| W | World | 47.60 | Marita Koch | GDR | 9/6/1985 | Canberra, AUS |
| U | American | 48.70 | Sandi Richards | Nike | 8/17/2006 | Athens, GRE |
| L | 2014 Winner | 52.77 | Elixis Guster | Iowa | ||
| C | Collegiate | 50.03 | Courtney Okolo | Texas | 4/18/2014 | Lubbock, TX |
| B | Conference Meet | 51.02 | Ashley Spencer | Illinois | 2012 | Madison, WI |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | McGee, Dynasty | SR | Penn State | 53.54 | 53.54 Florida Relays |
| 2 | Powell, Micha | SO | Maryland | 53.92 | 53.92 Florida Relays |
| 3 | Earnheart, Makayla | SO | Purdue | 54.66 | 54.66 Rankin/Poehlein Invitational |
| 4 | Slaughter, Indya | SO | Ohio State | 56.13 | 56.13 Ohio State - Jesse Owens Classic |
| 5 | Roller, Brie | SR | Indiana | 55.86 | 55.86 2015 Billy Hayes Invitational |
| 6 | Rhodes, Tichina | SO | Penn State | 54.98 | 54.98 Kehoe Twilight Meet |
| 7 | Dibernardo, Christina | SR | Rutgers | 57.11 | 57.11 2015 UT Challenge |
| 8 | Davis, Dominique | SR | Maryland | 57.67 | 57.67 Sam Howell Invitational |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | Long, Maya | JR | Michigan | 53.59 | 53.59 UC Irvine Steve Scott Invit(Colleges) |
| 2 | Markland, Titania | SO | Minnesota | 53.71 | 53.71 John McDonnell Invitational |
| 3 | Jones, Aarin | JR | Purdue | 54.88 | 54.88 Rankin/Poehlein Invitational |
| 4 | King, Brittni | SO | Indiana | 56.01 | 56.01 2015 Billy Hayes Invitational |
| 5 | Wiles, Kendell | FR | Indiana | 55.90 | 55.90 ACC-Big Ten Challenge |
| 6 | Waldvogel, Jessica | SR | Minnesota | DQ | 54.93 2015 Triton Invitational |
| 7 | Pratt, Shade | SR | Maryland | 57.15 | 57.15 Kehoe Twilight Meet |
| 8 | Famble, Alayna | JR | Rutgers | 57.39 | 57.39 Larry Ellis (College) |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | Walker, Sonikqua | JR | Ohio State | 52.79 | 52.79 Ohio State - Jesse Owens Classic |
| 2 | Egwim, Emerald | FR | Minnesota | 54.18 | 54.18 John McDonnell Invitational |
| 3 | Barnes, Aaliyah | SO | Ohio State | 54.25 | 54.25 Stanford Invitational |
| 4 | Osborne, Megan | SO | Penn State | 56.33 | 56.33 Kehoe Twilight Meet |
| 5 | Woitzel, Morgan | SO | Nebraska | 55.84 | 55.84 Nebraska Invitational |
| 6 | Onimo, Chinyere | SR | Michigan | 55.67 | 55.67 2015 Arizona State Pac-12 vs Big 10 Invitational |
| 8 | Oak, Lexie | SO | Nebraska | 56.62 | 56.62 Musco Invitational |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | Guster, Elexis | SO | Iowa | 53.30 | 53.30 Mt. SAC Relays |
| 2 | Hannan, Beatrice | FR | Ohio State | 54.17 | 54.17 Ohio State - Jesse Owens Classic |
| 3 | Thomas, Brionna | FR | Purdue | 54.27 | 54.27 2015 Jim Click Shootout |
| 4 | Champe, Sheridan | FR | Iowa | 56.29 | 56.29 Mt. SAC Relays |
| 5 | Heck, Kari | JR | Nebraska | 55.85 | 55.85 Musco Invitational |
| 6 | Anderson, Sydney | SO | Indiana | 55.20 | 55.20 2015 Billy Hayes Invitational |
| 7 | Keller, Kat | SO | Minnesota | 56.70 | 56.70 Musco Invitational |
| 8 | Miller, Chelsey | JR | Michigan | DQ |
| W | World | 47.60 | Marita Koch | GDR | 9/6/1985 | Canberra, AUS |
| U | American | 48.70 | Sandi Richards | Nike | 8/17/2006 | Athens, GRE |
| L | 2014 Winner | 52.77 | Elixis Guster | Iowa | ||
| C | Collegiate | 50.03 | Courtney Okolo | Texas | 4/18/2014 | Lubbock, TX |
| B | Conference Meet | 51.02 | Ashley Spencer | Illinois | 2012 | Madison, WI |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | Powell, Micha | SO | Maryland | 53.68 | 53.92 Florida Relays |
| 2 | Long, Maya | JR | Michigan | 53.57 | 53.59 UC Irvine Steve Scott Invit(Colleges) |
| 3 | Guster, Elexis | SO | Iowa | 53.99 | 53.30 Mt. SAC Relays |
| 4 | Walker, Sonikqua | JR | Ohio State | 52.66 | 52.79 Ohio State - Jesse Owens Classic |
| 5 | Markland, Titania | SO | Minnesota | 53.52 | 53.71 John McDonnell Invitational |
| 6 | Rhodes, Tichina | SO | Penn State | 53.64 | 54.98 Kehoe Twilight Meet |
| 7 | Barnes, Aaliyah | SO | Ohio State | 53.18 | 54.25 Stanford Invitational |
| 8 | McGee, Dynasty | SR | Penn State | 53.72 | 53.54 Florida Relays |