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John Duffy

Age: 15 years old
Age Category: 15-16
Team: Kingfish Swimming Medfield | New England Swimming

Personal Best

Short course distance

Event Time Age Date Standard Next Standard Kingfish Swimming Medfield New England Swimming Eastern Zone USA
Free 50 Y 26.57 15 07/30/2026 B BB: 26.29 (+0.28s | 1.1%) 16 351 1,000+ 1,000+
Free 100 Y 57.22 Analysis 15 07/30/2026 BB A: 53.19 (+4.03s | 7.0%) 15 306 1,000+ 1,000+
50 Free
27.42
27.42
100 Free
29.80
57.22
100 Free
57.22
Free 200 Y 2:04.77 Analysis 15 07/30/2026 BB A: 1:56.59 (+8.18s | 6.6%) 11 232 1,000+ 1,000+
50 Free
27.98
27.98
100 Free
30.87
58.85
100 Free
58.85
150 Free
33.15
1:32.00
200 Free
32.76
2:04.77
100 Free
1:05.92
Free 500 Y 5:43.35 Analysis 15 03/20/2026 B BB: 5:42.09 (+1.26s | 0.4%) 11 193 1,000+ 1,000+
50 Free
30.42
30.42
100 Free
33.80
1:04.22
100 Free
1:04.22
150 Free
34.22
1:38.44
200 Free
34.78
2:13.22
100 Free
1:09.00
250 Free
35.26
2:48.48
300 Free
35.59
3:24.07
100 Free
1:10.85
350 Free
35.38
3:59.45
400 Free
34.80
4:34.25
100 Free
1:10.18
450 Free
35.01
5:09.26
500 Free
34.09
5:43.35
100 Free
1:09.10
Free 1000 Y 11:36.16 Analysis 15 07/30/2026 BB A: 11:01.59 (+34.57s | 5.0%) 3 80 509 1,000+
50 Free
30.29
30.29
100 Free
32.92
1:03.21
100 Free
1:03.21
150 Free
33.90
1:37.11
200 Free
35.25
2:12.36
100 Free
1:09.15
250 Free
35.33
2:47.69
300 Free
35.11
3:22.80
100 Free
1:10.44
350 Free
35.36
3:58.16
400 Free
35.45
4:33.61
100 Free
1:10.81
450 Free
35.41
5:09.02
500 Free
35.62
5:44.64
100 Free
1:11.03
550 Free
35.25
6:19.89
600 Free
35.63
6:55.52
100 Free
1:10.88
650 Free
35.54
7:31.06
700 Free
35.14
8:06.20
100 Free
1:10.68
750 Free
35.46
8:41.66
800 Free
36.04
9:17.70
100 Free
1:11.50
850 Free
34.70
9:52.40
900 Free
35.26
10:27.66
100 Free
1:09.96
950 Free
34.79
11:02.45
1000 Free
33.71
11:36.16
100 Free
1:08.50
Back 100 Y 1:15.23 Analysis 15 11/14/2025 B: 1:07.49 (+7.74s | 10.3%) 23 390 1,000+ 1,000+
50 Back
36.36
36.36
100 Back
38.87
1:15.23
100 Back
1:15.23
Breast 50 Y 37.41 15 03/20/2026 B: 36.69 (+0.72s | 1.9%) 8 221 1,000+ 1,000+
Breast 100 Y 1:17.38 Analysis 15 07/30/2026 B: 1:16.89 (+0.49s | 0.6%) 8 272 1,000+ 1,000+
50 Breast
37.16
37.16
100 Breast
40.22
1:17.38
100 Breast
1:17.38
Fly 50 Y 30.68 15 07/30/2026 B BB: 29.29 (+1.39s | 4.5%) 12 250 1,000+ 1,000+
Fly 100 Y 1:08.33 Analysis 15 07/30/2026 B: 1:07.19 (+1.14s | 1.7%) 18 287 1,000+ 1,000+
50 Fly
31.72
31.72
100 Fly
36.61
1:08.33
100 Fly
1:08.33
IM 200 Y 2:24.83 Analysis 15 07/30/2026 B BB: 2:20.19 (+4.64s | 3.2%) 10 240 1,000+ 1,000+
50 Fly
31.50
31.50
100 Back
36.73
1:08.23
100 IM
1:08.23
150 Breast
43.52
1:51.75
200 Free
33.08
2:24.83
100 IM
1:16.60

Long course distance

Event Time Age Date Standard Next Standard Kingfish Swimming Medfield New England Swimming Eastern Zone USA
Free 50 M 30.95 15 06/26/2026 B BB: 30.59 (+0.36s | 1.2%) 8 244 915 1,000+
Free 100 M 1:06.29 Analysis 15 06/26/2026 BB A: 1:01.49 (+4.80s | 7.2%) 7 215 805 1,000+
Free 200 M 2:27.39 Analysis 15 06/26/2026 B BB: 2:25.39 (+2.00s | 1.4%) 5 178 700 1,000+
Free 400 M 5:15.92 Analysis 15 06/26/2026 B BB: 5:10.19 (+5.73s | 1.8%) 4 133 515 1,000+
Back 50 M 38.68 15 06/26/2026 B: 37.79 (+0.89s | 2.3%) 2 173 571 1,000+
Back 100 M 1:27.61 Analysis 15 06/06/2026 B: 1:19.39 (+8.22s | 9.4%) 6 216 791 1,000+
Breast 50 M 41.01 15 06/26/2026 B BB: 38.79 (+2.22s | 5.4%) 3 137 446 1,000+
Breast 100 M 1:40.32 Analysis 15 06/06/2026 B: 1:29.49 (+10.83s | 10.8%) 5 207 736 1,000+
Fly 50 M 36.40 15 06/26/2026 B: 35.69 (+0.71s | 2.0%) 4 189 637 1,000+
Fly 100 M 1:24.22 Analysis 15 06/26/2026 B: 1:16.79 (+7.43s | 8.8%) 8 224 761 1,000+
IM 200 M 3:02.14 Analysis 15 06/06/2026 B: 2:56.19 (+5.95s | 3.3%) 8 181 730 1,000+

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