Western Zone Zone Girls 10 & under - 50 Y Back
These rankings show the swimmers' placement within their Zone.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 | |
|---|---|---|---|---|---|---|---|---|---|
| 1951 | Kamilla Langelo | 48.01 | 10 | B Min | BB: 43.29 (+4.72s | 9.8%) | Seattle Metropolitan Aquatic C | 12/06/2025 | 2025 PN Fall Divisionals, Division 1 OCA | |
| 1952 | Manya Kataria | 48.02 | 9 | B Min | BB: 43.29 (+4.73s | 9.9%) | Unattached | 03/22/2025 | 2025 3 22 CDST SC C B BB+ Meet | |
| 1953 | Gwendolyn Leverton | 48.02 | 10 | B Min | BB: 43.29 (+4.73s | 9.9%) | Killer Whales Swim Club | 11/15/2025 | 2025 OR SLST Artman Invitational | |
| 1954 | Evelyn Nochlin | 48.03 | 9 | B Min | BB: 43.29 (+4.74s | 9.9%) | Carson Tigersharks | 10/17/2025 | 2025 KING OF THE HILL CHALLENGE | |
| 1955 | Lucy O'Donnell | 48.03 | 9 | B Min | BB: 43.29 (+4.74s | 9.9%) | Portneuf Valley Swim Team | 07/12/2025 | 2025 Mashed Potato Dash | |
| 1956 | Elaina Nye | 48.04 | 10 | B Min | BB: 43.29 (+4.75s | 9.9%) | Livermore AquaCowboys | 10/18/2025 | PC CDST SC C B BB+ | |
| 1957 | Shayosola Erogbogbo | 48.04 | 10 | B Min | BB: 43.29 (+4.75s | 9.9%) | Alto Swim Club | 02/07/2026 | Alto Feb 7 8 CBA Valentines Day | |
| 1958 | Ava Mahajan | 48.04 | 9 | B Min | BB: 43.29 (+4.75s | 9.9%) | Santa Clara Swim Club | 01/16/2026 | 2026 Brian Malick Memorial Z1S Championships | |
| 1959 | Matilda Coslovich | 48.05 | 9 | B Min | BB: 43.29 (+4.76s | 9.9%) | Burlingame Aquatics | 11/14/2025 | PSL Pumpkin Spice Lovers 25 129 | |
| 1960 | Harper Rymzo | 48.05 | 10 | B Min | BB: 43.29 (+4.76s | 9.9%) | Monterey Bay Swim Club | 01/16/2026 | 2026 Brian Malick Memorial Z1S Championships | |
| 1961 | Alivia Conti | 48.06 | 7 | B Min | BB: 43.29 (+4.77s | 9.9%) | Excel Aquatics | 01/16/2026 | 2026 TYR Mardi Gras Invite | |
| 1962 | Leah Tappero | 48.06 | 9 | B Min | BB: 43.29 (+4.77s | 9.9%) | Portland Aquatic Club | 10/18/2024 | 2024 THSC Fall Invitational | |
| 1963 | Lincoln O'Gorman | 48.06 | 9 | B Min | BB: 43.29 (+4.77s | 9.9%) | Lake Oswego Swim Club | 11/23/2025 | 2025 Dual Meet | |
| 1964 | Frances Crossman | 48.06 | 10 | B Min | BB: 43.29 (+4.77s | 9.9%) | Cascade Swim Club | 02/01/2026 | 2026 PN CSC February Mini Meet Approved | |
| 1965 | Everly Carlson | 48.06 | 9 | B Min | BB: 43.29 (+4.77s | 9.9%) | Eaton Red Waves | 07/09/2025 | 2025 CO NCS 10 U Summer Festival | |
| 1966 | Grace McCormick | 48.07 | 10 | B Min | BB: 43.29 (+4.78s | 9.9%) | Pacific Swim | 01/31/2026 | 2026 SBA All Ages NTS Meet | |
| 1967 | Cora Wall | 48.07 | 9 | B Min | BB: 43.29 (+4.78s | 9.9%) | Pacific Swim | 12/15/2024 | 2024 SI FAST 14U C Meet | |
| 1968 | Evelyn Smith | 48.07 | 9 | B Min | BB: 43.29 (+4.78s | 9.9%) | Fort Collins Area Swim Team | 02/21/2025 | 2025 CO FAST Aquarius Last Chance | |
| 1969 | Genevieve Stockwell | 48.07 | 7 | B Min | BB: 43.29 (+4.78s | 9.9%) | Seattle Metropolitan Aquatic C | 10/18/2025 | 2025 PN VAST Fall Classic | |
| 1970 | Krishala Paidimarri | 48.08 | 10 | B Min | BB: 43.29 (+4.79s | 10.0%) | Los Altos Mountain View Aquati | 10/25/2025 | 2025 SUNN Fall Classic | |
| 1971 | Elizabeth McCauley | 48.09 | 9 | B Min | BB: 43.29 (+4.80s | 10.0%) | Rocky Mountain Rapids | 12/13/2024 | 2024 CO Falfins Holiday Open | |
| 1972 | Alice Nolan | 48.09 | 10 | B Min | BB: 43.29 (+4.80s | 10.0%) | Legacy Aquatics | 11/15/2025 | 2025 OR SLST Artman Invitational | |
| 1973 | Harper Bow | 48.09 | 9 | B Min | BB: 43.29 (+4.80s | 10.0%) | Highlands Ranch Aquatics | 12/13/2024 | 2024 CO Falfins Holiday Open | |
| 1974 | Laila Azarbal | 48.09 | 10 | B Min | BB: 43.29 (+4.80s | 10.0%) | Lake Oswego Swim Club | 02/06/2026 | 2026 Forest Grove Coast Range Qualifier | |
| 1975 | Suri Peng | 48.10 | 10 | B Min | BB: 43.29 (+4.81s | 10.0%) | Sunnyvale Swim Club | 02/22/2025 | De Anza C B A+ | |
| 1976 | Mia Tamura | 48.10 | 8 | B Min | BB: 43.29 (+4.81s | 10.0%) | Sunnyvale Swim Club | 10/11/2025 | 2025 DACA SC CBA Meet | |
| 1977 | Alyssa Wang | 48.10 | 7 | B Min | BB: 43.29 (+4.81s | 10.0%) | DeAnza Cupertino Aquatics | 11/17/2023 | Alto Fall Frolic 2023 | |
| 1978 | Dottie Simon | 48.11 | 9 | B Min | BB: 43.29 (+4.82s | 10.0%) | North Jeffco Swim Team | 12/12/2025 | 2025 CO NJ Blizzard Invite | |
| 1979 | Emily Johnson | 48.11 | 9 | B Min | BB: 43.29 (+4.82s | 10.0%) | Puget Sound Swim Club | 01/31/2026 | 2026 PN BISC Bluefin Invitational | |
| 1980 | Guinevere Walker | 48.13 | 10 | B Min | BB: 43.29 (+4.84s | 10.1%) | Falfins Swimming | 12/19/2025 | 2025 CO Falfins Holiday Open | |
| 1981 | Kyrie Vargas | 48.14 | 8 | B Min | BB: 43.29 (+4.85s | 10.1%) | South Bay Aquatics | 11/21/2025 | 2025 CA MVN Turkey Classic | |
| 1982 | Kamdyn Raymond | 48.14 | 9 | B Min | BB: 43.29 (+4.85s | 10.1%) | Pueblo County Swim Team | 07/25/2025 | 2025 CO SECAL Championships | |
| 1983 | Nora Nicolai | 48.15 | 10 | B Min | BB: 43.29 (+4.86s | 10.1%) | Life Time Oregon Swim Team | 01/02/2026 | 2026 CST Shark Chase Invitational | |
| 1984 | Abigail Vorberg | 48.15 | 10 | B Min | BB: 43.29 (+4.86s | 10.1%) | Southern Utah Swimming Associa | 09/12/2025 | Sep 2025 SUSA Blue Black White Intrasquad | |
| 1985 | Margaret Finn | 48.16 | 9 | B Min | BB: 43.29 (+4.87s | 10.1%) | YMCA Presidio Aquatics | 11/15/2025 | NVST Swimming Into Fall 2025 | |
| 1986 | Eliza Vavrichek | 48.17 | 7 | B Min | BB: 43.29 (+4.88s | 10.1%) | Olympic Cascade Aquatics | 10/18/2025 | 2025 PN VAST Fall Classic | |
| 1987 | Liv Wilhelmsen | 48.17 | 9 | B Min | BB: 43.29 (+4.88s | 10.1%) | South Davis Aquatics Team | 02/22/2025 | Time Trial Feb 22 SDAT | |
| 1988 | Brooklynn McQueen | 48.17 | 7 | B Min | BB: 43.29 (+4.88s | 10.1%) | Apex | 12/12/2025 | 2025 OR TTSC Holiday Invitational Meet | |
| 1989 | Maria Snow | 48.17 | 8 | B Min | BB: 43.29 (+4.88s | 10.1%) | Jcc Jellyfish Club | 11/07/2024 | 2024 OA Thanksgiving Turkey Meet | |
| 1990 | Emma McDougall | 48.18 | 9 | B Min | BB: 43.29 (+4.89s | 10.1%) | Coronado Swim -team Elite | 01/31/2026 | 2026 SBA All Ages NTS Meet | |
| 1991 | Courtney Carroll | 48.19 | 9 | B Min | BB: 43.29 (+4.90s | 10.2%) | Fort Collins Area Swim Team | 02/08/2025 | 2025 CO NCS 10 U Winter Spectacular | |
| 1992 | Audrey Moore | 48.19 | 8 | B Min | BB: 43.29 (+4.90s | 10.2%) | Aquawolves Swimming | 01/16/2026 | 2026 CO CUDA Classic | |
| 1993 | Liv Hughes | 48.19 | 10 | B Min | BB: 43.29 (+4.90s | 10.2%) | Seattle Metropolitan Aquatic C | 10/04/2025 | 2025 PN SMAC Fall Kick Off Invitational | |
| 1994 | Lyra Helfman | 48.20 | 9 | B Min | BB: 43.29 (+4.91s | 10.2%) | Cascade Swim Club | 02/01/2026 | 2026 PN CSC February Mini Meet Approved | |
| 1995 | Stella Deng | 48.20 | 8 | B Min | BB: 43.29 (+4.91s | 10.2%) | West Coast Aquatics | 02/07/2026 | 2026 PN IST Feb Winter Invitational Approved | |
| 1996 | Alder Clayton | 48.21 | 9 | B Min | BB: 43.29 (+4.92s | 10.2%) | College Area Swim Team | 11/08/2025 | HSA All Ages NTS | |
| 1997 | Evelyn Tan | 48.21 | 10 | B Min | BB: 43.29 (+4.92s | 10.2%) | Palo Alto Stanford Aquatics | 10/25/2025 | TYR BAC SPOOKY FALL CLASSIC | |
| 1998 | Jamison Antalek | 48.22 | 8 | B Min | BB: 43.29 (+4.93s | 10.2%) | Highlands Ranch Aquatics | 12/19/2025 | 2025 CO Falfins Holiday Open | |
| 1999 | Allison Zhang | 48.22 | 9 | B Min | BB: 43.29 (+4.93s | 10.2%) | Rancho Family YMCA | 04/12/2025 | 2025 SBA BC Meet | |
| 2000 | Noa Fongemie | 48.23 | 10 | B Min | BB: 43.29 (+4.94s | 10.2%) | Aquatic Foundation of Alaska | 11/21/2025 | NLSC Sprint Classic | |
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.