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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 5 114 323 1,000+
Free 50 Y 30.80 10 07/25/2026 A AA: 29.89 (+0.91s | 3.0%) 1 39 221 922
Free 100 Y 1:10.40 Analysis 10 03/20/2026 BB A: 1:09.79 (+0.61s | 0.9%) 2 45 238 1,000+
50 Free
33.26
33.26
100 Free
37.14
1:10.40
100 Free
1:10.40
Free 200 Y 2:31.12 Analysis 10 03/20/2026 A AA: 2:25.29 (+5.83s | 3.9%) 2 28 127 618
50 Free
34.11
34.11
100 Free
38.67
1:12.78
100 Free
1:12.78
150 Free
40.50
1:53.28
200 Free
37.84
2:31.12
100 Free
1:18.34
Free 500 Y 6:39.80 Analysis 10 02/07/2026 A AA: 6:26.59 (+13.21s | 3.3%) 2 23 67 455
Back 25 Y 21.44 10 07/19/2025 5 93 305 1,000+
Back 50 Y 41.10 10 04/26/2026 BB A: 37.59 (+3.51s | 8.5%) 3 104 488 1,000+
Back 100 Y 1:23.28 Analysis 10 03/28/2026 BB A: 1:19.59 (+3.69s | 4.4%) 2 51 229 1,000+
50 Back
41.72
41.72
100 Back
41.56
1:23.28
100 Back
1:23.28
Breast 25 Y 25.00 10 07/19/2025 5 142 343 1,000+
Breast 50 Y 48.18 10 01/24/2026 B BB: 47.69 (+0.49s | 1.0%) 6 159 565 1,000+
Breast 100 Y 1:44.35 Analysis 10 12/06/2025 B BB: 1:42.29 (+2.06s | 2.0%) 4 131 538 1,000+
Fly 25 Y 19.79 10 07/19/2025 4 71 172 636
Fly 50 Y 34.15 10 04/09/2026 AA AAA: 32.59 (+1.56s | 4.6%) 1 28 95 313
Fly 100 Y 1:09.47 Analysis 10 07/25/2026 AAAA 1 8 33 205
IM 100 Y 1:16.68 Analysis 10 07/25/2026 A AA: 1:16.39 (+0.29s | 0.4%) 1 28 79 251
IM 200 Y 2:53.69 Analysis 10 03/28/2026 BB A: 2:53.49 (+0.20s | 0.1%) 2 39 157 666
50 Fly
38.96
38.96
100 Back
45.31
1:24.27
100 IM
1:24.27
150 Breast
52.65
2:16.92
200 Free
36.77
2:53.69
100 IM
1:29.42

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%) 1 34 132 330
Free 100 M 1:14.56 Analysis 10 07/17/2026 AA AAA: 1:13.19 (+1.37s | 1.8%) 1 25 85 216
Free 200 M 2:37.06 Analysis 10 07/17/2026 AAA AAAA: 2:31.69 (+5.37s | 3.4%) 1 16 44 108
Free 400 M 5:30.38 Analysis 10 07/30/2026 AAA AAAA: 5:20.79 (+9.59s | 2.9%) 1 16 31 88
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%) 3 82 481 1,000+
Back 100 M 1:34.05 Analysis 10 06/12/2026 BB A: 1:32.29 (+1.76s | 1.9%) 2 46 237 677
Breast 50 M 53.31 10 05/02/2026 BB A: 47.89 (+5.42s | 10.2%) 4 98 503 1,000+
Breast 100 M 1:51.04 Analysis 10 06/12/2026 BB A: 1:45.49 (+5.55s | 5.0%) 4 76 316 756
Fly 50 M 36.11 10 07/30/2026 AAA AAAA: 34.69 (+1.42s | 3.9%) 1 18 61 137
Fly 100 M 1:19.57 Analysis 10 07/17/2026 AAAA 1 11 33 59
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%) 1 19 57 125

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.