Swimmer profile
Jonathan Kern
Male15-16Scarlet AquaticsNJ · EASTERN
SeasonUSA Swimming season runs Sept – Aug
Event
2018–19
2019–20
2020–21
2021–22
2022–23
2023–24
2024–25
2025–26
50 Free SCY
43.39
35.79
▲ 7.60
31.10
▲ 4.69
28.00
▲ 3.10
25.23
▲ 2.77
23.68
▲ 1.55
22.45
▲ 1.23
22.14
▲ 0.31
100 Free SCY
1:35.49
1:22.86
▲ 12.63
1:12.84
▲ 10.02
1:01.16
▲ 11.68
54.56
▲ 6.60
52.77
▲ 1.79
48.72
▲ 4.05
47.94
▲ 0.78
200 Free SCY
—
2:52.17
—
2:12.85
▲ 39.32
1:58.45
▲ 14.40
1:55.71
▲ 2.74
1:47.93
▲ 7.78
1:44.41
▲ 3.52
500 Free SCY
—
—
6:40.07
6:41.04
▼ 0.97
5:34.41
▲ 66.63
5:26.90
▲ 7.51
4:51.23
▲ 35.67
4:44.84
▲ 6.39
1000 Free SCY
—
—
—
—
—
10:49.63
10:12.06
▲ 37.57
9:52.40
▲ 19.66
1650 Free SCY
—
—
—
—
—
18:37.02
17:02.47
▲ 94.55
16:48.80
▲ 13.67
50 Back SCY
45.40
39.31
▲ 6.09
35.10
▲ 4.21
33.16
▲ 1.94
29.36
▲ 3.80
27.29
▲ 2.07
25.96
▲ 1.33
23.98
▲ 1.98
100 Back SCY
1:42.52
1:20.90
▲ 21.62
1:24.10
▼ 3.20
1:10.76
▲ 13.34
1:01.15
▲ 9.61
58.61
▲ 2.54
54.31
▲ 4.30
51.46
▲ 2.85
200 Back SCY
—
—
—
—
2:11.31
2:04.41
▲ 6.90
1:58.26
▲ 6.15
1:52.39
▲ 5.87
50 Breast SCY
57.19
50.75
▲ 6.44
45.16
▲ 5.59
40.58
▲ 4.58
35.71
▲ 4.87
—
—
—
100 Breast SCY
—
1:48.69
—
1:35.09
▲ 13.60
—
—
1:08.61
▲ 26.48
1:02.43
▲ 6.18
200 Breast SCY
—
—
—
—
—
2:39.36
2:25.72
▲ 13.64
2:18.90
▲ 6.82
50 Fly SCY
52.26
40.55
▲ 11.71
38.63
▲ 1.92
31.64
▲ 6.99
27.56
▲ 4.08
26.34
▲ 1.22
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—
100 Fly SCY
—
1:49.59
—
1:08.04
▲ 41.55
1:00.10
▲ 7.94
58.64
▲ 1.46
53.86
▲ 4.78
54.17
▼ 0.31
200 Fly SCY
—
—
—
—
2:28.74
2:08.06
▲ 20.68
1:59.73
▲ 8.33
1:57.96
▲ 1.77
100 IM SCY
1:44.07
1:29.74
▲ 14.33
1:19.00
▲ 10.74
1:10.94
▲ 8.06
1:02.21
▲ 8.73
59.92
▲ 2.29
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—
200 IM SCY
—
—
—
2:39.69
2:16.53
▲ 23.16
2:12.12
▲ 4.41
1:59.78
▲ 12.34
1:56.36
▲ 3.42
400 IM SCY
—
—
—
—
5:07.96
—
4:22.61
▲ 45.35
4:16.71
▲ 5.90
Improvement<0.5s0.5–2s2–5s5s+Slower
📊 All Attempts by Event
Chronological history of every recorded swim. Click an event to expand its attempt list.