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Joon Cha

Age: 10 years old
Age Category: 10 & under
Team: Sunnyvale Swim Club | Pacific Swimming

Personal Best

Short course distance

Event Time Age Date Standard Next Standard Sunnyvale Swim Club Pacific Swimming Western Zone USA
Free 25 Y 17.62 10 07/19/2025 Rankings Rankings Rankings Rankings
Free 50 Y 29.69 10 10/24/2026 AA AAA: 28.69 (+1.00s | 3.4%) Rankings Rankings Rankings Rankings
Free 100 Y 1:05.56 Analysis 10 10/03/2026 AA AAA: 1:03.79 (+1.77s | 2.7%) Rankings Rankings Rankings Rankings
Free 200 Y 2:15.13 Analysis 10 10/24/2026 AAA AAAA: 2:12.69 (+2.44s | 1.8%) Rankings Rankings Rankings Rankings
Free 500 Y 6:11.72 Analysis 10 10/03/2026 AA AAA: 6:09.79 (+1.93s | 0.5%) Rankings Rankings Rankings Rankings
Back 25 Y 21.44 10 07/19/2025 Rankings Rankings Rankings Rankings
Back 50 Y 36.21 10 10/24/2026 A AA: 35.79 (+0.42s | 1.2%) Rankings Rankings Rankings Rankings
Back 100 Y 1:13.81 Analysis 10 09/18/2026 AA AAA: 1:12.49 (+1.32s | 1.8%) Rankings Rankings Rankings Rankings
50 Back
36.25
36.25
100 Back
37.56
1:13.81
100 Back
1:13.81
Breast 25 Y 25.00 10 07/19/2025 Rankings Rankings Rankings Rankings
Breast 50 Y 42.12 10 09/18/2026 BB A: 42.09 (+0.03s | 0.1%) Rankings Rankings Rankings Rankings
Breast 100 Y 1:28.61 Analysis 10 10/03/2026 A AA: 1:26.59 (+2.02s | 2.3%) Rankings Rankings Rankings Rankings
Fly 25 Y 19.79 10 07/19/2025 Rankings Rankings Rankings Rankings
Fly 50 Y 30.94 10 10/24/2026 AAA AAAA: 30.79 (+0.15s | 0.5%) Rankings Rankings Rankings Rankings
Fly 100 Y 1:08.46 Analysis 10 10/24/2026 AAAA Rankings Rankings Rankings Rankings
IM 100 Y 1:15.03 Analysis 10 09/27/2026 AA AAA: 1:13.09 (+1.94s | 2.6%) Rankings Rankings Rankings Rankings
IM 200 Y 2:36.32 Analysis 10 09/18/2026 AAA AAAA: 2:30.89 (+5.43s | 3.5%) Rankings Rankings Rankings Rankings
50 Fly
33.60
33.60
100 Back
38.99
1:12.59
100 IM
1:12.59
150 Breast
48.32
2:00.91
200 Free
35.41
2:36.32
100 IM
1:23.73

Long course distance

Event Time Age Date Standard Next Standard Sunnyvale Swim Club Pacific Swimming Western Zone USA
Free 50 M 34.33 10 07/30/2026 AA AAA: 32.99 (+1.34s | 3.9%) Rankings Rankings Rankings Rankings
Free 100 M 1:14.56 Analysis 10 07/17/2026 AA AAA: 1:13.19 (+1.37s | 1.8%) Rankings Rankings Rankings Rankings
Free 200 M 2:37.06 Analysis 10 07/17/2026 AAA AAAA: 2:31.69 (+5.37s | 3.4%) Rankings Rankings Rankings Rankings
Free 400 M 5:30.38 Analysis 10 07/30/2026 AAA AAAA: 5:20.79 (+9.59s | 2.9%) Rankings Rankings Rankings Rankings
50 Free
37.50
37.50
100 Free
40.48
1:17.98
100 Free
1:17.98
150 Free
42.42
2:00.40
200 Free
42.04
2:42.44
100 Free
1:24.46
250 Free
43.02
3:25.46
300 Free
41.52
4:06.98
100 Free
1:24.54
350 Free
43.34
4:50.32
400 Free
40.06
5:30.38
100 Free
1:23.40
Back 50 M 46.31 10 06/12/2026 BB A: 43.09 (+3.22s | 7.0%) Rankings Rankings Rankings Rankings
Back 100 M 1:34.05 Analysis 10 06/12/2026 BB A: 1:32.29 (+1.76s | 1.9%) Rankings Rankings Rankings Rankings
Breast 50 M 53.31 10 05/02/2026 BB A: 47.89 (+5.42s | 10.2%) Rankings Rankings Rankings Rankings
Breast 100 M 1:51.04 Analysis 10 06/12/2026 BB A: 1:45.49 (+5.55s | 5.0%) Rankings Rankings Rankings Rankings
Fly 50 M 36.11 10 07/30/2026 AAA AAAA: 34.69 (+1.42s | 3.9%) Rankings Rankings Rankings Rankings
Fly 100 M 1:19.57 Analysis 10 07/17/2026 AAAA Rankings Rankings Rankings Rankings
50 Fly
36.32
36.32
100 Fly
43.25
1:19.57
100 Fly
1:19.57
IM 200 M 2:58.73 Analysis 10 07/30/2026 AAA AAAA: 2:52.19 (+6.54s | 3.7%) Rankings Rankings Rankings Rankings

Above are the fastest times that Joon Cha has achieved in his swimming career. For each event, you can find Joon's best time, the corresponding time standard, as well as how much faster Joon needs to be to reach the next level. The last columns provide Joon rankings at the team and LSC levels. These rankings are based on the Joon's personal best, his current age category, and team; and are calculated from all the meets results.

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.