USA Boys 10 & under - 50 M Free
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 | |
|---|---|---|---|---|---|---|---|---|---|
| 701 | Brian Isayas | 40.36 | 9 | B Min | BB: 39.79 (+0.57s | 1.4%) | Macedonia Manta Ray Swim Team | 07/24/2025 | 2025 LE Age Group And Senior LC Championships | |
| 702 | Landon Callaway | 40.36 | 10 | B Min | BB: 39.79 (+0.57s | 1.4%) | Aces Swim Club | 07/25/2025 | 2025 CO CSI Age Group Championships | |
| 703 | William Johnson | 40.37 | 8 | B Min | BB: 39.79 (+0.58s | 1.4%) | Swim Florida | 04/11/2025 | 2025 GCST Spring Invite | |
| 704 | Enzo Rodrigues | 40.39 | 8 | B Min | BB: 39.79 (+0.60s | 1.5%) | Longhorn Aquatics | 06/08/2025 | 2025 ST TXLA 14 U Sprint Cup | |
| 705 | Calvin Larkin | 40.40 | 8 | B Min | BB: 39.79 (+0.61s | 1.5%) | Bend Swim Club | 06/20/2025 | Bend Swim Club Sun Country Invite | |
| 706 | Bryce Vowinkle | 40.41 | 10 | B Min | BB: 39.79 (+0.62s | 1.5%) | Highlands Ranch Aquatics | 07/25/2025 | 2025 CO CSI Age Group Championships | |
| 707 | Ludwik Pawelski | 40.42 | 8 | B Min | BB: 39.79 (+0.63s | 1.6%) | Sparks Piranhas Swim Team | 06/20/2025 | Reno Aquatic Club Gamble | |
| 708 | Lincoln Myers | 40.42 | 9 | B Min | BB: 39.79 (+0.63s | 1.6%) | Greater Orlando Aquatics Team | 04/26/2025 | 10th Annual Hohne Memorial Invitational | |
| 709 | Miles Wood | 40.43 | 7 | B Min | BB: 39.79 (+0.64s | 1.6%) | Dart Swimming | 06/21/2024 | Reno Aquatic Club Gamble | |
| 710 | Christopher Williams | 40.43 | 10 | B Min | BB: 39.79 (+0.64s | 1.6%) | Hilltop Aquatic Swim Team | 07/17/2025 | 2025 UTAGS LC Championships | |
| 711 | Daniel Reschke | 40.44 | 9 | B Min | BB: 39.79 (+0.65s | 1.6%) | Alto Swim Club | 06/27/2025 | Alto Summer Swelter | |
| 712 | Drew Manning | 40.44 | 9 | B Min | BB: 39.79 (+0.65s | 1.6%) | Clovis Swim Club | 06/22/2024 | 2024 FDST June A B Modified LC Invitational | |
| 713 | Keller Kirkpatrick | 40.44 | 8 | B Min | BB: 39.79 (+0.65s | 1.6%) | Lake Oswego Swim Club | 07/12/2025 | 2025 OSI Arena Summer LC 10 U Championships | |
| 714 | Daniel Reschke | 40.45 | 9 | B Min | BB: 39.79 (+0.66s | 1.6%) | Alto Swim Club | 04/19/2025 | Alto Spring Jam Meet | |
| 715 | Felician Perski Smaluch | 40.45 | 9 | B Min | BB: 39.79 (+0.66s | 1.6%) | Jupiter Dragons Swim Team | 06/07/2025 | 2025 TCA Aaron Vaughn Memorial | |
| 716 | Benjamin Li | 40.45 | 10 | B Min | BB: 39.79 (+0.66s | 1.6%) | Seattle Metropolitan Aquatic C | 05/02/2025 | 2025 THSC Spring Invitational | |
| 717 | Leo Ioffe | 40.47 | 9 | B Min | BB: 39.79 (+0.68s | 1.7%) | Santa Clara Swim Club | 05/23/2025 | Zone 1 South May Firecracker 500 | |
| 718 | Johnathan Wang | 40.48 | 8 | B Min | BB: 39.79 (+0.69s | 1.7%) | Alto Swim Club | 07/19/2025 | Alto Last Splash | |
| 719 | Jay Dai | 40.48 | 10 | B Min | BB: 39.79 (+0.69s | 1.7%) | Alto Swim Club | 07/19/2025 | Alto Last Splash | |
| 720 | Maddix Loh | 40.48 | 9 | B Min | BB: 39.79 (+0.69s | 1.7%) | Unattached | 06/20/2025 | 2025 Planet Swim Summer Championships | |
| 721 | Calder Brelsford-La Badie | 40.50 | 8 | B Min | BB: 39.79 (+0.71s | 1.8%) | Bainbridge Island Swim Club | 05/02/2025 | 2025 PN BC May Flowers | |
| 722 | Moses Wang | 40.51 | 9 | B Min | BB: 39.79 (+0.72s | 1.8%) | Bainbridge Island Swim Club | 07/11/2025 | 2025 PN OCA July Jamboree Invitational | |
| 723 | Matthew Kosov | 40.51 | 8 | B Min | BB: 39.79 (+0.72s | 1.8%) | Bay Club Aquatics | 07/24/2025 | 2025 SI LC AG CHAMPS | |
| 724 | Jeremiah Dejos | 40.51 | 7 | B Min | BB: 39.79 (+0.72s | 1.8%) | High Performance Aquatic Club | 04/26/2025 | 2025 HPAC Banana Slug Beach Bash | |
| 725 | William Xing | 40.52 | 10 | B Min | BB: 39.79 (+0.73s | 1.8%) | Olympus Aquatics | 06/27/2025 | 2nd Annual Water Dragon Open | |
| 726 | Joseph Morin | 40.53 | 10 | B Min | BB: 39.79 (+0.74s | 1.8%) | Alamo Area Aquatic Association | 07/25/2025 | 2025 ST AAAA NE LC End Of Season Splash | |
| 727 | Forrest Foster | 40.54 | 9 | B Min | BB: 39.79 (+0.75s | 1.9%) | Alamo Area Aquatic Association | 07/25/2025 | 2025 ST AAAA NE LC End Of Season Splash | |
| 728 | Oliver Tornatore | 40.54 | 9 | B Min | BB: 39.79 (+0.75s | 1.9%) | Central Minnesota Aquatics | 07/18/2025 | 2025 MN TUNA Minnesota Regional Championship | |
| 729 | Paul Gunn | 40.55 | 9 | B Min | BB: 39.79 (+0.76s | 1.9%) | Y Wooster Rec Club | 06/27/2025 | 2025 55th FREEDLANDER MEET | |
| 730 | Ahmet Okyay | 40.55 | 9 | B Min | BB: 39.79 (+0.76s | 1.9%) | Alto Swim Club | 04/19/2025 | Alto Spring Jam Meet | |
| 731 | Charles Knigge | 40.56 | 9 | B Min | BB: 39.79 (+0.77s | 1.9%) | Spokane Waves Aquatic Team | 06/06/2025 | 2025 TRI CITY INVITATIONAL | |
| 732 | Emerson Bohan | 40.57 | 10 | B Min | BB: 39.79 (+0.78s | 1.9%) | Tsunamis Swim Team | 01/16/2026 | January Central Park Series | |
| 733 | Liam Schnobrich | 40.58 | 10 | B Min | BB: 39.79 (+0.79s | 1.9%) | St Croix Swim Club | 06/27/2025 | 2025 SD SFST Sanford Invite | |
| 734 | Chezeq Morgos | 40.58 | 9 | B Min | BB: 39.79 (+0.79s | 1.9%) | Sea Dragon Aquatics | 05/03/2025 | 2025 Sea Dragon May Open | |
| 735 | Moss Fano | 40.59 | 9 | B Min | BB: 39.79 (+0.80s | 2.0%) | Team Greenville | 06/12/2025 | Holtrey Summer Classic | |
| 736 | Zachary Brill | 40.60 | 9 | B Min | BB: 39.79 (+0.81s | 2.0%) | Aquatex Swim & Water Polo Team | 05/04/2025 | 2025 ST TXLA 10 U End Of School Splash | |
| 737 | Grant Zimmermann | 40.61 | 8 | B Min | BB: 39.79 (+0.82s | 2.0%) | YMCA of the Triangle Area Swim | 06/14/2024 | SwimRVA Summer Invitational | |
| 738 | Austin Pham | 40.61 | 9 | B Min | BB: 39.79 (+0.82s | 2.0%) | Foothills Swim Team | 04/26/2025 | 2025 CO FST Spring LC Fever | |
| 739 | Liam Benson | 40.62 | 10 | B Min | BB: 39.79 (+0.83s | 2.0%) | Sea Devils | 06/21/2025 | 2025 MN TUNA Oppor TUNA Ty 2 Invite | |
| 740 | Finnegan Halvorson | 40.63 | 9 | B Min | BB: 39.79 (+0.84s | 2.1%) | Foxjets Swim Team | 05/03/2025 | 2025 MN RSC Pentathlon | |
| 741 | Fwj Xiong | 40.64 | 10 | B Min | BB: 39.79 (+0.85s | 2.1%) | South East Metro Sharks | 07/18/2025 | 2025 MN STRM Minnesota Regional Championship | |
| 742 | Anton Todd | 40.64 | 10 | B Min | BB: 39.79 (+0.85s | 2.1%) | Pierre Swim Team | 07/18/2025 | 2025 SD State Long Course Meet | |
| 743 | Haoran Cong | 40.65 | 9 | B Min | BB: 39.79 (+0.86s | 2.1%) | Bellevue Club Swim Team | 05/29/2025 | 2025 IE VS Apple Capital | |
| 744 | Henry Fredericks | 40.68 | 8 | B Min | BB: 39.79 (+0.89s | 2.2%) | COSA Swimming | 06/19/2025 | 2025 CO ACES Summer Invite | |
| 745 | Alan Li | 40.69 | 10 | B Min | BB: 39.79 (+0.90s | 2.2%) | Tualatin Hills Swim Club | 06/06/2025 | 2025 THSC June Invitational | |
| 746 | Dashel Archer | 40.69 | 9 | B Min | BB: 39.79 (+0.90s | 2.2%) | Evergreen Hurricanes | 06/06/2025 | 2025 CO NJ Summer Solstice Invitational | |
| 747 | Erik Hai | 40.70 | 9 | B Min | BB: 39.79 (+0.91s | 2.2%) | The Claremont Club | 07/23/2025 | 2025 CA SCS Summer A G Champs | |
| 748 | Stephan Fesenko | 40.71 | 7 | B Min | BB: 39.79 (+0.92s | 2.3%) | Bolles School Sharks | 06/20/2025 | 2025 Planet Swim Summer Championships | |
| 749 | Aiden Sanchez | 40.72 | 6 | B Min | BB: 39.79 (+0.93s | 2.3%) | Saint Petersburg Aquatics | 06/19/2025 | 2025 Shark Open | |
| 750 | Luca Mansur | 40.74 | 10 | B Min | BB: 39.79 (+0.95s | 2.3%) | Azura Florida Aquatics | 01/17/2026 | 2026 Azura Winter Open LCM Invite | |
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.