USA Girls 10 & under - 50 M Breast
These rankings show the swimmers' placement within the United States.They are based on the swimmer's personal best, their current age category, and team; and are calculated from all the meets results.
For each swimmer, you can find the swimmer's ranking, their best time, the corresponding time standard, as well as how much faster the swimmer needs to be to reach the next level. The last columns provide information about the event they achieved this personal best.
Swimmer Rankings
| Ranking | Name | Time | Age | Standard | to Next Standard | Team | Date | Meet | |
|---|---|---|---|---|---|---|---|---|---|
| 451 | Kai-Ning Sun | 54.35 | 10 | BB Min | A: 48.79 (+5.56s | 10.2%) | Aquajets Swim Team | 07/18/2025 | 2025 MN MTKA Minnesota Regional Championship | |
| 452 | Whitnee Jacobson | 54.39 | 10 | BB Min | A: 48.79 (+5.60s | 10.3%) | Red Wing Swim Club | 07/18/2025 | 2025 MN MTKA Minnesota Regional Championship | |
| 453 | Katelyn DeGroff | 54.39 | 10 | BB Min | A: 48.79 (+5.60s | 10.3%) | United Swim Club | 06/27/2025 | ATAC Long Course | |
| 454 | Kimberly Lawson | 54.40 | 9 | BB Min | A: 48.79 (+5.61s | 10.3%) | T2 Aquatics | 06/21/2025 | 2025 T2 June Saturday Showcase | |
| 455 | Viola Rizzardi | 54.42 | 10 | BB Min | A: 48.79 (+5.63s | 10.3%) | Accokeek Stroke Technique Swim | 08/06/2025 | 2025 Summer Elite Showcase | |
| 456 | Elizabeth Lieberman | 54.45 | 9 | BB Min | A: 48.79 (+5.66s | 10.4%) | Bolles School Sharks | 06/20/2025 | 2025 Planet Swim Summer Championships | |
| 457 | Amanda Wu | 54.45 | 9 | BB Min | A: 48.79 (+5.66s | 10.4%) | Alto Swim Club | 07/19/2025 | Alto Last Splash | |
| 458 | Arya Coates | 54.52 | 10 | BB Min | A: 48.79 (+5.73s | 10.5%) | The Olympic Club | 05/30/2025 | VJO S Tuffy Williams Summer Kickoff Classic | |
| 459 | Vivian Johnson | 54.52 | 8 | BB Min | A: 48.79 (+5.73s | 10.5%) | Hastings Area Swim Team | 06/13/2025 | 2025 MN RSC Summerfest | |
| 460 | Alejandra Garvin | 54.53 | 10 | BB Min | A: 48.79 (+5.74s | 10.5%) | Clovis Swim Club | 06/21/2025 | 2025 FDST June A B Modified LC Invitational | |
| 461 | Camden Smiley | 54.61 | 9 | BB Min | A: 48.79 (+5.82s | 10.7%) | Spokane Waves Aquatic Team | 07/25/2025 | 2025 IES LC CHAMPIONSHIPS | |
| 462 | Maci Imperi | 54.61 | 10 | BB Min | A: 48.79 (+5.82s | 10.7%) | Gator Swim Club | 06/06/2025 | 2025 MAKOS Summer Splash | |
| 463 | Naomi Freehill | 54.61 | 10 | BB Min | A: 48.79 (+5.82s | 10.7%) | Aquatex Swim & Water Polo Team | 06/20/2025 | 2025 ST AAAA NS George Block Invite | |
| 464 | Finley Sciarrotta | 54.62 | 10 | BB Min | A: 48.79 (+5.83s | 10.7%) | Lincoln City Swim Club | 03/07/2026 | Valley Coast Swim League 2026 | |
| 465 | Kyra Blunck | 54.62 | 10 | BB Min | A: 48.79 (+5.83s | 10.7%) | Austin Swim Club | 05/31/2025 | 2025 ST ASC June Bug | |
| 466 | Carter Krouse | 54.63 | 10 | BB Min | A: 48.79 (+5.84s | 10.7%) | The Olympic Club | 06/21/2025 | NVST Last Chance AG Champs Summer Plunge 2025 | |
| 467 | Addison Barham | 54.65 | 10 | BB Min | A: 48.79 (+5.86s | 10.7%) | St. Thomas Swimming Associatio | 06/12/2025 | 2025 RAFC Summer Solstice | |
| 468 | Allison Tjhin | 54.65 | 10 | BB Min | A: 48.79 (+5.86s | 10.7%) | Diablo Aquatics | 05/24/2025 | 2025 Tiger Aquatics C B BB+ Memorial Day Meet | |
| 469 | Genevieve Brandstatter | 54.65 | 9 | BB Min | A: 48.79 (+5.86s | 10.7%) | Blackline Aquatics | 07/23/2025 | 2025 MN NSAC 10 U LC State Championship | |
| 470 | Clara Cederholm | 54.67 | 9 | BB Min | A: 48.79 (+5.88s | 10.8%) | Olympus Aquatics | 07/17/2025 | 2025 UTAGS LC Championships | |
| 471 | Amelia White | 54.67 | 10 | BB Min | A: 48.79 (+5.88s | 10.8%) | H2okie Aquatics | 07/12/2024 | 2024 CCA Summer Awards | |
| 472 | Vasilisa Rusetskaya | 54.68 | 9 | BB Min | A: 48.79 (+5.89s | 10.8%) | Freedom Aquatics | 08/06/2025 | 2025 Summer Elite Showcase | |
| 473 | Jane Kelly | 54.69 | 10 | BB Min | A: 48.79 (+5.90s | 10.8%) | Cali Piranha Swim Team | 07/24/2025 | 2025 SI LC AG CHAMPS | |
| 474 | Lucia Lin | 54.72 | 10 | BB Min | A: 48.79 (+5.93s | 10.8%) | Sunnyvale Swim Club | 06/06/2025 | 2025 DACA LC CBA+ Meet | |
| 475 | Lily Purcell | 54.75 | 10 | BB Min | A: 48.79 (+5.96s | 10.9%) | Multnomah Athletic Club | 07/12/2025 | 2025 OSI Arena Summer LC 10 U Championships | |
| 476 | Aubree Charlesworth | 54.76 | 9 | BB Min | A: 48.79 (+5.97s | 10.9%) | Maverick Aquatics | 07/11/2025 | 2025 CO Western Slope LeagueChampionships | |
| 477 | Isla Brown | 54.81 | 10 | BB Min | A: 48.79 (+6.02s | 11.0%) | Monterey Bay Swim Club | 05/23/2025 | Zone 1 South May Firecracker 500 | |
| 478 | Lucy Lu | 54.85 | 10 | BB Min | A: 48.79 (+6.06s | 11.0%) | Tri-city Channel Cats | 06/06/2025 | 2025 TRI CITY INVITATIONAL | |
| 479 | Azadeh Corsiglia | 54.85 | 10 | BB Min | A: 48.79 (+6.06s | 11.0%) | DeAnza Cupertino Aquatics | 06/06/2025 | 2025 DACA LC CBA+ Meet | |
| 480 | Addelyn Rausch | 54.85 | 10 | BB Min | A: 48.79 (+6.06s | 11.0%) | Brookings Swim Club | 07/18/2025 | 2025 SD State Long Course Meet | |
| 481 | Doreen Zhang | 54.86 | 10 | BB Min | A: 48.79 (+6.07s | 11.1%) | Santa Clara Swim Club | 06/27/2025 | Valley Splash | |
| 482 | Harlow Redson | 54.86 | 10 | BB Min | A: 48.79 (+6.07s | 11.1%) | North Jeffco Swim Team | 07/25/2025 | 2025 CO CSI Age Group Championships | |
| 483 | Claire Liang | 54.90 | 10 | BB Min | A: 48.79 (+6.11s | 11.1%) | DeAnza Cupertino Aquatics | 06/06/2025 | 2025 DACA LC CBA+ Meet | |
| 484 | Catherine Li | 54.94 | 10 | BB Min | A: 48.79 (+6.15s | 11.2%) | California Dolphins Swim Team | 06/07/2025 | 2025 06 07 CDST LC C B BB+ Meet | |
| 485 | Penelope Arambula | 54.94 | 10 | BB Min | A: 48.79 (+6.15s | 11.2%) | Capital of Texas Aquatics | 06/08/2025 | 2025 ST TXLA 14 U Sprint Cup | |
| 486 | Daphne Zhang | 54.95 | 10 | BB Min | A: 48.79 (+6.16s | 11.2%) | Nova of Virginia | 05/17/2024 | Freedom Splash | |
| 487 | Emilie Bieker | 54.95 | 10 | BB Min | A: 48.79 (+6.16s | 11.2%) | Legacy Aquatics | 11/01/2025 | Oregon City Fall Open 2025 | |
| 488 | Ayelet Tindall | 55.00 | 10 | BB Min | A: 48.79 (+6.21s | 11.3%) | Blue Dolfins | 04/26/2025 | 2025 Ron Nardozzi Pre Derby Sprint Invite | |
| 489 | Myra Hulbert | 55.00 | 9 | BB Min | A: 48.79 (+6.21s | 11.3%) | Cascade Swim Club | 07/24/2025 | 2025 PN LC 12 U Championships | |
| 490 | Madison Duckworth | 55.01 | 10 | BB Min | A: 48.79 (+6.22s | 11.3%) | Wasatch Front Fish Market | 05/02/2025 | 2025 UVrays LC May Invitational | |
| 491 | Sophia Lukkes | 55.03 | 10 | BB Min | A: 48.79 (+6.24s | 11.3%) | Pierre Swim Team | 07/18/2025 | 2025 SD State Long Course Meet | |
| 492 | Cecelia Staples | 55.05 | 10 | BB Min | A: 48.79 (+6.26s | 11.4%) | Bolles School Sharks | 07/25/2025 | 2025 Area 1 LCM Championships | |
| 493 | Zoe Wang | 55.06 | 9 | BB Min | A: 48.79 (+6.27s | 11.4%) | Hydro Swim Club | 06/20/2025 | 2025 Planet Swim Summer Championships | |
| 494 | Avery Bacci | 55.09 | 9 | BB Min | A: 48.79 (+6.30s | 11.4%) | Seattle Metropolitan Aquatic C | 05/31/2025 | 2025 PN VAST Summer Sprints And Distance Chal | |
| 495 | Alayna Behrendsen | 55.10 | 10 | BB Min | A: 48.79 (+6.31s | 11.5%) | Spartan Aquatic Club | 07/25/2025 | 2025 Area 1 LCM Championships | |
| 496 | Zoe Lau | 55.12 | 9 | BB Min | A: 48.79 (+6.33s | 11.5%) | Vallejo Aquatic Club | 05/30/2025 | VJO S Tuffy Williams Summer Kickoff Classic | |
| 497 | Elena Hynst | 55.12 | 10 | BB Min | A: 48.79 (+6.33s | 11.5%) | SwimRVA | 06/27/2024 | NOVA Firecracker Classic | |
| 498 | Valentina Gentili | 55.14 | 10 | BB Min | A: 48.79 (+6.35s | 11.5%) | Tampa Bay Aquatic Club | 05/16/2025 | 2025 SAINT PETE S 2nd LONG COURSE MEET | |
| 499 | Zoe Horn | 55.15 | 10 | BB Min | A: 48.79 (+6.36s | 11.5%) | Bainbridge Island Swim Club | 06/27/2025 | 2025 PN SMAC Summer Classic Invitational | |
| 500 | Olive Mitchell | 55.16 | 9 | BB Min | A: 48.79 (+6.37s | 11.5%) | Newport Swim Team | 11/14/2025 | Pumpkin Sprint Meet 2025 | |
Disclaimer: This Website is not affiliated with USA Swimming or any Local Swim Committee. The rankings and times displayed on this website are unofficial and should not be viewed as such. We update our information regularly, but we cannot guarantee that the data is accurate, timely, or complete. The only purpose of this website is entertainment. None of the information here should be used for university admission applications.