USA Girls 10 & under - 50 M Back
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 | |
|---|---|---|---|---|---|---|---|---|---|
| 1051 | Katelyn Pederson | 49.34 | 10 | BB Min | A: 43.59 (+5.75s | 11.7%) | Bellingham Bay Swim Team | 04/24/2026 | 2026 PN SMAC Spring Showers LC Challenge | |
| 1052 | Alexandra Hirsch | 49.34 | 10 | BB Min | A: 43.59 (+5.75s | 11.7%) | Aquajets Swim Team | 07/18/2025 | 2025 MN MTKA Minnesota Regional Championship | |
| 1053 | Natalie Camfferman | 49.35 | 10 | BB Min | A: 43.59 (+5.76s | 11.7%) | Castle Rock Swimming | 05/02/2026 | 2026 CO Longmont IMR IMX Adrenaline Gauntlet | |
| 1054 | Gianna Yurkschatt | 49.36 | 8 | BB Min | A: 43.59 (+5.77s | 11.7%) | SwimStrongsville | 05/16/2025 | Busbey Invitational 2025 | |
| 1055 | Isabel Bolt | 49.36 | 9 | BB Min | A: 43.59 (+5.77s | 11.7%) | Beaverton Area Aquatics Club | 05/01/2026 | 2026 THSC Spring Invite | |
| 1056 | Adalyn Peng | 49.36 | 9 | BB Min | A: 43.59 (+5.77s | 11.7%) | Monterey Bay Swim Club | 06/21/2025 | 2025 FDST June A B Modified LC Invitational | |
| 1057 | Claire Palmer | 49.36 | 9 | BB Min | A: 43.59 (+5.77s | 11.7%) | SwimStrongsville | 05/16/2025 | Busbey Invitational 2025 | |
| 1058 | Rachel Ellis | 49.37 | 9 | BB Min | A: 43.59 (+5.78s | 11.7%) | South Valley Makos | 05/23/2025 | Zone 1 South May Firecracker 500 | |
| 1059 | Camille Thorp | 49.37 | 9 | BB Min | A: 43.59 (+5.78s | 11.7%) | Rocky Mountain Rapids | 05/02/2026 | 2026 CO Longmont IMR IMX Adrenaline Gauntlet | |
| 1060 | Mila Monroe | 49.38 | 9 | BB Min | A: 43.59 (+5.79s | 11.7%) | Boulder City Henderson Swim Te | 03/30/2025 | Sand Vs BCH LCM Dual 2025 | |
| 1061 | Adar Van Horn | 49.38 | 8 | BB Min | A: 43.59 (+5.79s | 11.7%) | Bellevue Club Swim Team | 05/01/2026 | 2026 PN BC May Flowers Approved | |
| 1062 | Olivia Ward | 49.38 | 10 | BB Min | A: 43.59 (+5.79s | 11.7%) | Swim Florida | 05/02/2026 | 2026 Sea Dragon May Open | |
| 1063 | Zoe Beseres | 49.39 | 9 | BB Min | A: 43.59 (+5.80s | 11.7%) | Minnetonka Swim Club | 05/15/2026 | 2026 MN HURR LC Spring Opener | |
| 1064 | Eleanor Farniok | 49.39 | 10 | BB Min | A: 43.59 (+5.80s | 11.7%) | Velocity Aquatics | 07/18/2025 | 2025 MN MAN Minnesota Regional Championship | |
| 1065 | Henrietta Ostendorf | 49.39 | 10 | BB Min | A: 43.59 (+5.80s | 11.7%) | Minnetonka Swim Club | 07/12/2025 | 2025 MN BAC Last Chance Invitational | |
| 1066 | Vail Christianson | 49.39 | 10 | BB Min | A: 43.59 (+5.80s | 11.7%) | Aspire Aquatics of Colorado | 06/27/2025 | 2025 CO Zone 2 VMAC Meet | |
| 1067 | Rosie Olson | 49.39 | 9 | BB Min | A: 43.59 (+5.80s | 11.7%) | Riptide Swim Team | 05/02/2026 | 2026 MN RSC Pentathlon | |
| 1068 | Kate Lindhaus | 49.40 | 9 | BB Min | A: 43.59 (+5.81s | 11.8%) | Tualatin Hills Swim Club | 07/05/2025 | 2025 OR CRST Summer Blast 3 | |
| 1069 | Molly Hall | 49.41 | 10 | BB Min | A: 43.59 (+5.82s | 11.8%) | Front Range Barracudas | 04/24/2026 | 2026 CO Steve Drozda LC Shotgun | |
| 1070 | Madhuri Mukhram | 49.41 | 10 | BB Min | A: 43.59 (+5.82s | 11.8%) | Bellingham Bay Swim Team | 04/24/2026 | 2026 PN SMAC Spring Showers LC Challenge | |
| 1071 | Callie Gould | 49.42 | 10 | BB Min | A: 43.59 (+5.83s | 11.8%) | Pikes Peak Athletics | 05/30/2025 | 2025 CO Barracuda Summer Sizzler Invite | |
| 1072 | Sofia Kim | 49.42 | 9 | BB Min | A: 43.59 (+5.83s | 11.8%) | Asphalt Green Unified Aquatics | 08/06/2025 | 2025 Summer Elite Showcase | |
| 1073 | Scarlett Clauer | 49.42 | 10 | BB Min | A: 43.59 (+5.83s | 11.8%) | Longhorn Aquatics | 05/10/2026 | 2026 ST TXLA 10 U End Of School Splash | |
| 1074 | Stella Evans | 49.43 | 10 | BB Min | A: 43.59 (+5.84s | 11.8%) | College Area Swim Team | 04/24/2026 | 2026 SI PS ABB Meet Group A | |
| 1075 | Quinn Hughes | 49.44 | 10 | BB Min | A: 43.59 (+5.85s | 11.8%) | Four Corners Aquatic Team | 06/19/2025 | 2025 CO Grand Junction Invitational | |
| 1076 | Emersyn Forbes | 49.44 | 10 | BB Min | A: 43.59 (+5.85s | 11.8%) | Blue Wave Swimming | 05/15/2026 | 2026 SAINT PETE S 2nd LONG COURSE MEET | |
| 1077 | Lillian Zhao | 49.45 | 9 | BB Min | A: 43.59 (+5.86s | 11.9%) | Cascadia Swimming | 04/17/2026 | 2026 MAC LONG COURSE INVITATIONAL | |
| 1078 | Veronika Ryzhkova | 49.45 | 10 | BB Min | A: 43.59 (+5.86s | 11.9%) | Nitro Swimming | 05/09/2026 | 2026 ST NTRO LC School S Out | |
| 1079 | Avery Kotlarczyk | 49.45 | 10 | BB Min | A: 43.59 (+5.86s | 11.9%) | Flatiron Athletic Club | 04/24/2026 | 2026 CO Steve Drozda LC Shotgun | |
| 1080 | Olive Gwynn | 49.47 | 10 | BB Min | A: 43.59 (+5.88s | 11.9%) | Hilltop Aquatic Swim Team | 05/08/2025 | 2025 HAST Janet Oles LC Classic | |
| 1081 | Emery Patterson | 49.48 | 10 | BB Min | A: 43.59 (+5.89s | 11.9%) | Beaverton Area Aquatics Club | 04/17/2026 | 2026 MAC LONG COURSE INVITATIONAL | |
| 1082 | Eliza Sturm | 49.48 | 10 | BB Min | A: 43.59 (+5.89s | 11.9%) | Hurricane Aquatics | 05/15/2026 | 2026 Gulliver LCM Summer Classic | |
| 1083 | Adalyn King | 49.49 | 10 | BB Min | A: 43.59 (+5.90s | 11.9%) | Fort Collins Area Swim Team | 04/12/2025 | Cuda V FAST | |
| 1084 | Reese Webley | 49.51 | 10 | BB Min | A: 43.59 (+5.92s | 12.0%) | Chinook Aquatic Club | 05/02/2025 | 2025 PN BC May Flowers | |
| 1085 | Amelia Athanassious | 49.51 | 10 | BB Min | A: 43.59 (+5.92s | 12.0%) | Neptune Swimming | 07/11/2025 | 2025 Age Group Championships | |
| 1086 | Ana O'Hara | 49.51 | 9 | BB Min | A: 43.59 (+5.92s | 12.0%) | Saint Petersburg Aquatics | 05/15/2026 | 2026 SAINT PETE S 2nd LONG COURSE MEET | |
| 1087 | Vivian Clark | 49.51 | 10 | BB Min | A: 43.59 (+5.92s | 12.0%) | Florida West Coast Aquatics | 05/15/2026 | 2026 SAINT PETE S 2nd LONG COURSE MEET | |
| 1088 | Emma Roberts | 49.52 | 10 | BB Min | A: 43.59 (+5.93s | 12.0%) | Life Time Colorado Swim Club | 05/30/2025 | 2025 CO Barracuda Summer Sizzler Invite | |
| 1089 | Amanda Wu | 49.52 | 9 | BB Min | A: 43.59 (+5.93s | 12.0%) | Alto Swim Club | 07/19/2025 | Alto Last Splash | |
| 1090 | Wren Hegner | 49.53 | 10 | BB Min | A: 43.59 (+5.94s | 12.0%) | Loveland Swim Club | 07/11/2025 | 2025 CO NCS Gold District Championships | |
| 1091 | Ariya Ajay | 49.54 | 9 | BB Min | A: 43.59 (+5.95s | 12.0%) | California Dolphins Swim Team | 04/25/2026 | San Ramon Valley Aquatics Long Course C B BB+ | |
| 1092 | Maya Heczey | 49.54 | 8 | BB Min | A: 43.59 (+5.95s | 12.0%) | Olympic Cascade Aquatics | 05/15/2026 | 2026 PN IST Sockeye Springtime Madness App | |
| 1093 | Charlotte Struble | 49.55 | 8 | BB Min | A: 43.59 (+5.96s | 12.0%) | Sea Devils | 07/23/2025 | 2025 MN NSAC 10 U LC State Championship | |
| 1094 | Brigitte Raaberg | 49.55 | 9 | BB Min | A: 43.59 (+5.96s | 12.0%) | Westlake Aquatic Facility | 04/19/2026 | 2026 ST TXLA 10 U Long Course Kick Off | |
| 1095 | Priscilla Qi | 49.56 | 10 | BB Min | A: 43.59 (+5.97s | 12.0%) | Santa Clara Swim Club | 07/20/2024 | Alto Last Splash Invitational | |
| 1096 | Annabelle Liu | 49.56 | 10 | BB Min | A: 43.59 (+5.97s | 12.0%) | Sandpipers of Nevada | 03/30/2025 | Sand Vs BCH LCM Dual 2025 | |
| 1097 | Callie Xu | 49.56 | 10 | BB Min | A: 43.59 (+5.97s | 12.0%) | Spokane Waves Aquatic Team | 04/25/2026 | 2026 SWAT Spring Fling | |
| 1098 | Alexa Rodde | 49.58 | 10 | BB Min | A: 43.59 (+5.99s | 12.1%) | Burlingame Aquatics | 05/02/2026 | Alto Spring Jam CBA | |
| 1099 | Charlie Davis | 49.58 | 10 | BB Min | A: 43.59 (+5.99s | 12.1%) | Alamo Area Aquatic Association | 05/07/2025 | 2025 ST AAAA NS May Race Night | |
| 1100 | Mackinley Mills | 49.58 | 10 | BB Min | A: 43.59 (+5.99s | 12.1%) | South Lake Aquatic Club | 04/25/2026 | 11th Annual Hohne Memorial Invitational | |
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.