Swimmer profile
Collin Holgerson
Male17-18SwimAtlantaGA · SOUTHERN
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
35.41
34.07
▲ 1.34
28.45
▲ 5.62
26.00
▲ 2.45
25.71
▲ 0.29
25.90
▼ 0.19
25.20
▲ 0.70
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100 Free LCM
1:21.71
1:14.04
▲ 7.67
1:04.16
▲ 9.88
57.76
▲ 6.40
59.71
▼ 1.95
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—
—
200 Free LCM
2:54.70
2:42.41
▲ 12.29
2:17.14
▲ 25.27
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—
—
—
—
400 Free LCM
—
5:40.00
4:55.38
▲ 44.62
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—
—
—
—
800 Free LCM
—
—
10:07.21
—
—
—
—
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50 Back LCM
37.16
34.79
▲ 2.37
30.73
▲ 4.06
—
—
28.01
▲ 2.72
25.64
▲ 2.37
25.70
▼ 0.06
100 Back LCM
1:21.26
1:15.59
▲ 5.67
1:04.62
▲ 10.97
59.80
▲ 4.82
58.60
▲ 1.20
1:00.09
▼ 1.49
55.19
▲ 4.90
55.30
▼ 0.11
200 Back LCM
—
2:44.18
2:18.67
▲ 25.51
2:09.33
▲ 9.34
2:08.56
▲ 0.77
—
1:59.45
▲ 9.11
2:02.90
▼ 3.45
50 Breast LCM
46.15
40.76
▲ 5.39
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—
—
—
28.45
▲ 12.31
28.62
▼ 0.17
100 Breast LCM
1:41.79
1:30.52
▲ 11.27
1:18.51
▲ 12.01
1:06.70
▲ 11.81
1:05.73
▲ 0.97
1:05.64
▲ 0.09
1:02.02
▲ 3.62
1:03.75
▼ 1.73
200 Breast LCM
—
3:17.76
2:47.11
▲ 30.65
2:24.08
▲ 23.03
2:24.39
▼ 0.31
—
2:21.62
▲ 2.77
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50 Fly LCM
47.29
34.37
▲ 12.92
—
—
—
26.63
▲ 7.74
—
—
100 Fly LCM
1:54.71
1:22.17
▲ 32.54
1:07.63
▲ 14.54
1:01.17
▲ 6.46
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—
55.41
▲ 5.76
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200 Fly LCM
—
—
2:36.04
2:21.93
▲ 14.11
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—
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200 IM LCM
3:13.24
2:55.07
▲ 18.17
2:25.52
▲ 29.55
2:10.81
▲ 14.71
2:11.90
▼ 1.09
—
2:04.51
▲ 7.39
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400 IM LCM
—
6:37.44
5:10.27
▲ 87.17
4:45.68
▲ 24.59
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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.