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Madeleine Koser

Age: 14 years old
Age Category: 13-14
Team: Rockville Montgomery Swim Club | Potomac Valley Swimming

Personal Best

Short course distance

Event Time Age Date Standard Next Standard Rockville Montgomery Swim Club Potomac Valley Swimming Eastern Zone USA
Free 50 Y 27.85 14 10/17/2025 A AA: 26.69 (+1.16s | 4.2%) 48 261 1,000+ 1,000+
Free 100 Y 59.32 Analysis 14 12/04/2025 A AA: 58.29 (+1.03s | 1.7%) 37 181 708 1,000+
50 Free
29.60
29.60
100 Free
29.72
59.32
100 Free
59.32
Free 200 Y 2:08.81 Analysis 14 12/04/2025 A AA: 2:06.19 (+2.62s | 2.0%) 33 151 578 1,000+
50 Free
31.12
31.12
100 Free
32.52
1:03.64
100 Free
1:03.64
150 Free
33.64
1:37.28
200 Free
31.53
2:08.81
100 Free
1:05.17
Free 500 Y 5:54.87 Analysis 14 01/16/2026 BB A: 5:53.39 (+1.48s | 0.4%) 42 178 689 1,000+
50 Free
33.66
33.66
100 Free
34.89
1:08.55
100 Free
1:08.55
150 Free
35.75
1:44.30
200 Free
36.19
2:20.49
100 Free
1:11.94
250 Free
36.18
2:56.67
300 Free
36.78
3:33.45
100 Free
1:12.96
350 Free
35.74
4:09.19
400 Free
35.78
4:44.97
100 Free
1:11.52
450 Free
36.17
5:21.14
500 Free
33.73
5:54.87
100 Free
1:09.90
Free 1000 Y 12:01.65 Analysis 14 12/04/2025 A AA: 11:39.09 (+22.56s | 3.1%) 23 76 283 1,000+
50 Free
32.15
32.15
100 Free
34.93
1:07.09
100 Free
1:07.09
150 Free
35.98
1:43.07
200 Free
36.56
2:19.63
100 Free
1:12.54
250 Free
37.08
2:56.71
300 Free
36.62
3:33.33
100 Free
1:13.70
350 Free
36.89
4:10.22
400 Free
36.14
4:46.36
100 Free
1:13.03
450 Free
37.29
5:23.65
500 Free
36.62
6:00.27
100 Free
1:13.91
550 Free
36.34
6:36.61
600 Free
36.99
7:13.60
100 Free
1:13.33
650 Free
37.18
7:50.78
700 Free
37.06
8:27.84
100 Free
1:14.24
750 Free
36.92
9:04.76
800 Free
36.50
9:41.26
100 Free
1:13.42
850 Free
36.87
10:18.13
900 Free
35.92
10:54.05
100 Free
1:12.79
950 Free
35.55
11:29.60
1000 Free
32.05
12:01.65
100 Free
1:07.60
Free 1650 Y 19:57.79 Analysis 14 02/08/2026 A AA: 19:28.79 (+29.00s | 2.4%) 13 53 181 760
50 Free
31.24
31.24
100 Free
34.86
1:06.10
100 Free
1:06.10
150 Free
36.31
1:42.41
200 Free
37.11
2:19.52
100 Free
1:13.42
250 Free
36.50
2:56.02
300 Free
36.93
3:32.95
100 Free
1:13.43
350 Free
35.89
4:08.84
400 Free
36.75
4:45.59
100 Free
1:12.64
450 Free
36.96
5:22.55
500 Free
36.26
5:58.81
100 Free
1:13.22
550 Free
36.98
6:35.79
600 Free
36.28
7:12.07
100 Free
1:13.26
650 Free
36.94
7:49.01
700 Free
36.20
8:25.21
100 Free
1:13.14
750 Free
36.57
9:01.78
800 Free
35.90
9:37.68
100 Free
1:12.47
850 Free
36.34
10:14.02
900 Free
36.82
10:50.84
100 Free
1:13.16
950 Free
36.55
11:27.39
1000 Free
36.54
12:03.93
100 Free
1:13.09
1050 Free
36.55
12:40.48
1100 Free
36.62
13:17.10
100 Free
1:13.17
1150 Free
36.86
13:53.96
1200 Free
37.30
14:31.26
100 Free
1:14.16
1250 Free
36.51
15:07.77
1300 Free
36.60
15:44.37
100 Free
1:13.11
1350 Free
36.90
16:21.27
1400 Free
36.30
16:57.57
100 Free
1:13.20
1450 Free
36.05
17:33.62
1500 Free
36.43
18:10.05
100 Free
1:12.48
1550 Free
36.94
18:46.99
1600 Free
36.29
19:23.28
100 Free
1:13.23
1650 Free
34.51
19:57.79
Back 50 Y 34.87 14 11/07/2025 64 393 1,000+ 1,000+
Back 100 Y 1:16.35 Analysis 14 03/20/2026 B BB: 1:11.39 (+4.96s | 6.5%) 78 478 1,000+ 1,000+
50 Back
37.55
37.55
100 Back
38.80
1:16.35
100 Back
1:16.35
Breast 50 Y 34.70 14 01/16/2026 19 96 324 1,000+
Breast 100 Y 1:15.19 Analysis 14 02/20/2026 A AA: 1:12.89 (+2.30s | 3.1%) 22 103 390 1,000+
50 Breast
35.93
35.93
100 Breast
39.26
1:15.19
100 Breast
1:15.19
Breast 200 Y 2:42.96 Analysis 14 02/13/2026 A AA: 2:36.89 (+6.07s | 3.7%) 19 90 359 1,000+
50 Breast
38.11
38.11
100 Breast
41.56
1:19.67
100 Breast
1:19.67
150 Breast
42.02
2:01.69
200 Breast
41.27
2:42.96
100 Breast
1:23.29
Fly 50 Y 31.40 14 03/20/2026 51 297 939 1,000+
IM 200 Y 2:34.05 Analysis 14 10/17/2025 BB A: 2:27.19 (+6.86s | 4.5%) 55 278 1,000+ 1,000+
50 Fly
37.23
37.23
100 Back
39.22
1:16.45
100 IM
1:16.45
150 Breast
44.09
2:00.54
200 Free
33.51
2:34.05
100 IM
1:17.60

Long course distance

Event Time Age Date Standard Next Standard Rockville Montgomery Swim Club Potomac Valley Swimming Eastern Zone USA

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