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Hayden Karasiewicz

Age: 12 years old
Age Category: 11-12
Team: Bayside Aquatics | Maryland Swimming

Personal Best

Short course distance

Event Time Age Date Standard Next Standard Bayside Aquatics Maryland Swimming Eastern Zone USA
Free 50 Y 26.79 12 03/05/2026 AAA AAAA: 25.79 (+1.00s | 3.7%) 2 11 94 599
Free 100 Y 59.81 Analysis 12 12/11/2025 AA AAA: 58.69 (+1.12s | 1.9%) 2 24 196 835
50 Free
29.19
29.19
100 Free
30.62
59.81
100 Free
59.81
Free 200 Y 2:10.55 Analysis 12 02/06/2026 AA AAA: 2:07.69 (+2.86s | 2.2%) 1 18 160 631
50 Free
30.64
30.64
100 Free
33.89
1:04.53
100 Free
1:04.53
150 Free
33.20
1:37.73
200 Free
32.82
2:10.55
100 Free
1:06.02
Free 500 Y 5:59.02 Analysis 12 01/23/2026 A AA: 5:58.89 (+0.13s | 0.0%) 1 19 212 872
50 Free
30.44
30.44
100 Free
35.20
1:05.64
100 Free
1:05.64
150 Free
36.19
1:41.83
200 Free
36.99
2:18.82
100 Free
1:13.18
250 Free
37.78
2:56.60
300 Free
37.52
3:34.12
100 Free
1:15.30
350 Free
37.65
4:11.77
400 Free
37.46
4:49.23
100 Free
1:15.11
450 Free
36.24
5:25.47
500 Free
33.55
5:59.02
100 Free
1:09.79
Free 1000 Y 12:38.88 Analysis 12 12/20/2025 A AA: 12:21.49 (+17.39s | 2.3%) 1 6 75 271
Free 1650 Y 20:50.72 Analysis 12 12/20/2025 A AA: 20:38.19 (+12.53s | 1.0%) 1 5 32 169
50 Free
32.35
32.35
100 Free
37.33
1:09.68
100 Free
1:09.68
150 Free
37.48
1:47.16
200 Free
37.93
2:25.09
100 Free
1:15.41
250 Free
38.25
3:03.34
300 Free
38.12
3:41.46
100 Free
1:16.37
350 Free
38.19
4:19.65
400 Free
38.27
4:57.92
100 Free
1:16.46
450 Free
38.43
5:36.35
500 Free
38.38
6:14.73
100 Free
1:16.81
550 Free
38.32
6:53.05
600 Free
38.44
7:31.49
100 Free
1:16.76
650 Free
38.67
8:10.16
700 Free
38.10
8:48.26
100 Free
1:16.77
750 Free
38.43
9:26.69
800 Free
38.91
10:05.60
100 Free
1:17.34
850 Free
37.74
10:43.34
900 Free
38.39
11:21.73
100 Free
1:16.13
950 Free
38.81
12:00.54
1000 Free
38.34
12:38.88
100 Free
1:17.15
1050 Free
38.72
13:17.60
1100 Free
38.21
13:55.81
100 Free
1:16.93
1150 Free
38.52
14:34.33
1200 Free
38.50
15:12.83
100 Free
1:17.02
1250 Free
38.65
15:51.48
1300 Free
38.26
16:29.74
100 Free
1:16.91
1350 Free
38.63
17:08.37
1400 Free
38.02
17:46.39
100 Free
1:16.65
1450 Free
38.32
18:24.71
1500 Free
37.86
19:02.57
100 Free
1:16.18
1550 Free
37.95
19:40.52
1600 Free
36.71
20:17.23
100 Free
1:14.66
1650 Free
33.49
20:50.72
Back 50 Y 31.78 12 12/11/2025 AA AAA: 30.49 (+1.29s | 4.1%) 3 28 207 809
Back 100 Y 1:05.57 Analysis 12 03/05/2026 AAA AAAA: 1:02.69 (+2.88s | 4.4%) 2 13 83 370
50 Back
32.54
32.54
100 Back
33.03
1:05.57
100 Back
1:05.57
Back 200 Y 2:29.05 Analysis 12 12/11/2025 A AA: 2:27.49 (+1.56s | 1.0%) 2 30 188 525
50 Back
35.44
35.44
100 Back
38.21
1:13.65
100 Back
1:13.65
150 Back
38.28
1:51.93
200 Back
37.12
2:29.05
100 Back
1:15.40
Breast 50 Y 37.25 12 02/06/2026 A AA: 36.19 (+1.06s | 2.8%) 2 37 338 1,000+
Breast 100 Y 1:19.19 Analysis 12 01/23/2026 A AA: 1:18.59 (+0.60s | 0.8%) 2 20 219 878
50 Breast
38.14
38.14
100 Breast
41.05
1:19.19
100 Breast
1:19.19
Breast 200 Y 2:49.70 Analysis 12 02/06/2026 A AA: 2:48.99 (+0.71s | 0.4%) 2 17 162 462
50 Breast
38.47
38.47
100 Breast
42.94
1:21.41
100 Breast
1:21.41
150 Breast
43.71
2:05.12
200 Breast
44.58
2:49.70
100 Breast
1:28.29
Fly 50 Y 28.86 12 03/05/2026 AAA AAAA: 27.69 (+1.17s | 4.1%) 2 8 55 219
Fly 100 Y 1:03.22 Analysis 12 03/05/2026 AAA AAAA: 1:01.79 (+1.43s | 2.3%) 1 4 34 200
50 Fly
30.31
30.31
100 Fly
32.91
1:03.22
100 Fly
1:03.22
Fly 200 Y 2:28.99 Analysis 12 03/05/2026 AA AAA: 2:24.09 (+4.90s | 3.3%) 1 6 57 174
50 Fly
31.78
31.78
100 Fly
37.38
1:09.16
100 Fly
1:09.16
150 Fly
39.84
1:49.00
200 Fly
39.99
2:28.99
100 Fly
1:19.83
IM 100 Y 1:07.89 Analysis 12 11/14/2025 AA AAA: 1:06.99 (+0.90s | 1.3%) 2 17 115 381
50 IM
31.76
31.76
100 IM
36.13
1:07.89
100 IM
1:07.89
IM 200 Y 2:25.86 Analysis 12 01/23/2026 AA AAA: 2:24.49 (+1.37s | 0.9%) 1 8 97 451
50 Fly
30.71
30.71
100 Back
37.94
1:08.65
100 IM
1:08.65
150 Breast
43.39
1:52.04
200 Free
33.82
2:25.86
100 IM
1:17.21
IM 400 Y 5:16.71 Analysis 12 12/20/2025 AA AAA: 5:07.79 (+8.92s | 2.8%) 1 16 93 294
50 Fly
32.33
32.33
100 Fly
39.09
1:11.42
100 Fly
1:11.42
150 Back
38.88
1:50.30
200 Back
40.40
2:30.70
100 Back
1:19.28
250 Breast
45.71
3:16.41
300 Breast
46.97
4:03.38
100 Breast
1:32.68
350 Free
37.61
4:40.99
400 Free
35.72
5:16.71
100 Free
1:13.33

Long course distance

Event Time Age Date Standard Next Standard Bayside Aquatics Maryland Swimming Eastern Zone USA
Free 50 M 32.63 12 05/17/2024 A AA: 31.89 (+0.74s | 2.3%) 1 1 23 495
Free 100 M 1:43.61 Analysis 12 04/30/2021 B: 1:25.59 (+18.02s | 17.4%) 2 12 332 1,000+
Free 200 M 3:53.09 Analysis 12 04/30/2021 B: 3:06.39 (+46.70s | 20.0%) 1 14 269 1,000+
Back 50 M 59.18 12 04/30/2021 B: 44.79 (+14.39s | 24.3%) 3 21 400 1,000+
Back 100 M 1:25.49 Analysis 12 05/17/2024 BB A: 1:24.79 (+0.70s | 0.8%) 1 2 35 556
50 Back
41.45
41.45
100 Back
44.04
1:25.49
100 Back
1:25.49
Back 200 M 3:11.56 Analysis 12 05/17/2024 BB A: 2:58.39 (+13.17s | 6.9%) 1 1 24 362
Breast 50 M 48.05 12 05/17/2024 B BB: 46.19 (+1.86s | 3.9%) 1 1 82 1,000+
Breast 100 M 1:44.50 Analysis 12 05/17/2024 B BB: 1:42.19 (+2.31s | 2.2%) 1 1 75 1,000+
50 Breast
50.60
50.60
100 Breast
53.90
1:44.50
100 Breast
1:44.50
Fly 50 M 53.19 12 04/30/2021 B: 41.79 (+11.40s | 21.4%) 2 9 262 1,000+
Fly 100 M 1:20.79 Analysis 12 05/17/2024 A AA: 1:18.69 (+2.10s | 2.6%) 1 1 10 237

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