USA Boys 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 | |
|---|---|---|---|---|---|---|---|---|---|
| 1101 | Paxton Padilla | 52.34 | 8 | B Min | BB: 49.29 (+3.05s | 5.8%) | Pueblo County Swim Team | 07/18/2025 | 2025 CO Rocky Ford Blue Marlins Invitational | |
| 1102 | Lawson Tenfjord | 52.35 | 9 | B Min | BB: 49.29 (+3.06s | 5.8%) | Highlands Ranch Aquatics | 06/19/2025 | 2025 CO ACES Summer Invite | |
| 1103 | Olyn Nelson | 52.36 | 9 | B Min | BB: 49.29 (+3.07s | 5.9%) | Los Altos Mountain View Aquati | 05/17/2025 | 2025 LAMV SCM C B A+ | |
| 1104 | Muyang He | 52.36 | 7 | B Min | BB: 49.29 (+3.07s | 5.9%) | Santa Clara Swim Club | 05/17/2024 | Quicksilver Swimming Zone 1S LCM C B A+ Meet | |
| 1105 | Luke Slowik | 52.37 | 9 | B Min | BB: 49.29 (+3.08s | 5.9%) | Westlake Aquatic Facility | 04/05/2025 | 2025 ST TXLA 10 U Long Course Kick Off | |
| 1106 | Barrett Jenkins | 52.37 | 9 | B Min | BB: 49.29 (+3.08s | 5.9%) | Mercy HealthPlex Sea Wolves | 08/06/2025 | 2025 Summer Elite Showcase | |
| 1107 | Tommy Yount | 52.38 | 10 | B Min | BB: 49.29 (+3.09s | 5.9%) | Burlingame Aquatics | 06/06/2025 | BAC C B A Meet | |
| 1108 | Lucas Umaniuc | 52.41 | 8 | B Min | BB: 49.29 (+3.12s | 6.0%) | Walnut Creek Aquabears | 06/20/2025 | Zone 2 Last Chance To AG Champs | |
| 1109 | Norne Fang | 52.41 | 7 | B Min | BB: 49.29 (+3.12s | 6.0%) | Milpitas Aquatic Club | 07/19/2025 | Alto Last Splash | |
| 1110 | Amir Toleubek | 52.43 | 8 | B Min | BB: 49.29 (+3.14s | 6.0%) | Alto Swim Club | 06/07/2024 | DACA LC C B A+ Meet | |
| 1111 | Johnathan Rudd | 52.45 | 9 | B Min | BB: 49.29 (+3.16s | 6.0%) | Jupiter Dragons Swim Team | 06/07/2025 | 2025 TCA Aaron Vaughn Memorial | |
| 1112 | Watson She | 52.45 | 9 | B Min | BB: 49.29 (+3.16s | 6.0%) | Bellevue Club Swim Team | 07/18/2025 | 2025 PN Chinook Age Group Seattle Open | |
| 1113 | Elijah Spencer | 52.46 | 7 | B Min | BB: 49.29 (+3.17s | 6.0%) | Life Time Minnesota Swim Team | 07/23/2025 | 2025 MN NSAC 10 U LC State Championship | |
| 1114 | Mark Badziong | 52.46 | 7 | B Min | BB: 49.29 (+3.17s | 6.0%) | Hudson Explorer Aquatic | 07/24/2025 | 2025 LE Age Group And Senior LC Championships | |
| 1115 | Marcus England | 52.49 | 9 | B Min | BB: 49.29 (+3.20s | 6.1%) | Sawtooth Aquatic Club | 05/16/2025 | 2025 Spring Fling LC Invitational | |
| 1116 | Reid Siemens | 52.49 | 8 | B Min | BB: 49.29 (+3.20s | 6.1%) | Hurricanes Swim Team | 07/23/2025 | 2025 MN NSAC 10 U LC State Championship | |
| 1117 | Killian Mann | 52.50 | 8 | B Min | BB: 49.29 (+3.21s | 6.1%) | Olympic Cascade Aquatics | 05/31/2025 | 2025 PN VAST Summer Sprints And Distance Chal | |
| 1118 | Amir Turgunov | 52.51 | 8 | B Min | BB: 49.29 (+3.22s | 6.1%) | Patriot Aquatics | 05/16/2025 | 2025 PA Long Course Invite | |
| 1119 | Clyde Hanna | 52.54 | 9 | B Min | BB: 49.29 (+3.25s | 6.2%) | Lake Oswego Swim Club | 05/02/2025 | 2025 THSC Spring Invitational | |
| 1120 | Jackson Jensen | 52.55 | 8 | B Min | BB: 49.29 (+3.26s | 6.2%) | Valley Aquatics | 05/31/2025 | 2025 PN VAST Summer Sprints And Distance Chal | |
| 1121 | Benjamin Verhoef | 52.55 | 8 | B Min | BB: 49.29 (+3.26s | 6.2%) | Bolles School Sharks | 04/11/2025 | 2025 April Classic | |
| 1122 | Elliott Baranack | 52.55 | 10 | B Min | BB: 49.29 (+3.26s | 6.2%) | Firestone Akron Swim Team | 06/12/2025 | Holtrey Summer Classic | |
| 1123 | Luca Mansur | 52.57 | 10 | B Min | BB: 49.29 (+3.28s | 6.2%) | Azura Florida Aquatics | 01/17/2026 | 2026 Azura Winter Open LCM Invite | |
| 1124 | Luke Lim | 52.57 | 9 | B Min | BB: 49.29 (+3.28s | 6.2%) | Alto Swim Club | 04/19/2025 | Alto Spring Jam Meet | |
| 1125 | Harry Zang | 52.59 | 10 | B Min | BB: 49.29 (+3.30s | 6.3%) | Otter Swim Club | 04/19/2025 | Alto Spring Jam Meet | |
| 1126 | Easton Fairbank | 52.60 | 7 | B Min | BB: 49.29 (+3.31s | 6.3%) | Front Range Barracudas | 05/30/2025 | 2025 CO Barracuda Summer Sizzler Invite | |
| 1127 | Chen Lin | 52.62 | 8 | B Min | BB: 49.29 (+3.33s | 6.3%) | Gator Swim Club | 05/16/2025 | 2025 FAST May Invite | |
| 1128 | Dax Nisenbaum | 52.62 | 9 | B Min | BB: 49.29 (+3.33s | 6.3%) | Hills Hurricane Swimming | 06/07/2025 | Orinda Aquatics LC C B BB+ Meet | |
| 1129 | Ian Webster | 52.63 | 9 | B Min | BB: 49.29 (+3.34s | 6.3%) | Columbia River Swim Team | 06/07/2025 | 2025 OR CRST Summer Blast 2 | |
| 1130 | Colt Rodeheaver | 52.63 | 8 | B Min | BB: 49.29 (+3.34s | 6.3%) | Seattle Metropolitan Aquatic C | 05/29/2025 | 2025 IE VS Apple Capital | |
| 1131 | Landon Jakubiak | 52.63 | 10 | B Min | BB: 49.29 (+3.34s | 6.3%) | Laker Swim | 05/16/2025 | 2025 FAST May Invite | |
| 1132 | Callum Gillilan | 52.63 | 9 | B Min | BB: 49.29 (+3.34s | 6.3%) | Fort Collins Area Swim Team | 04/25/2025 | 2025 CO FAST Spring Splash LC Open | |
| 1133 | Arz Abu Raya | 52.64 | 7 | B Min | BB: 49.29 (+3.35s | 6.4%) | Unattached | 05/16/2025 | 2025 DACA LC CBA Meet | |
| 1134 | Liam Larson | 52.67 | 8 | B Min | BB: 49.29 (+3.38s | 6.4%) | Pacific Swim | 04/25/2025 | 2025 SI Pacific Swim A BB LCM Group A | |
| 1135 | Ely Marsh | 52.67 | 9 | B Min | BB: 49.29 (+3.38s | 6.4%) | Sarasota Tsunami Swim Team | 04/11/2025 | 2025 GCST Spring Invite | |
| 1136 | Jackson Guttridge | 52.67 | 10 | B Min | BB: 49.29 (+3.38s | 6.4%) | Apex | 07/19/2025 | Apex Intrasquad 3 | |
| 1137 | Jacob Bouchard | 52.68 | 8 | B Min | BB: 49.29 (+3.39s | 6.4%) | Nova of Virginia | 04/26/2024 | NOVA LC Kick Off | |
| 1138 | Tyler Ashby | 52.68 | 7 | B Min | BB: 49.29 (+3.39s | 6.4%) | Hanover Aquatics | 06/22/2024 | 2024 WAC Summer Sizzle Meet | |
| 1139 | Noah Earney | 52.68 | 8 | B Min | BB: 49.29 (+3.39s | 6.4%) | Hanover Aquatics | 06/22/2024 | 2024 WAC Summer Sizzle Meet | |
| 1140 | Yunhan Song | 52.69 | 8 | B Min | BB: 49.29 (+3.40s | 6.5%) | Eastside Aquatic Swim Team | 04/25/2025 | 2025 PN KING Spring Derby | |
| 1141 | Cooper Horne | 52.69 | 9 | B Min | BB: 49.29 (+3.40s | 6.5%) | Racer X Aquatics | 06/12/2025 | Holtrey Summer Classic | |
| 1142 | Adam Ma | 52.69 | 9 | B Min | BB: 49.29 (+3.40s | 6.5%) | California Dolphins Swim Team | 06/07/2025 | 2025 06 07 CDST LC C B BB+ Meet | |
| 1143 | Santiago Pena | 52.69 | 8 | B Min | BB: 49.29 (+3.40s | 6.5%) | Harlingen Cisd Seal Team | 05/02/2025 | 2025 ST 22nd Annual Cinco De Mayo | |
| 1144 | Declan Reilly | 52.69 | 10 | B Min | BB: 49.29 (+3.40s | 6.5%) | Front Range Barracudas | 05/30/2025 | 2025 CO Barracuda Summer Sizzler Invite | |
| 1145 | Jasper Timmons | 52.71 | 10 | B Min | BB: 49.29 (+3.42s | 6.5%) | Cascade Swim Club | 09/20/2025 | 2025 PN CSC September Shakeout | |
| 1146 | Benjamin Leger | 52.71 | 7 | B Min | BB: 49.29 (+3.42s | 6.5%) | Lynchburg YMCA Swim Team | 07/06/2023 | 2023 CCA Summer Awards | |
| 1147 | Mason Liu | 52.72 | 9 | B Min | BB: 49.29 (+3.43s | 6.5%) | Trident Aquatic Club | 08/06/2025 | 2025 Summer Elite Showcase | |
| 1148 | Austin Dunn | 52.72 | 9 | B Min | BB: 49.29 (+3.43s | 6.5%) | Streamliner Aquatics | 07/18/2025 | 2025 LCM Summer Championships | |
| 1149 | Zhengran Shao | 52.72 | 9 | B Min | BB: 49.29 (+3.43s | 6.5%) | Bolles School Sharks | 06/20/2025 | 2025 Planet Swim Summer Championships | |
| 1150 | Truman Hunt | 52.74 | 9 | B Min | BB: 49.29 (+3.45s | 6.5%) | Gator Swim Club | 06/06/2025 | 2025 MAKOS Summer Splash | |
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.