Swimmer profile
John Jacobson
Male13-14Yankton Swim TeamSD · CENTRAL
SeasonUSA Swimming season runs Sept – Aug
Event
2017–18
2018–19
2020–21
2021–22
2022–23
2023–24
2024–25
2025–26
50 Free LCM
1:18.24
1:09.30
▲ 8.94
41.74
▲ 27.56
39.13
▲ 2.61
35.11
▲ 4.02
32.17
▲ 2.94
31.99
▲ 0.18
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100 Free LCM
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2:23.18
1:37.43
▲ 45.75
1:26.43
▲ 11.00
1:15.77
▲ 10.66
1:11.13
▲ 4.64
1:06.48
▲ 4.65
1:09.22
▼ 2.74
200 Free LCM
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3:21.55
3:05.33
▲ 16.22
2:46.46
▲ 18.87
2:31.88
▲ 14.58
2:24.89
▲ 6.99
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400 Free LCM
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—
—
—
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5:32.60
5:06.04
▲ 26.56
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50 Back LCM
1:35.74
1:32.55
▲ 3.19
54.23
▲ 38.32
49.52
▲ 4.71
43.35
▲ 6.17
41.45
▲ 1.90
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100 Back LCM
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3:06.57
1:55.50
▲ 71.07
1:47.45
▲ 8.05
1:33.60
▲ 13.85
1:27.28
▲ 6.32
1:18.41
▲ 8.87
1:24.30
▼ 5.89
50 Breast LCM
1:46.75
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58.85
▲ 47.90
54.91
▲ 3.94
45.60
▲ 9.31
45.11
▲ 0.49
42.67
▲ 2.44
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100 Breast LCM
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2:17.43
1:54.74
▲ 22.69
1:42.39
▲ 12.35
1:33.80
▲ 8.59
1:32.06
▲ 1.74
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50 Fly LCM
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—
—
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41.08
36.57
▲ 4.51
33.62
▲ 2.95
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100 Fly LCM
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1:34.78
1:21.66
▲ 13.12
1:14.40
▲ 7.26
1:18.13
▼ 3.73
200 IM LCM
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4:02.00
3:34.65
▲ 27.35
3:06.96
▲ 27.69
2:54.72
▲ 12.24
2:42.14
▲ 12.58
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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.