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 | |
|---|---|---|---|---|---|---|---|---|---|
| 2001 | Katherine Du | 56.06 | 10 | B Min | BB: 55.49 (+0.57s | 1.0%) | Nitro Swimming | 06/26/2026 | 2026 NEAT Long Course STX Championship | |
| 2002 | Cailyn Reese | 56.07 | 10 | B Min | BB: 55.49 (+0.58s | 1.0%) | Stingrays Swim Team | 06/12/2026 | 2026 SwimRVA Summer Invitational | |
| 2003 | Eloise Maghanoy | 56.08 | 10 | B Min | BB: 55.49 (+0.59s | 1.1%) | Falfins Swimming | 06/19/2026 | 2026 CO Falfins Long Course Open | |
| 2004 | Ishka Patel | 56.08 | 10 | B Min | BB: 55.49 (+0.59s | 1.1%) | Tac Titans | 05/22/2026 | 2026 TAC TITANS Memorial Day Meet | |
| 2005 | April Ayers | 56.09 | 10 | B Min | BB: 55.49 (+0.60s | 1.1%) | Sporting Jax Aquatic Club | 05/02/2026 | SwimRise IMX IMR Challenge | |
| 2006 | Serena Kindel | 56.09 | 10 | B Min | BB: 55.49 (+0.60s | 1.1%) | Mecklenburg Swim Association | 04/25/2026 | 2026 MSA April LC Meet | |
| 2007 | Delaney Timmons | 56.09 | 10 | B Min | BB: 55.49 (+0.60s | 1.1%) | Neptune Swimming | 06/12/2026 | Neptune Swimming June LC Meet | |
| 2008 | Colleen Olson | 56.10 | 9 | B Min | BB: 55.49 (+0.61s | 1.1%) | New Orleans Aquatics | 05/02/2026 | 2026 GPAC Flip Flop Invitational | |
| 2009 | Sylvie Hulton | 56.10 | 10 | B Min | BB: 55.49 (+0.61s | 1.1%) | Amherst Tritons Swim Team | 05/08/2026 | 2026 NE CRA MIT Team Specialty LC Meet | |
| 2010 | Miya Daley | 56.11 | 10 | B Min | BB: 55.49 (+0.62s | 1.1%) | Aulea Swim Club | 06/06/2026 | 2026 15th Annual Wada Rainbow Invitational | |
| 2011 | Emily Shea | 56.11 | 10 | B Min | BB: 55.49 (+0.62s | 1.1%) | La Crosse Area Family YMCA Swi | 05/30/2026 | 2026 MN RSC Summer Jam | |
| 2012 | Clara Gouge | 56.11 | 10 | B Min | BB: 55.49 (+0.62s | 1.1%) | Bolles School Sharks | 05/22/2026 | EAJ Mayhem 2026 | |
| 2013 | Bridget Crace | 56.11 | 10 | B Min | BB: 55.49 (+0.62s | 1.1%) | Unattached | 06/26/2026 | 2026 NEAT Long Course STX Championship | |
| 2014 | Sophia Eleryan | 56.11 | 10 | B Min | BB: 55.49 (+0.62s | 1.1%) | Pro Swimming | 05/15/2026 | 2026 PN IST Sockeye Springtime Madness App | |
| 2015 | Nora Profumo | 56.12 | 8 | B Min | BB: 55.49 (+0.63s | 1.1%) | Saint Petersburg Aquatics | 04/17/2026 | 2026 SAINT PETE S 1st LONG COURSE MEET | |
| 2016 | Andie Olive | 56.12 | 10 | B Min | BB: 55.49 (+0.63s | 1.1%) | Bulldog Aquatic Club | 06/26/2026 | 2026 Dick Fadgen Tiger Classic | |
| 2017 | Alexa Perea | 56.14 | 10 | B Min | BB: 55.49 (+0.65s | 1.2%) | Rattlers Swim Club | 05/16/2026 | 2026 BD SWAT School S Out Summer Bash | |
| 2018 | Maryam Delic | 56.14 | 9 | B Min | BB: 55.49 (+0.65s | 1.2%) | Csp Tideriders | 04/17/2026 | 2026 METS Long Course Kickoff | |
| 2019 | Harper Sanders | 56.14 | 10 | B Min | BB: 55.49 (+0.65s | 1.2%) | Northwest Arkansas Aquatics | 06/26/2026 | 2026 HSA June Invitational | |
| 2020 | Evelyn Ma | 56.15 | 9 | B Min | BB: 55.49 (+0.66s | 1.2%) | Arctic Aquatics | 06/12/2026 | 2026 NE CS Summer Solstice | |
| 2021 | Quinn Eisenbraun | 56.16 | 9 | B Min | BB: 55.49 (+0.67s | 1.2%) | Edina Swim Club | 05/03/2026 | 2026 MN SEMS LC Invite | |
| 2022 | Laila Williams | 56.16 | 8 | B Min | BB: 55.49 (+0.67s | 1.2%) | Riptide Swim Team | 05/29/2026 | 2026 CO Barracuda Summer Sizzler Invite | |
| 2023 | Ruyi Yin | 56.16 | 8 | B Min | BB: 55.49 (+0.67s | 1.2%) | Burlingame Aquatics | 05/02/2026 | Alto Spring Jam CBA | |
| 2024 | Zoya Kennedy | 56.17 | 9 | B Min | BB: 55.49 (+0.68s | 1.2%) | Excel Aquatics | 05/15/2026 | 2026 Officially Summer Invitational | |
| 2025 | Layla Ferguson | 56.17 | 9 | B Min | BB: 55.49 (+0.68s | 1.2%) | Just Care Aquatics Tritons | 05/16/2026 | 2026 BD SWAT School S Out Summer Bash | |
| 2026 | Emilia Miller | 56.18 | 10 | B Min | BB: 55.49 (+0.69s | 1.2%) | Wave Aquatics | 05/01/2026 | 2026 PN BC May Flowers Approved | |
| 2027 | Annie Zhang | 56.19 | 10 | B Min | BB: 55.49 (+0.70s | 1.2%) | Northern Colorado Swim Club | 05/02/2026 | 2026 CO Longmont IMR IMX Adrenaline Gauntlet | |
| 2028 | Tanvika Kumar | 56.20 | 10 | B Min | BB: 55.49 (+0.71s | 1.3%) | Front Range Barracudas | 05/29/2026 | 2026 CO Barracuda Summer Sizzler Invite | |
| 2029 | Miori Lewallen | 56.20 | 10 | B Min | BB: 55.49 (+0.71s | 1.3%) | Saluki Swim Club | 04/11/2026 | 2026 Saluki International | |
| 2030 | Micah Houchin | 56.21 | 10 | B Min | BB: 55.49 (+0.72s | 1.3%) | Raleigh Swimming Association | 04/24/2026 | 2026 RSA Warm Up To LC Copied Copied | |
| 2031 | Vivian Andiola | 56.21 | 9 | B Min | BB: 55.49 (+0.72s | 1.3%) | Nova of Virginia | 04/17/2026 | NOVA Long Course Kick Off | |
| 2032 | Kelsey Van Wagner | 56.21 | 9 | B Min | BB: 55.49 (+0.72s | 1.3%) | YMCA of Austin Swim Alliance | 06/26/2026 | 2026 NEAT Long Course STX Championship | |
| 2033 | Adeline Gray | 56.21 | 10 | B Min | BB: 55.49 (+0.72s | 1.3%) | Occoquan Swimming | 05/01/2026 | Speedo Spring Splash | |
| 2034 | Eva Saez Oliva | 56.22 | 9 | B Min | BB: 55.49 (+0.73s | 1.3%) | Hurricane Aquatics | 05/15/2026 | 2026 Gulliver LCM Summer Classic | |
| 2035 | Natalee Thrasher | 56.22 | 10 | B Min | BB: 55.49 (+0.73s | 1.3%) | Boca Raton Swim Team | 06/06/2026 | 18th Annual LC NPB Summer Kickoff | |
| 2036 | Kanna Matsushita | 56.22 | 10 | B Min | BB: 55.49 (+0.73s | 1.3%) | Tac Titans | 06/19/2026 | 2026 TAC TITANS Summer Trident Meet | |
| 2037 | Sena Ishihara | 56.23 | 7 | B Min | BB: 55.49 (+0.74s | 1.3%) | H2okie Aquatics | 05/01/2026 | 2026 HOKI May Day Invite Copied | |
| 2038 | Lily Mitchell | 56.23 | 10 | B Min | BB: 55.49 (+0.74s | 1.3%) | Merritt Athletic Swimming | 05/29/2026 | 2026 FOX Speedo Summer Spectacular Meet | |
| 2039 | Carolina Cumptan | 56.23 | 9 | B Min | BB: 55.49 (+0.74s | 1.3%) | Birmingham Swim League | 06/06/2026 | 2026 Jack Barnasastle Invitational | |
| 2040 | Ella Reed | 56.24 | 9 | B Min | BB: 55.49 (+0.75s | 1.3%) | Lake Oswego Swim Club | 05/22/2026 | 2026 THSC Memorial Weekend Meet | |
| 2041 | Claire Niu | 56.25 | 10 | B Min | BB: 55.49 (+0.76s | 1.4%) | Issaquah Swim Team | 06/13/2026 | 2026 PN IST June Invtational Approved | |
| 2042 | Emma Rhee | 56.25 | 10 | B Min | BB: 55.49 (+0.76s | 1.4%) | Columbia Aquatics Association | 06/13/2026 | 2026 CAC Schools Out For Summer LCM Swim Meet | |
| 2043 | Maya Kiryanov | 56.26 | 10 | B Min | BB: 55.49 (+0.77s | 1.4%) | Wind N Sea Swim Team | 06/06/2026 | 2026 SI JBST SPLASH DASH MAX | |
| 2044 | Eliana Massaro | 56.26 | 10 | B Min | BB: 55.49 (+0.77s | 1.4%) | Clovis Swim Club | 05/24/2025 | 2025 Mike Snyder Memorial | |
| 2045 | Addison Moutafis | 56.26 | 10 | B Min | BB: 55.49 (+0.77s | 1.4%) | Mecklenburg Swim Association | 06/05/2026 | 2026 TEAM School S Out Summer Invite | |
| 2046 | Riley Tumblin | 56.27 | 9 | B Min | BB: 55.49 (+0.78s | 1.4%) | Excel Aquatics | 05/15/2026 | 2026 Officially Summer Invitational | |
| 2047 | Janell Johnson | 56.27 | 9 | B Min | BB: 55.49 (+0.78s | 1.4%) | Alamo Area Aquatic Association | 05/01/2026 | 2026 ST AAAA 23rd Annual Cinco De Mayo | |
| 2048 | Leah Wang | 56.27 | 9 | B Min | BB: 55.49 (+0.78s | 1.4%) | South San Francisco Aquatics | 06/12/2026 | BAC Long Course | |
| 2049 | Hadley Carne | 56.28 | 10 | B Min | BB: 55.49 (+0.79s | 1.4%) | Lakeridge Swim Team | 05/22/2026 | 2026 Intermountain Classic Long Course Meet | |
| 2050 | Lyla Solomon | 56.29 | 10 | B Min | BB: 55.49 (+0.80s | 1.4%) | Columbia Aquatics Association | 06/13/2026 | 2026 CAC Schools Out For Summer LCM Swim Meet | |
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.