(#5) |
| G-400 | 53 | 58.70 | Kiple, McKenna (2013) (Wheaton-Warrenville South, IL) | Dupage Valley Conference Girls(IL), 2012-05-03(#4) |
| G-400 | 54 | 58.72 | Giuliano, Kayla (2014) (Harry D Jacobs, IL) | IL 3A Girls State Prelims(IL), 2012-05-18(#5) |
| G-400 | 54 | 58.72 | Ayers, Jessica (2012) (Prairie Ridge, IL) | IL 3A Hononegah Sectional(IL), 2012-05-10(#5) |
| G-400 | 56 | 58.75 | Mosbach, Liz (2012) (Hall, IL) | IL 1A Girls State Finals(IL), 2012-05-19(#5) |
| G-400 | 57 | 58.76 | Hyshaw, Alexis (2014) (Lincoln-Way East, IL) | Dupage Valley Conference Girls(IL), 2012-05-03(#5) |
| G-400 | 58 | 58.81 | Jones, Khristian (2015) (Plainfield North, IL) | AAU Area 14 Girls National Qualifier(IL), 2012-06-28(#5) |
| G-400 | 59 | 58.82 | Harper, Mia (2014) (Rolling Meadows, IL) | IL 3A Lake Park Sectional(IL), 2012-05-10(#1) |
| G-400 | 60 | 58.86 | Jackson, Jazmin (2013) (Glenwood, IL) | Capital Area Classic(IL), 2012-05-14(#1) |
| G-400 | 61 | 58.94 | Rhodes, Rachel (2014) (Williamsville, IL) | Jokisch-Grandone Invitational(IL), 2012-04-28(#2) |
| G-400 | 62 | 58.98 | Urbancik, Stephanie (2014) (Downers Grove North, IL) | IL 3A Downers Grove North Sectional(IL), 2012-05-10(#1) |
| G-400 | 63 | 59.03 | Simple, Erika (2013) (Normal University, IL) | Corn Belt Conference(IL), 2012-05-04(#2) |
| G-400 | 64 | 59.13 | Salley, Christin (2015) (Homewood-Flossmoor, IL) | USATF Ntl JO IB IG(MD), 2012-07-28(#27) |
| G-400 | 65 | 59.17 | Bristow, Elizabeth (2015) (St. Thomas More, IL) | IL 2A Girls State Prelims(IL), 2012-05-18(#2) |
| G-400 | 66 | 59.18 | Ridderhoff, Rebecca (2013) (Downers Grove North, IL) | IL 3A Downers Grove North Sectional(IL), 2012-05-10(#2) |
| G-400 | 67 | 59.20 | Nicholson, Camelia (2013) (Belleville West, IL) | Southwest Conference Girls(IL), 2012-05-02(#3) |
| G-400 | 68 | 59.26 | Adams, Mykel (2013) (Seton Academy, IL) | IL 1A Girls State Finals(IL), 2012-05-19(#7) |
| G-400 | 69 | 59.30 | Schmelzle, Hope (2013) (Wheaton-Warrenville South, IL) | Carlson-Anderson Classic(IL), 2012-04-20(#1) |
| G-400 | 70 | 59.35 | Griesbaum, Brittani (2016) (Lakes, IL) | IL 2A Vernon Hills Sectional(IL), 2012-05-11(#2) |
| G-400 | 71 | 59.36 | Nalls, Rori (2012) (Whitney Young, IL) | Mike Rebeck Invitational(IL), 2012-04-14(#3) |
| G-400 | 71 | 59.36 | Griesbaum, Danielle (2015) (Lakes, IL) | IL 2A Vernon Hills Sectional(IL), 2012-05-11(#3) |
| G-400 | 71 | 59.36 | Zick, Lauren (2014) (Kaneland , IL) | IL 2A Girls State Prelims(IL), 2012-05-18(#6) |
| G-400 | 74 | 59.40 | Wooldridge, Kara (2013) (Macomb, IL) | IL 2A Girls State Prelims(IL), 2012-05-18(#4) |
| G-400 | 74 | 59.40 | Collins, Lakonka (2014) (Freeport, IL) | IL 2A Girls State Prelims(IL), 2012-05-18(#5) |
| G-400 | 76 | 59.44 | Pomerich, Elliotte (Lake Forest, IL) | North Suburban Conference Girls Meet(IL), 2012-05-03(#2) |
| G-400 | 77 | 59.45 | Cohn, Hannah (2016) (St. Ignatius, IL) | Central AAU District Qualifier(IL), 2012-06-16(#2) |
| G-400 | 78 | 59.51 | Scott, Joshlynn (2013) (Kenwood Academy, IL) | USATF Region 7 Junior Olympics(IN), 2012-07-08(#10) |
| G-400 | 79 | 59.60 | Demogerontas, Tina (2013) (Carl Sandburg, IL) | Falcon Blue and Gold Invite(IL), 2012-04-14(#1) |
| G-400 | 80 | 59.62 | Rodriguez, Lisa (2013) (Aurora Central Catholic, IL) | Walther Lutheran Invitational(IL), 2012-04-21(#2) |
| G-400 | 81 | 59.66 | Hoffert, Lindsey (2015) (Bureau Valley, IL) | Three Rivers Conference(IL), 2012-05-05(#1) |
| G-400 | 82 | 59.67 | Gaesser, Angel (2012) (Gibson City-Melvin-Sibley, IL) | Monticello Girl Invitational(IL), 2012-04-27(#3) |
| G-400 | 83 | 59.68 | Bollinger, Mackenzie (2013) (Yorkville, IL) | Track & Field of Dreams Invitational(IL), 2012-04-21(#1) |
| G-400 | 84 | 59.70 | Blalock, Caitlin (2012) (Neuqua Valley, IL) | Falcon Blue and Gold Invite(IL), 2012-04-14(#2) |
| G-400 | 85 | 59.73 | Huddleston, Meih (2012) (Edwardsville, IL) | Southwest Conference Girls(IL), 2012-05-02(#5) |
| G-400 | 86 | 59.78 | Sheehan, Katie (2015) (Neuqua Valley, IL) | Dupage Valley Conference Girls(IL), 2012-05-03(#6) |
| G-400 | 86 | 59.78 | Weichman, Megan (2015) (Teutopolis, IL) | IL 1A Girls State Finals(IL), 2012-05-19(#8) |
| G-400 | 88 | 59.80 | Reifel, Emma (2013) (Glenbard West, IL) | Bruce Ritter Invitational(IL), 2012-04-13(#3) |
| G-400 | 89 | 59.84 | Sunkett, Taylor (2014) (Belleville East, IL) | IL 3A Normal West Sectional(IL), 2012-05-11(#6) |
| G-400 | 90 | 59.89 | Machometa, Molly (2012) (McHenry, IL) | McHenry County Meet(IL), 2012-04-20(#1) |
| G-400 | 91 | 59.90 | Plager, Laura (Fremd, IL) | Buffalo Grove Girls Invitational(IL), 2012-04-07(#2) |
| G-400 | 92 | 59.91 | Dentzman, Nicole (2013) (Lanphier, IL) | Central State 8 Girls Conference(IL), 2012-05-03(#2) |
| G-400 | 93 | 59.94 | Adcock, Taylor (2013) (Central A & M, IL) | Shelbyville Girls Open(IL), 2012-04-06(#2) |
| G-400 | 94 | 59.96 | Johnson, Ellie (2013) (Girard, IL) | Jokisch-Grandone Invitational(IL), 2012-04-28(#3) |
| G-400 | 95 | 59.97 | Porter, Cheriese (2012) (Willowbrook, IL) | WSC Gold Girls Conference(IL), 2012-05-04(#1) |
| G-400 | 96 | 1:00.01 | McCarty, Mady (2015) (Springfield, IL) | Central State 8 Girls Conference(IL), 2012-05-03(#3) |
| G-400 | 97 | 1:00.02 | O'Neal, Jasmine (2015) (Rockford East, IL) | IL 2A Girls State Prelims(IL), 2012-05-18(#5) |
| G-400 | 98 | 1:00.03 | Hill, Katelyn (2014) (Glenbard South, IL) | Tiger Girls Invitational(IL), 2012-04-27(#2) |
| G-400 | 99 | 1:00.10 | Grisanzio, Emma (2013) (Wheaton North, IL) | Falcon Blue and Gold Invite(IL), 2012-04-14(#3) |
| G-400 | 99 | 1:00.10 | Branch, Rheyana (East St. Louis-Senior, IL) | Alton Girls Invitational(IL), 2012-04-19(#2) |
| G-400 | 99 | 1:00.10 | Smith, Loucreasha (2014) (Crete-Monee, IL) | IL 3A Homewood-Flossmoor Sectional(IL), 2012-05-10(#4) |
| G-400 | 102 | 1:00.17 | Johnson, Megan (2013) (North Boone, IL) | IL 1A Girls State Prelims(IL), 2012-05-17(#3) |
| G-400 | 102 | 1:00.17 | Lindsey, Meagan (2014) (Murphysboro, IL) | IL 2A Girls State Prelims(IL), 2012-05-18(#4) |
| G-400 | 104 | 1:00.18 | Miller-Bey, Drea (Hoffman Estates, IL) | IL 3A Bartlett Sectional(IL), 2012-05-11(#6) |
| G-400 | 105 | 1:00.23 | Yeoman, Amy (2012) (PORTA, IL) | Sangamo Conference meet(IL), 2012-05-03(#2) |
| G-400 | 106 | 1:00.25 | Choquette, Nicole (2013) (Urbana, IL) | IL 2A Girls State Prelims(IL), 2012-05-18(#5) |
| G-400 | 107 | 1:00.26 | Babiuk, Samantha (2013) (Barrington, IL) | Mid-Suburban League Girls Conference(IL), 2012-05-04(#2) |
| G-400 | 108 | 1:00.31 | Wolber, Sarah (2012) (Sterling, IL) | IL 2A Girls State Prelims(IL), 2012-05-18(#7) |
| G-400 | 109 | 1:00.33 | Holland, Tessa (2015) (Fieldcrest, IL) | IL 1A Girls State Prelims(IL), 2012-05-17(#2) |
| G-400 | 110 | 1:00.34 | Butler, Crystal (2012) (Metea Valley, IL) | Metea Valley Girls Invitational(IL), 2012-04-07(#1) |
| G-400 | 111 | 1:00.37 | Wallace, Asha (2015) (Bolingbrook, IL) | SWSC Blue Girls Conference(IL), 2012-05-03(#3) |
| G-400 | 111 | 1:00.37 | Ropski, Emma (2013) (Maine South, IL) | IL 3A Niles West Sectional(IL), 2012-05-10(#3) |
| G-400 | 113 | 1:00.41 | Paul, Lauren (2012) (Hinsdale Central, IL) | Hinsdale Central Devilette Invite(IL), 2012-04-14(#1) |
| G-400 | 113 | 1:00.41 | Plotner, Toria (2013) (Jamaica, IL) | IL 1A Girls State Prelims(IL), 2012-05-17(#2) |
| G-400 | 115 | 1:00.43 | Lindgren, Lauren (2012) (Schaumburg, IL) | IL 3A Bartlett Sectional(IL), 2012-05-11(#7) |
| G-400 | 116 | 1:00.48 | Croft, Jesha (Carbondale Comm, IL) | Lady Maroon Invitational(IL), 2012-03-30(#4) |
| G-400 | 116 | 1:00.48 | Haight, Becky (2015) (Warren Township, IL) | IL 3A Grayslake North Sectional(IL), 2012-05-10(#4) |
| G-400 | 118 | 1:00.49 | Frigo, Michelle (2012) (York Community, IL) | Tiger Girls Invitational(IL), 2012-04-27(#3) |
| G-400 | 119 | 1:00.50 | Lafemina, Angelica (2013) (Tinley Park, IL) | Hillcrest Lady Hawk Invitational(IL), 2012-04-14(#2) |
| G-400 | 119 | 1:00.50 | Wasowicz, Tess (2013) (Palatine, IL) | Palatine Girls Triangular(IL), 2012-04-17(#1) |
| G-400 | 119 | 1:00.50 | Yong, Amy (2012) (Wheaton-Warrenville South, IL) | Carlson-Anderson Classic(IL), 2012-04-20(#2) |
| G-400 | 119 | 1:00.50 | Moritz, Lindsey (2013) (Lake Zurich, IL) | North Suburban Conference Girls Meet(IL), 2012-05-03(#4) |
| G-400 | 123 | 1:00.51 | Jones, Nakia (2014) (Harlan Community Academy, IL) | CPS Invite #1(IL), 2012-04-14(#1) |
| G-400 | 123 | 1:00.51 | Kijowska, Aleksandra (2014) (Leyden , IL) | WSC Gold Girls Conference(IL), 2012-05-04(#2) |
| G-400 | 125 | 1:00.52 | Miller-Bay, Andrea (2014) (Hoffman Estates, IL) | Metea Valley Girls Invitational(IL), 2012-04-07(#2) |
| G-400 | 126 | 1:00.55 | Treat, Rachel (2015) (Sacred Heart-Griffin, IL) | Central State 8 Girls Conference(IL), 2012-05-03(#4) |
| G-400 | 127 | 1:00.58 | Strohl, Cassidy (2012) (Heyworth, IL) | IL 1A Girls State Prelims(IL), 2012-05-17(#3) |
| G-400 | 128 | 1:00.60 | Madden, Melissa (2012) (Barrington, IL) | Palatine Relays(IL), 2012-04-28(#6) |
| G-400 | 129 | 1:00.63 | Dudley, Alex (2013) (Oswego East, IL) | IL 3A Joliet West Sectional(IL), 2012-05-10(#5) |
| G-400 | 130 | 1:00.67 | Schlueter, Laura (2012) (Breese Mater Dei, IL) | IL 1A Girls State Prelims(IL), 2012-05-17(#3) |
| G-400 | 131 | 1:00.69 | Schmitke, Sarah (2013) (Grayslake North, IL) | IL 3A Grayslake North Sectional(IL), 2012-05-10(#5) |
| G-400 | 132 | 1:00.70 | Kinell, Anna (Maine South, IL) | Falcon Blue and Gold Invite(IL), 2012-04-14(#5) |
| G-400 | 133 | 1:00.71 | May, Elle (2013) (Riverdale, IL) | Alleman Sailer Invitational(IL), 2012-04-24(#1) |
| G-400 | 133 | 1:00.71 | Mccain, Dasia (Thornridge, IL) | IL 3A Homewood-Flossmoor Sectional(IL), 2012-05-10(#5) |
| G-400 | 135 | 1:00.77 | Looman, Jordyn (2013) (Centralia, IL) | Lady Maroon Invitational(IL), 2012-03-30(#6) |
| G-400 | 136 | 1:00.78 | Powell, Chasity (2014) (Crete-Monee, IL) | Homewood Flossmoor Girls Invitational(IL), 2012-04-07(#7) |
| G-400 | 137 | 1:00.81 | Turner, Amira (2012) (Metea Valley, IL) | Glenbard East Ram Invitational(IL), 2012-04-21(#2) |
| G-400 | 137 | 1:00.81 | Johnson, Ellie (2013) (North Macoupin, IL) | Capital Area Classic(IL), 2012-05-14(#4) |
| G-400 | 139 | 1:00.84 | Jackson, Zhate (2013) (Plano, IL) | Seneca Invitational(IL), 2012-04-13(#1) |
| G-400 | 140 | 1:00.90 | Engel, Cara (2013) (Grayslake Central, IL) | Lady Bulldog Invitational(IL), 2012-04-07(#1) |
| G-400 | 141 | 1:00.94 | Johnson, Nia (Adlai E Stevenson, IL) | North Suburban Conference Girls Meet(IL), 2012-05-03(#5) |
| G-400 | 141 | 1:00.94 | Divis, Mariah (2014) (Minooka Community, IL) | IL 3A Joliet West Sectional(IL), 2012-05-10(#6) |
| G-400 | 143 | 1:00.96 | Stanton, Ebonee (2010) (Homewood-Flossmoor, IL) | Rock Island Girls ABC Invitational(IL), 2012-04-14(#2) |
| G-400 | 144 | 1:00.98 | Thompson, Mystique (2014) (Rock Island, IL) | Shipley ABC Invitational(IL), 2012-03-31(#1) |
| G-400 | 144 | 1:00.98 | Sikorski, Francesca (2013) (Joliet Catholic Academy, IL) | IL 2A Hillcrest Sectional(IL), 2012-05-10(#4) |
| G-400 | 146 | 1:00.99 | Stevens, Asia (Thornton Township, IL) | Homewood Flossmoor Girls Invitational(IL), 2012-04-07(#9) |
| G-400 | 147 | 1:01.00 | Saccaro, Lyndi (Rochester, IL) | Rochester Invitational(IL), 2012-04-21(#2) |
| G-400 | 148 | 1:01.01 | Zimmer, Maddison (2013) (Delavan, IL) | Rochester Invitational(IL), 2012-04-21(#3) |
| G-400 | 149 | 1:01.06 | Stone, Hannah (2015) (Tolono Unity, IL) | IL 1A Girls State Prelims(IL), 2012-05-17(#4) |
| G-400 | 150 | 61.10 | Wolldridge, A (Macomb, IL) | John Livingston Relays(IL), 2012-04-12(#3) |
| G-400 | 151 | 1:01.10 | Jones, N'Kia (2013) (Alton, IL) | Alton Girls Invitational(IL), 2012-04-19(#3) |
| G-400 | 151 | 1:01.10 | Eason, Tyjuana (2015) (Kankakee, IL) | Urbana Girls Invitational(IL), 2012-04-27(#2) |
| G-400 | 153 | 1:01.11 | Wolf, Kayla (2013) (Burlington Central, IL) | Mike Vandeever Invitational(IL), 2012-04-14(#2) |
| G-400 | 153 | 1:01.11 | adesanya, lexley (2013) (Naperville North, IL) | Dupage Valley Conference Girls(IL), 2012-05-03(#8) |
| G-400 | 155 | 1:01.13 | Smith, Taylor (2015) (Mattoon, IL) | Urbana Girls Invitational(IL), 2012-04-27(#3) |
| G-400 | 156 | 1:01.14 | Sharpe, Morgan (2014) (Edwardsville, IL) | Southwest Conference Girls(IL), 2012-05-02(#6) |
| G-400 | 157 | 1:01.17 | Baeten, Samantha (2013) (Downers Grove South, IL) | WSC Gold Girls Conference(IL), 2012-05-04(#3) |
| G-400 | 157 | 1:01.17 | Crawley, Danielle (2014) (Sherrard, IL) | West Central Conference(IL), 2012-05-04(#2) |
| G-400 | 159 | 1:01.18 | Sobrino, Elaina (O'Fallon, IL) | Southwest Conference Girls(IL), 2012-05-02(#7) |
| G-400 | 160 | 1:01.20 | Sakach, Julia (2015) (Glenbard West, IL) | Sue Pariseau Invitational(IL), 2012-04-21(#5) |
| G-400 | 161 | 1:01.23 | Hampton, Angelica (2013) (Harlan Community Academy, IL) | CPS Invite #1(IL), 2012-04-14(#2) |
| G-400 | 161 | 1:01.23 | Simon, Sunbright (2013) (Niles West, IL) | IL 3A Niles West Sectional(IL), 2012-05-10(#4) |
| G-400 | 163 | 1:01.28 | Kijowska, Aleksand (Leyden , IL) | IL 3A Lake Park Sectional(IL), 2012-05-10(#3) |
| G-400 | 164 | 1:01.29 | Grossman, Christine (2012) (Prospect, IL) | Mid-Suburban League Girls Conference(IL), 2012-05-04(#5) |
| G-400 | 165 | 1:01.30 | Walton, Kyla (2014) (West Aurora, IL) | Bruce Ritter Invitational(IL), 2012-04-13(#5) |
| G-400 | 165 | 1:01.30 | Capozziello, Tori (2013) (Schaumburg, IL) | IL 3A Bartlett Sectional(IL), 2012-05-11(#8) |
| G-400 | 167 | 1:01.33 | McAsey,Moira (Minooka Community, IL) | Minooka Co Ed Invitational(IL), 2012-04-13(#1) |
| G-400 | 168 | 1:01.35 | Saros, Lily (2013) (Hinsdale Central, IL) | IL 3A Downers Grove North Sectional(IL), 2012-05-10(#4) |
| G-400 | 168 | 1:01.35 | Arends, Paige (Iroquois West, IL) | News Gazette Honor Roll Meet(IL), 2012-05-14(#2) |
| G-400 | 170 | 1:01.36 | Cropsey, Lauren (2015) (Barrington, IL) | IL 3A Grayslake North Sectional(IL), 2012-05-10(#6) |
| G-400 | 171 | 1:01.37 | Griffiths, Emma (2015) (Providence Catholic, IL) | IL 2A Hillcrest Sectional(IL), 2012-05-10(#5) |
| G-400 | 172 | 1:01.38 | Abbott, Megan (2014) (Providence Catholic, IL) | IL 2A Hillcrest Sectional(IL), 2012-05-10(#6) |
| G-400 | 173 | 1:01.39 | Kirk, Kelsey (2012) (Morton, IL) | Mid Illini Girls Conference(IL), 2012-05-03(#1) |
| G-400 | 174 | 1:01.41 | Pearson, Taylor (Vernon Hills, IL) | North Suburban Conference Girls Meet(IL), 2012-05-03(#7) |
| G-400 | 175 | 1:01.46 | Stanton, Ebonee (2013) (Homewood-Flossmoor, IL) | SWSC Blue Girls Conference(IL), 2012-05-03(#4) |
| G-400 | 176 | 1:01.48 | Putnam, Alexa (New Trier Township, IL) | CSL Girls Conference Meet(IL), 2012-05-04(#5) |
| G-400 | 177 | 1:01.49 | Boehme, Hannah (2015) (Taylorville, IL) | Central State 8 Girls Conference(IL), 2012-05-03(#5) |
| G-400 | 178 | 61.49 | Mead, Zoe (2014) (Princeton, IL) | FERRIS CO-ED INVITATIONAL(IL), 2012-04-23(#2) |
| G-400 | 179 | 1:01.50 | Foley, A (Andrew, IL) | Andrew Girls Invitational(IL), 2012-04-07(#3) |
| G-400 | 180 | 1:01.51 | Wheat, Breanne (2013) (Oak Park-River Forest, IL) | IL 3A Girls State Prelims(IL), 2012-05-18(#8) |
| G-400 | 181 | 1:01.52 | Krohn, Francesca (2012) (Barrington, IL) | Mid-Suburban League Girls Conference(IL), 2012-05-04(#7) |
| G-400 | 182 | 1:01.54 | Shrake, Savanah (2013) (Warren Township, IL) | Lake County Girls Invitational(IL), 2012-04-26(#2) |
| G-400 | 183 | 1:01.55 | Franklin, Jada (2013) (Downers Grove South, IL) | IL 3A Downers Grove North Sectional(IL), 2012-05-10(#5) |
| G-400 | 184 | 1:01.57 | Rhea, Katelyn (2014) (Camp Point Central, IL) | IL 1A Girls State Prelims(IL), 2012-05-17(#4) |
| G-400 | 185 | 1:01.58 | Francis, Krystal (2012) (Stockton, IL) | IL 1A Girls State Prelims(IL), 2012-05-17(#4) |
| G-400 | 186 | 1:01.60 | Ignoffo, Hundley (2014) (Geneva, IL) | Upstate 8 River Girls Conference(IL), 2012-05-03(#3) |
| G-400 | 187 | 1:01.63 | Marlow, Ciara (2012) (Monmouth-Roseville, IL) | West Central Conference(IL), 2012-05-04(#3) |
| G-400 | 187 | 1:01.63 | Richards, Paige (2013) (Breese Mater Dei, IL) | IL 1A Girls State Prelims(IL), 2012-05-17(#5) |
| G-400 | 189 | 1:01.65 | Renfroe, Alecsandra (Wheaton North, IL) | Dupage Valley Conference Girls(IL), 2012-05-03(#9) |
| G-400 | 190 | 1:01.66 | Baumert, Emma (Marian Central, IL) | IL 2A Vernon Hills Sectional(IL), 2012-05-11(#4) |
| G-400 | 191 | 1:01.67 | Ferguson, Kelsey (2014) (Morgan Park, IL) | Eastern Relays(KY), 2012-04-28(#14) |
| G-400 | 191 | 1:01.67 | Blumenstein, Alivia (2014) (Hinsdale South, IL) | IL 3A Downers Grove North Sectional(IL), 2012-05-10(#6) |
| G-400 | 193 | 61.69 | Brummet, Amanda (2013) (Riverdale, IL) | Three Rivers Conference(IL), 2012-05-05(#3) |
| G-400 | 194 | 1:01.69 | Simo, Emily (2014) (York Community, IL) | Homewood Flossmoor Girls Invitational(IL), 2012-04-07(#12) |
| G-400 | 195 | 1:01.70 | Tenka, Taylor (2013) (Palatine, IL) | Falcon Blue and Gold Invite(IL), 2012-04-14(#6) |
| G-400 | 195 | 1:01.70 | Palmer, Moriah (2013) (Harlem, IL) | Hononegah Girls Quad(IL), 2012-04-18(#1) |
| G-400 | 195 | 1:01.70 | Eccher, Athena (2014) (O'Fallon, IL) | Alton Girls Invitational(IL), 2012-04-19(#4) |
| G-400 | 195 | 1:01.70 | Brooks, Olivia (2014) (Rock Island, IL) | Western Big 6 Girls Conference(IL), 2012-05-04(#3) |
| G-400 | 195 | 1:01.70 | Wiebe, Lauren (2012) (Francis Parker, IL) | IL 1A Girls State Prelims(IL), 2012-05-17(#4) |
| G-400 | 200 | 1:01.71 | Giulano, Kayla (2014) (Harry D Jacobs, IL) | McHenry County Meet(IL), 2012-04-20(#5) |
| G-400 | 200 | 1:01.71 | Thomas, Emma (2015) (Loyola Academy, IL) | GCAC Championships(IL), 2012-05-05(#3) |
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