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Jonathan KO

Age: 13 years old
Age Category: 13-14
Team: Southern California Swimming | Southern California Swimming

Personal Best

Short course distance

Event Time Age Date Standard Next Standard Southern California Swimming Southern California Swimming Western Zone USA
Free 50 Y 24.99 12 10/31/2025 A AA: 24.59 (+0.40s | 1.6%) 5 129 591 1,000+
Free 100 Y 53.77 12 01/03/2026 A AA: 53.39 (+0.38s | 0.7%) 5 116 435 1,000+
50 Free
26.15
26.15
100 Free
27.62
53.77
100 Free
53.77
Free 200 Y 2:01.77 12 12/12/2025 A AA: 1:57.09 (+4.68s | 3.8%) 4 147 652 1,000+
50 Free
26.74
26.74
100 Free
31.55
58.29
100 Free
58.29
150 Free
32.54
1:30.83
200 Free
30.94
2:01.77
100 Free
1:03.48
Breast 50 Y 30.23 12 12/12/2025 3 39 135 359
Breast 100 Y 1:05.33 12 10/31/2025 AA AAA: 1:03.29 (+2.04s | 3.1%) 3 47 174 518
50 Breast
30.52
30.52
100 Breast
34.81
1:05.33
100 Breast
1:05.33
Breast 200 Y 2:21.56 12 10/31/2025 AA AAA: 2:17.39 (+4.17s | 2.9%) 3 35 125 365
50 Breast
32.15
32.15
100 Breast
36.80
1:08.95
100 Breast
1:08.95
150 Breast
37.54
1:46.49
200 Breast
35.07
2:21.56
100 Breast
1:12.61
Fly 50 Y 26.74 12 01/03/2026 3 53 242 746
Fly 100 Y 1:19.25 10 12/08/2023 B: 1:10.49 (+8.76s | 11.1%) 5 265 1,000+ 1,000+
50 Fly
36.05
36.05
100 Fly
43.20
1:19.25
100 Fly
1:19.25
IM 200 Y 2:11.11 12 10/31/2025 A AA: 2:09.79 (+1.32s | 1.0%) 4 76 291 956
50 Fly
28.64
28.64
100 Back
35.75
1:04.39
100 IM
1:04.39
150 Breast
37.79
1:42.18
200 Free
28.93
2:11.11
100 IM
1:06.72
IM 400 Y 5:12.88 11 03/22/2024 BB A: 4:49.49 (+23.39s | 7.5%) 2 142 693 1,000+
50 Fly
34.96
34.96
100 Fly
41.14
1:16.10
100 Fly
1:16.10
150 Back
41.04
1:57.14
200 Back
39.17
2:36.31
100 Back
1:20.21
250 Breast
43.41
3:19.72
300 Breast
40.79
4:00.51
100 Breast
1:24.20
350 Free
37.39
4:37.90
400 Free
34.98
5:12.88
100 Free
1:12.37

Long course distance

Event Time Age Date Standard Next Standard Southern California Swimming Southern California Swimming Western Zone USA
Free 50 M 29.33 12 06/12/2025 A AA: 28.19 (+1.14s | 3.9%) 5 141 521 1,000+
Free 100 M 1:04.62 12 05/23/2025 BB A: 1:04.39 (+0.23s | 0.4%) 5 132 499 1,000+
50 Free
31.20
31.20
100 Free
33.42
1:04.62
100 Free
1:04.62
Free 200 M 2:18.64 12 06/12/2025 A AA: 2:14.69 (+3.95s | 2.8%) 4 96 302 660
50 Free
31.74
31.74
100 Free
35.94
1:07.68
100 Free
1:07.68
150 Free
36.79
1:44.47
200 Free
34.17
2:18.64
100 Free
1:10.96
Free 400 M 5:17.99 11 06/13/2024 BB A: 4:58.69 (+19.30s | 6.1%) 4 169 598 1,000+
50 Free
35.77
35.77
100 Free
40.30
1:16.07
100 Free
1:16.07
150 Free
40.44
1:56.52
200 Free
40.91
2:37.43
100 Free
1:21.35
250 Free
42.01
3:19.44
300 Free
40.58
4:00.02
100 Free
1:22.59
350 Free
41.28
4:41.30
400 Free
36.69
5:17.99
100 Free
1:17.97
Back 50 M 43.41 10 07/20/2023 6 274 1,000+ 1,000+
Breast 50 M 34.95 12 06/12/2025 1 14 61 129
Breast 100 M 1:14.17 12 06/12/2025 AA AAA: 1:13.69 (+0.48s | 0.6%) 2 21 59 112
50 Breast
35.33
35.33
100 Breast
38.84
1:14.17
100 Breast
1:14.17
Breast 200 M 2:37.52 12 06/12/2025 AAA AAAA: 2:32.09 (+5.43s | 3.4%) 2 13 29 55
50 Breast
37.46
37.46
100 Breast
40.96
1:18.42
100 Breast
1:18.42
150 Breast
39.99
1:58.41
200 Breast
39.11
2:37.52
100 Breast
1:19.10
Fly 50 M 31.79 12 06/12/2025 4 57 225 482
IM 200 M 2:31.23 12 06/12/2025 A AA: 2:30.19 (+1.04s | 0.7%) 5 57 179 340
50 Fly
32.39
32.39
100 Back
41.05
1:13.44
100 IM
1:13.44
150 Breast
42.16
1:55.60
200 Free
35.63
2:31.23
100 IM
1:17.79

Above are the fastest times that Jonathan KO has achieved in his swimming career. For each event, you can find Jonathan's best time, the corresponding time standard, as well as how much faster Jonathan needs to be to reach the next level. The last columns provide Jonathan rankings at the team and LSC levels. These rankings are based on the Jonathan'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.