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Calla Rosen

Age: 12 years old
Age Category: 11-12
Team: Nation's Capital Swim Club | Potomac Valley Swimming

Personal Best

Short course distance

Event Time Age Date Standard Next Standard Nation's Capital Swim Club Potomac Valley Swimming Eastern Zone USA
Free 50 Y 29.55 12 11/14/2025 BB A: 29.29 (+0.26s | 0.9%) 47 179 734 1,000+
Free 100 Y 1:03.11 Analysis 12 11/14/2025 A AA: 1:01.39 (+1.72s | 2.7%) 31 102 428 1,000+
50 Free
30.69
30.69
100 Free
32.42
1:03.11
100 Free
1:03.11
Free 200 Y 2:09.71 Analysis 12 02/13/2026 AA AAA: 2:07.69 (+2.02s | 1.6%) 6 18 109 445
50 Free
30.13
30.13
100 Free
32.62
1:02.75
100 Free
1:02.75
150 Free
33.50
1:36.25
200 Free
33.46
2:09.71
100 Free
1:06.96
Free 500 Y 5:37.98 Analysis 12 03/12/2026 AAA AAAA: 5:27.69 (+10.29s | 3.0%) 2 8 49 212
50 Free
30.75
30.75
100 Free
33.22
1:03.97
100 Free
1:03.97
150 Free
33.57
1:37.54
200 Free
34.13
2:11.67
100 Free
1:07.70
250 Free
34.32
2:45.99
300 Free
34.51
3:20.50
100 Free
1:08.83
350 Free
34.48
3:54.98
400 Free
34.55
4:29.53
100 Free
1:09.03
450 Free
34.69
5:04.22
500 Free
33.76
5:37.98
100 Free
1:08.45
Free 1000 Y 11:53.28 Analysis 12 01/03/2026 AA AAA: 11:49.29 (+3.99s | 0.6%) 1 4 20 93
50 Free
31.31
31.31
100 Free
34.11
1:05.42
100 Free
1:05.42
150 Free
35.37
1:40.79
200 Free
35.72
2:16.51
100 Free
1:11.09
250 Free
35.85
2:52.36
300 Free
36.42
3:28.78
100 Free
1:12.27
350 Free
36.92
4:05.70
400 Free
36.58
4:42.28
100 Free
1:13.50
450 Free
36.39
5:18.67
500 Free
37.01
5:55.68
100 Free
1:13.40
550 Free
36.27
6:31.95
600 Free
36.44
7:08.39
100 Free
1:12.71
650 Free
36.65
7:45.04
700 Free
36.01
8:21.05
100 Free
1:12.66
750 Free
36.27
8:57.32
800 Free
36.08
9:33.40
100 Free
1:12.35
850 Free
35.42
10:08.82
900 Free
35.73
10:44.55
100 Free
1:11.15
950 Free
35.21
11:19.76
1000 Free
33.52
11:53.28
100 Free
1:08.73
Free 1650 Y 19:22.71 Analysis 12 02/08/2026 AAA AAAA: 18:50.59 (+32.12s | 2.8%) 1 2 9 32
50 Free
30.87
30.87
100 Free
33.70
1:04.57
100 Free
1:04.57
150 Free
34.52
1:39.09
200 Free
34.73
2:13.82
100 Free
1:09.25
250 Free
35.29
2:49.11
300 Free
35.09
3:24.20
100 Free
1:10.38
350 Free
35.09
3:59.29
400 Free
35.56
4:34.85
100 Free
1:10.65
450 Free
35.73
5:10.58
500 Free
35.34
5:45.92
100 Free
1:11.07
550 Free
35.73
6:21.65
600 Free
35.75
6:57.40
100 Free
1:11.48
650 Free
35.66
7:33.06
700 Free
35.43
8:08.49
100 Free
1:11.09
750 Free
35.60
8:44.09
800 Free
35.68
9:19.77
100 Free
1:11.28
850 Free
35.83
9:55.60
900 Free
35.70
10:31.30
100 Free
1:11.53
950 Free
35.64
11:06.94
1000 Free
35.08
11:42.02
100 Free
1:10.72
1050 Free
35.73
12:17.75
1100 Free
35.50
12:53.25
100 Free
1:11.23
1150 Free
35.29
13:28.54
1200 Free
35.56
14:04.10
100 Free
1:10.85
1250 Free
35.64
14:39.74
1300 Free
35.60
15:15.34
100 Free
1:11.24
1350 Free
35.45
15:50.79
1400 Free
35.60
16:26.39
100 Free
1:11.05
1450 Free
35.77
17:02.16
1500 Free
35.45
17:37.61
100 Free
1:11.22
1550 Free
35.76
18:13.37
1600 Free
35.45
18:48.82
100 Free
1:11.21
1650 Free
33.89
19:22.71
Back 50 Y 34.63 12 11/14/2025 BB A: 33.19 (+1.44s | 4.2%) 39 172 649 1,000+
Back 100 Y 1:13.10 Analysis 12 11/14/2025 BB A: 1:12.99 (+0.11s | 0.2%) 30 116 484 1,000+
50 Back
36.18
36.18
100 Back
36.92
1:13.10
100 Back
1:13.10
Back 200 Y 2:29.42 Analysis 12 11/14/2025 A AA: 2:27.49 (+1.93s | 1.3%) 12 32 158 431
50 Back
35.57
35.57
100 Back
37.76
1:13.33
100 Back
1:13.33
150 Back
38.35
1:51.68
200 Back
37.74
2:29.42
100 Back
1:16.09
Breast 50 Y 35.41 12 02/13/2026 AA AAA: 34.59 (+0.82s | 2.3%) 8 25 105 354
Breast 100 Y 1:16.71 Analysis 12 03/12/2026 AA AAA: 1:15.09 (+1.62s | 2.1%) 6 20 98 429
50 Breast
35.62
35.62
100 Breast
41.09
1:16.71
100 Breast
1:16.71
Breast 200 Y 2:43.81 Analysis 12 01/17/2026 AA AAA: 2:41.69 (+2.12s | 1.3%) 2 12 56 166
50 Breast
37.22
37.22
100 Breast
41.88
1:19.10
100 Breast
1:19.10
150 Breast
42.04
2:01.14
200 Breast
42.67
2:43.81
100 Breast
1:24.71
Fly 50 Y 30.64 12 02/13/2026 A AA: 30.29 (+0.35s | 1.1%) 14 47 215 727
Fly 100 Y 1:07.51 Analysis 12 03/12/2026 AA AAA: 1:05.19 (+2.32s | 3.4%) 12 28 125 530
50 Fly
31.45
31.45
100 Fly
36.06
1:07.51
100 Fly
1:07.51
Fly 200 Y 2:38.45 Analysis 12 10/10/2025 BB A: 2:37.19 (+1.26s | 0.8%) 8 23 115 287
50 Fly
34.28
34.28
100 Fly
40.59
1:14.87
100 Fly
1:14.87
150 Fly
42.36
1:57.23
200 Fly
41.22
2:38.45
100 Fly
1:23.58
IM 100 Y 1:09.87 Analysis 12 01/17/2026 AA AAA: 1:06.99 (+2.88s | 4.1%) 14 43 188 585
50 IM
33.69
33.69
100 IM
36.18
1:09.87
100 IM
1:09.87
IM 200 Y 2:25.01 Analysis 12 01/17/2026 AA AAA: 2:24.49 (+0.52s | 0.4%) 4 14 74 315
50 Fly
32.32
32.32
100 Back
38.03
1:10.35
100 IM
1:10.35
150 Breast
41.36
1:51.71
200 Free
33.30
2:25.01
100 IM
1:14.66

Long course distance

Event Time Age Date Standard Next Standard Nation's Capital Swim Club Potomac Valley Swimming Eastern Zone USA
Free 100 M 1:10.24 Analysis 12 05/15/2026 AA AAA: 1:07.19 (+3.05s | 4.3%) 7 13 118 881
Free 200 M 2:28.01 Analysis 12 05/15/2026 AA AAA: 2:26.49 (+1.52s | 1.0%) 5 6 59 388
Free 400 M 5:08.27 Analysis 12 05/15/2026 AAA AAAA: 4:54.69 (+13.58s | 4.4%) 2 3 30 246
50 Free
34.42
34.42
100 Free
38.21
1:12.63
100 Free
1:12.63
150 Free
38.73
1:51.36
200 Free
39.69
2:31.05
100 Free
1:18.42
250 Free
39.70
3:10.75
300 Free
40.22
3:50.97
100 Free
1:19.92
350 Free
39.07
4:30.04
400 Free
38.23
5:08.27
100 Free
1:17.30
Back 50 M 40.31 12 05/15/2026 BB A: 38.39 (+1.92s | 4.8%) 22 41 333 1,000+
Breast 50 M 41.50 12 05/15/2026 A AA: 40.89 (+0.61s | 1.5%) 4 6 80 539
Breast 100 M 1:28.41 Analysis 12 05/15/2026 AA AAA: 1:25.89 (+2.52s | 2.9%) 5 7 41 287
Fly 50 M 34.75 12 05/15/2026 A AA: 34.29 (+0.46s | 1.3%) 5 10 112 780

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