COSA Swimming Girls 10 & under 50 Y Back
These rankings show the swimmers' placement within their swim team.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 | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Jane Ackerman | 41.92 | 10 | BB Min | A: 37.99 (+3.93s | 9.4%) | COSA Swimming | 03/14/2026 | 2026 CO Zone 5 Championships | |
| 2 | Caroline Mitchell | 42.32 | 9 | BB Min | A: 37.99 (+4.33s | 10.2%) | COSA Swimming | 12/19/2025 | 2025 CO Falfins Holiday Open | |
| 3 | Adelaide Stephenson | 43.49 | 10 | B Min | BB: 43.29 (+0.20s | 0.5%) | COSA Swimming | 02/13/2026 | 2026 CO Valentine Open | |
| 4 | Evelyn St Onge | 47.40 | 8 | B Min | BB: 43.29 (+4.11s | 8.7%) | COSA Swimming | 04/25/2026 | 2026 CO COSA Spring SC Kick Off | |
| 5 | Kinley Schumm | 48.14 | 10 | B Min | BB: 43.29 (+4.85s | 10.1%) | COSA Swimming | 04/25/2026 | 2026 CO COSA Spring SC Kick Off | |
| 6 | Hailey Stegelmeier | 48.84 | 10 | B: 48.59 (+0.25s | 0.5%) | COSA Swimming | 04/12/2025 | 2025 CO Falfins Summer Series #1 | ||
| 7 | Lillian Ratliff | 51.26 | 9 | B: 48.59 (+2.67s | 5.2%) | COSA Swimming | 03/14/2026 | 2026 CO Zone 5 Championships | ||
| 8 | McKinley Calip | 52.61 | 10 | B: 48.59 (+4.02s | 7.6%) | COSA Swimming | 01/03/2025 | 2025 CO COSA New Year Open | ||
| 9 | Charlotte Burns | 53.46 | 9 | B: 48.59 (+4.87s | 9.1%) | COSA Swimming | 02/13/2026 | 2026 CO Valentine Open | ||
| 10 | Addison Toussaint | 53.69 | 10 | B: 48.59 (+5.10s | 9.5%) | COSA Swimming | 02/13/2026 | 2026 CO Valentine Open | ||
| 11 | Brielle Hellu | 54.24 | 10 | B: 48.59 (+5.65s | 10.4%) | COSA Swimming | 03/14/2026 | 2026 CO Zone 5 Championships | ||
| 12 | Ada Bridges | 55.08 | 9 | B: 48.59 (+6.49s | 11.8%) | COSA Swimming | 02/13/2026 | 2026 CO Valentine Open | ||
| 13 | Evelyn Backus | 55.76 | 10 | B: 48.59 (+7.17s | 12.9%) | COSA Swimming | 04/25/2026 | 2026 CO COSA Spring SC Kick Off | ||
| 14 | Lacey Jamieson | 57.33 | 9 | B: 48.59 (+8.74s | 15.2%) | COSA Swimming | 02/13/2026 | 2026 CO Valentine Open | ||
| 15 | Payton Mann | 58.21 | 10 | B: 48.59 (+9.62s | 16.5%) | Unattached | 02/14/2025 | 2025 CO COSA Valentine Open | ||
| 16 | Harper Dionisio | 58.29 | 8 | B: 48.59 (+9.70s | 16.6%) | COSA Swimming | 04/25/2026 | 2026 CO COSA Spring SC Kick Off | ||
| 17 | Alexandra Mitchell | 1:00.51 | 6 | B: 48.59 (+11.92s | 19.7%) | COSA Swimming | 12/19/2025 | 2025 CO Falfins Holiday Open | ||
| 18 | Quincy Hellu | 1:01.07 | 8 | B: 48.59 (+12.48s | 20.4%) | COSA Swimming | 03/14/2026 | 2026 CO Zone 5 Championships | ||
| 19 | Riley Weinstein | 1:05.80 | 7 | B: 48.59 (+17.21s | 26.2%) | COSA Swimming | 12/19/2025 | 2025 CO Falfins Holiday Open | ||
| 20 | Ruby Fredericks | 1:10.40 | 6 | B: 48.59 (+21.81s | 31.0%) | COSA Swimming | 01/02/2026 | 2026 CO COSA New Year Open | ||
| 21 | Meribel Mozee | 1:13.17 | 10 | B: 48.59 (+24.58s | 33.6%) | COSA Swimming | 02/14/2025 | 2025 CO COSA Valentine Open | ||
| 22 | Adelyn Schumacher | 1:17.29 | 7 | B: 48.59 (+28.70s | 37.1%) | COSA Swimming | 03/14/2026 | 2026 CO Zone 5 Championships | ||
| 23 | Sierra Boyd | 1:24.48 | 6 | B: 48.59 (+35.89s | 42.5%) | COSA Swimming | 12/19/2025 | 2025 CO Falfins Holiday Open | ||
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.