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Kaisei Ishikubo

Age: 15 years old
Age Category: 15-16
Team: DeAnza Cupertino Aquatics | Pacific Swimming

Personal Best

Short course distance

Event Time Age Date Standard Next Standard DeAnza Cupertino Aquatics Pacific Swimming Western Zone USA
Free 50 Y 26.06 15 02/13/2026 BB A: 24.19 (+1.87s | 7.2%) 17 498 1,000+ 1,000+
Free 100 Y 57.33 15 01/24/2026 BB A: 53.19 (+4.14s | 7.2%) 17 495 1,000+ 1,000+
50 Free
28.12
28.12
100 Free
29.21
57.33
100 Free
57.33
Free 200 Y 2:05.03 15 02/13/2026 BB A: 1:56.59 (+8.44s | 6.8%) 13 384 1,000+ 1,000+
50 Free
27.82
27.82
100 Free
31.71
59.53
100 Free
59.53
150 Free
33.01
1:32.54
200 Free
32.49
2:05.03
100 Free
1:05.50
Free 500 Y 5:55.71 14 05/11/2025 B BB: 5:42.09 (+13.62s | 3.8%) 9 349 1,000+ 1,000+
50 Free
30.65
30.65
100 Free
34.56
1:05.21
100 Free
1:05.21
150 Free
35.47
1:40.68
200 Free
36.20
2:16.88
100 Free
1:11.67
250 Free
35.54
2:52.42
300 Free
37.08
3:29.50
100 Free
1:12.62
350 Free
37.58
4:07.08
400 Free
37.57
4:44.65
100 Free
1:15.15
450 Free
36.60
5:21.25
500 Free
34.46
5:55.71
100 Free
1:11.06
Back 50 Y 32.31 15 02/13/2026 12 285 1,000+ 1,000+
Back 100 Y 1:11.53 15 10/25/2025 B: 1:07.49 (+4.04s | 5.6%) 19 491 1,000+ 1,000+
Back 200 Y 2:35.11 14 01/18/2025 B: 2:27.59 (+7.52s | 4.8%) 10 333 1,000+ 1,000+
50 Back
37.09
37.09
100 Back
38.89
1:15.98
100 Back
1:15.98
150 Back
39.86
1:55.84
200 Back
39.27
2:35.11
100 Back
1:19.13
Breast 50 Y 33.00 15 02/13/2026 7 161 697 1,000+
Breast 100 Y 1:08.69 14 07/19/2025 BB A: 1:05.89 (+2.80s | 4.1%) 8 232 891 1,000+
Breast 200 Y 2:28.72 15 02/13/2026 BB A: 2:23.19 (+5.53s | 3.7%) 6 166 634 1,000+
50 Breast
34.34
34.34
100 Breast
38.15
1:12.49
100 Breast
1:12.49
150 Breast
37.56
1:50.05
200 Breast
38.67
2:28.72
100 Breast
1:16.23
Fly 50 Y 31.85 15 02/13/2026 13 384 1,000+ 1,000+
Fly 100 Y 1:10.07 15 01/24/2026 B: 1:07.19 (+2.88s | 4.1%) 12 480 1,000+ 1,000+
50 Fly
32.61
32.61
100 Fly
37.46
1:10.07
100 Fly
1:10.07
IM 200 Y 2:21.50 15 11/15/2025 B BB: 2:20.19 (+1.31s | 0.9%) 12 378 1,000+ 1,000+
IM 400 Y 5:11.78 14 01/18/2025 B BB: 4:59.19 (+12.59s | 4.0%) 6 248 1,000+ 1,000+
50 Fly
34.15
34.15
100 Fly
39.63
1:13.78
100 Fly
1:13.78
150 Back
40.91
1:54.69
200 Back
43.49
2:38.18
100 Back
1:24.40
250 Breast
40.60
3:18.78
300 Breast
42.31
4:01.09
100 Breast
1:22.91
350 Free
36.78
4:37.87
400 Free
33.91
5:11.78
100 Free
1:10.69

Long course distance

Event Time Age Date Standard Next Standard DeAnza Cupertino Aquatics Pacific Swimming Western Zone USA
Free 50 M 29.12 14 06/27/2025 BB A: 28.19 (+0.93s | 3.2%) 9 313 1,000+ 1,000+
Free 100 M 1:04.22 14 06/06/2025 BB A: 1:01.49 (+2.73s | 4.3%) 9 309 1,000+ 1,000+
Free 200 M 2:21.00 14 06/27/2025 BB A: 2:14.29 (+6.71s | 4.8%) 6 254 1,000+ 1,000+
Free 800 M 10:30.87 14 06/27/2025 BB A: 9:54.79 (+36.08s | 5.7%) 1 99 440 941
Back 100 M 1:25.82 14 06/21/2025 B: 1:19.39 (+6.43s | 7.5%) 11 382 1,000+ 1,000+
50 Back
42.84
42.84
100 Back
42.98
1:25.82
100 Back
1:25.82
Back 200 M 2:52.97 14 06/21/2025 B: 2:52.29 (+0.68s | 0.4%) 6 208 928 1,000+
50 Back
41.38
41.38
100 Back
44.11
1:25.49
100 Back
1:25.49
150 Back
45.12
2:10.61
200 Back
42.36
2:52.97
100 Back
1:27.48
Breast 50 M 34.77 14 06/06/2025 1 35 157 432
Breast 100 M 1:16.91 14 07/11/2025 BB A: 1:16.69 (+0.22s | 0.3%) 2 104 394 884
Breast 200 M 2:47.24 14 07/11/2025 BB A: 2:46.69 (+0.55s | 0.3%) 2 87 318 691
IM 200 M 2:39.04 14 06/21/2025 BB A: 2:30.99 (+8.05s | 5.1%) 6 218 878 1,000+
50 Fly
36.53
36.53
100 Back
43.92
1:20.45
100 IM
1:20.45
150 Breast
44.94
2:05.39
200 Free
33.65
2:39.04
100 IM
1:18.59

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