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Ann Tjeerdsma

Age: 16 years old
Age Category: 15-16
Team: Pierre Swim Team | South Dakota Swimming

Personal Best

Short course distance

Event Time Age Date Standard Next Standard Pierre Swim Team South Dakota Swimming Central Zone USA
Free 50 Y 28.51 16 01/04/2025 BB A: 27.29 (+1.22s | 4.3%) 2 31 1,000+ 1,000+
Free 100 Y 1:01.76 Analysis 16 11/08/2025 BB A: 58.89 (+2.87s | 4.6%) 1 36 1,000+ 1,000+
50 Free
29.85
29.85
100 Free
31.91
1:01.76
100 Free
1:01.76
Free 200 Y 2:15.24 Analysis 16 11/08/2025 BB A: 2:07.69 (+7.55s | 5.6%) 1 30 800 1,000+
50 Free
31.38
31.38
100 Free
33.85
1:05.23
100 Free
1:05.23
150 Free
35.18
1:40.41
200 Free
34.83
2:15.24
100 Free
1:10.01
Free 500 Y 6:06.69 Analysis 16 02/26/2026 BB A: 5:43.69 (+23.00s | 6.3%) 1 27 564 1,000+
50 Free
32.10
32.10
100 Free
35.04
1:07.14
100 Free
1:07.14
150 Free
36.32
1:43.46
200 Free
37.79
2:21.25
100 Free
1:14.11
250 Free
38.07
2:59.32
300 Free
38.02
3:37.34
100 Free
1:16.09
350 Free
38.26
4:15.60
400 Free
38.50
4:54.10
100 Free
1:16.76
450 Free
37.71
5:31.81
500 Free
34.88
6:06.69
100 Free
1:12.59
Free 1000 Y 12:54.21 Analysis 16 02/26/2026 B BB: 12:53.49 (+0.72s | 0.1%) 1 27 218 1,000+
50 Free
33.03
33.03
100 Free
36.27
1:09.30
100 Free
1:09.30
150 Free
37.96
1:47.26
200 Free
38.17
2:25.43
100 Free
1:16.13
250 Free
38.70
3:04.13
300 Free
39.06
3:43.19
100 Free
1:17.76
350 Free
38.96
4:22.15
400 Free
39.29
5:01.44
100 Free
1:18.25
450 Free
39.20
5:40.64
500 Free
39.58
6:20.22
100 Free
1:18.78
550 Free
40.19
7:00.41
600 Free
39.50
7:39.91
100 Free
1:19.69
650 Free
39.89
8:19.80
700 Free
39.91
8:59.71
100 Free
1:19.80
750 Free
39.44
9:39.15
800 Free
40.32
10:19.47
100 Free
1:19.76
850 Free
39.60
10:59.07
900 Free
39.30
11:38.37
100 Free
1:18.90
950 Free
38.55
12:16.92
1000 Free
37.29
12:54.21
100 Free
1:15.84
Free 1650 Y 21:05.33 Analysis 16 02/26/2026 BB A: 19:56.49 (+68.84s | 5.4%) 1 11 164 1,000+
50 Free
33.57
33.57
100 Free
36.39
1:09.96
100 Free
1:09.96
150 Free
37.62
1:47.58
200 Free
38.51
2:26.09
100 Free
1:16.13
250 Free
38.25
3:04.34
300 Free
38.35
3:42.69
100 Free
1:16.60
350 Free
38.70
4:21.39
400 Free
38.62
5:00.01
100 Free
1:17.32
450 Free
38.08
5:38.09
500 Free
38.60
6:16.69
100 Free
1:16.68
550 Free
38.60
6:55.29
600 Free
39.16
7:34.45
100 Free
1:17.76
650 Free
39.25
8:13.70
700 Free
39.45
8:53.15
100 Free
1:18.70
750 Free
38.95
9:32.10
800 Free
39.17
10:11.27
100 Free
1:18.12
850 Free
38.76
10:50.03
900 Free
38.07
11:28.10
100 Free
1:16.83
950 Free
38.38
12:06.48
1000 Free
37.96
12:44.44
100 Free
1:16.34
1050 Free
37.60
13:22.04
1100 Free
38.93
14:00.97
100 Free
1:16.53
1150 Free
39.09
14:40.06
1200 Free
38.67
15:18.73
100 Free
1:17.76
1250 Free
38.88
15:57.61
1300 Free
38.51
16:36.12
100 Free
1:17.39
1350 Free
39.48
17:15.60
1400 Free
39.75
17:55.35
100 Free
1:19.23
1450 Free
38.42
18:33.77
1500 Free
38.04
19:11.81
100 Free
1:16.46
1550 Free
38.77
19:50.58
1600 Free
38.71
20:29.29
100 Free
1:17.48
1650 Free
36.04
21:05.33
Back 100 Y 1:09.81 Analysis 16 12/13/2024 B BB: 1:09.39 (+0.42s | 0.6%) 1 20 712 1,000+
50 Back
34.29
34.29
100 Back
35.52
1:09.81
100 Back
1:09.81
Back 200 Y 2:28.76 Analysis 16 12/13/2024 BB A: 2:19.09 (+9.67s | 6.5%) 1 17 444 1,000+
25 Back
17.66
17.66
50 Back
18.77
36.43
50 Back
36.43
75 Back
19.15
55.58
100 Back
19.85
1:15.43
50 Back
39.00
125 Back
19.64
1:35.07
150 Back
20.50
1:55.57
50 Back
40.14
175 Back
20.24
2:15.81
200 Back
12.95
2:28.76
50 Back
33.19
Breast 50 Y 39.14 16 01/30/2026 2 28 502 1,000+
Breast 100 Y 1:25.59 Analysis 16 01/30/2026 B BB: 1:19.79 (+5.80s | 6.8%) 3 35 773 1,000+
50 Breast
40.84
40.84
100 Breast
44.75
1:25.59
100 Breast
1:25.59
Breast 200 Y 3:08.38 Analysis 16 01/25/2025 B: 3:05.99 (+2.39s | 1.3%) 3 32 541 1,000+
50 Breast
42.82
42.82
100 Breast
47.65
1:30.47
100 Breast
1:30.47
150 Breast
49.74
2:20.21
200 Breast
48.17
3:08.38
100 Breast
1:37.91
Fly 50 Y 31.51 16 01/30/2026 2 22 579 1,000+
Fly 100 Y 1:16.98 Analysis 16 11/08/2025 B: 1:14.39 (+2.59s | 3.4%) 2 36 844 1,000+
50 Fly
34.25
34.25
100 Fly
42.73
1:16.98
100 Fly
1:16.98
IM 200 Y 2:37.99 Analysis 16 01/30/2026 B BB: 2:34.29 (+3.70s | 2.3%) 1 34 757 1,000+
50 Fly
33.76
33.76
100 Back
40.34
1:14.10
100 IM
1:14.10
150 Breast
48.36
2:02.46
200 Free
35.53
2:37.99
100 IM
1:23.89
IM 400 Y 5:43.93 Analysis 16 01/04/2025 B BB: 5:29.69 (+14.24s | 4.1%) 1 27 370 1,000+
50 Fly
37.83
37.83
100 Fly
44.37
1:22.20
100 Fly
1:22.20
150 Back
42.79
2:04.99
200 Back
42.36
2:47.35
100 Back
1:25.15
250 Breast
50.53
3:37.88
300 Breast
50.35
4:28.23
100 Breast
1:40.88
350 Free
39.23
5:07.46
400 Free
36.47
5:43.93
100 Free
1:15.70

Long course distance

Event Time Age Date Standard Next Standard Pierre Swim Team South Dakota Swimming Central Zone USA
Free 50 M 34.07 16 05/30/2026 B BB: 33.49 (+0.58s | 1.7%) 3 40 817 1,000+
Free 100 M 1:13.01 Analysis 16 05/30/2026 B BB: 1:12.79 (+0.22s | 0.3%) 1 35 699 1,000+
50 Free
35.96
35.96
100 Free
37.05
1:13.01
100 Free
1:13.01
Free 200 M 2:47.51 Analysis 16 06/29/2024 B BB: 2:37.09 (+10.42s | 6.2%) 2 40 608 1,000+
50 Free
38.48
38.48
100 Free
43.03
1:21.51
100 Free
1:21.51
150 Free
43.75
2:05.26
200 Free
42.25
2:47.51
100 Free
1:26.00
Free 400 M 5:51.31 Analysis 16 06/23/2023 B BB: 5:29.89 (+21.42s | 6.1%) 1 34 447 1,000+
Free 800 M 12:30.00 Analysis 16 06/28/2025 B: 12:17.79 (+12.21s | 1.6%) 1 31 247 1,000+
50 Free
42.15
42.15
100 Free
46.27
1:28.42
100 Free
1:28.42
150 Free
47.65
2:16.07
200 Free
48.52
3:04.59
100 Free
1:36.17
250 Free
48.32
3:52.91
300 Free
47.79
4:40.70
100 Free
1:36.11
350 Free
48.14
5:28.84
400 Free
48.02
6:16.86
100 Free
1:36.16
450 Free
47.28
7:04.14
500 Free
47.44
7:51.58
100 Free
1:34.72
550 Free
48.16
8:39.74
600 Free
47.38
9:27.12
100 Free
1:35.54
650 Free
47.94
10:15.06
700 Free
45.81
11:00.87
100 Free
1:33.75
750 Free
30.79
11:31.66
800 Free
58.34
12:30.00
100 Free
1:29.13
Back 50 M 38.87 16 11/19/2022 1 21 337 1,000+
Back 100 M 1:26.14 Analysis 16 06/29/2024 B BB: 1:20.69 (+5.45s | 6.3%) 2 32 584 1,000+
50 Back
41.82
41.82
100 Back
44.32
1:26.14
100 Back
1:26.14
Back 200 M 3:08.01 Analysis 16 06/23/2023 B: 3:06.79 (+1.22s | 0.6%) 2 31 427 1,000+
Breast 50 M 47.35 16 11/19/2022 3 31 320 1,000+
Breast 100 M 1:43.29 Analysis 16 06/08/2024 B: 1:38.59 (+4.70s | 4.6%) 2 42 553 1,000+
50 Breast
49.92
49.92
100 Breast
53.37
1:43.29
100 Breast
1:43.29
Fly 25 M 28.45 16 11/17/2018 2 3 3 4
Fly 50 M 36.85 16 05/30/2026 1 22 371 1,000+
Fly 100 M 1:34.04 Analysis 16 05/30/2026 B: 1:24.29 (+9.75s | 10.4%) 2 42 533 1,000+
50 Fly
43.52
43.52
100 Fly
50.52
1:34.04
100 Fly
1:34.04
IM 200 M 3:09.70 Analysis 16 11/19/2022 B BB: 2:57.49 (+12.21s | 6.4%) 1 37 517 1,000+
50 Fly
41.12
41.12
100 Back
46.36
1:27.48
100 IM
1:27.48
150 Breast
59.73
2:27.21
200 Free
42.49
3:09.70
100 IM
1:42.22
IM 400 M 6:48.44 Analysis 16 05/30/2026 B: 6:44.69 (+3.75s | 0.9%) 1 28 242 1,000+
50 Fly
40.71
40.71
100 Fly
50.21
1:30.92
100 Fly
1:30.92
150 Back
53.62
2:24.54
200 Back
53.27
3:17.81
100 Back
1:46.89
250 Breast
57.24
4:15.05
300 Breast
59.53
5:14.58
100 Breast
1:56.77
350 Free
48.28
6:02.86
400 Free
45.58
6:48.44
100 Free
1:33.86

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