Swimmer profile
Gus Koh
MaleOpen / SeniorNASA Wildcat AquaticsIL · CENTRALCollege athlete · Duke UniversityD1
SeasonUSA Swimming season runs Sept – Aug
Event
2015–16
2016–17
2017–18
2018–19
2020–21
2021–22
2022–23
2023–24
2024–25
2025–26
50 Free LCM
39.02
34.53
▲ 4.49
33.42
▲ 1.11
33.46
▼ 0.04
27.68
▲ 5.78
26.40
▲ 1.28
25.80
▲ 0.60
25.66
▲ 0.14
24.62
▲ 1.04
24.96
▼ 0.34
100 Free LCM
1:30.89
1:20.43
▲ 10.46
1:14.82
▲ 5.61
1:10.89
▲ 3.93
58.76
▲ 12.13
57.95
▲ 0.81
55.34
▲ 2.61
54.45
▲ 0.89
53.18
▲ 1.27
—
200 Free LCM
3:22.21
—
2:48.21
▲ 34.00
—
2:08.76
▲ 39.45
2:06.65
▲ 2.11
2:01.47
▲ 5.18
2:06.05
▼ 4.58
2:00.04
▲ 6.01
2:13.67
▼ 13.63
400 Free LCM
—
—
6:00.57
—
4:42.52
▲ 78.05
4:31.63
▲ 10.89
4:21.09
▲ 10.54
4:25.62
▼ 4.53
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—
800 Free LCM
—
—
—
—
—
9:41.09
—
—
—
—
50 Back LCM
44.80
39.40
▲ 5.40
39.07
▲ 0.33
37.31
▲ 1.76
—
—
28.23
▲ 9.08
27.61
▲ 0.62
27.17
▲ 0.44
—
100 Back LCM
1:36.45
1:26.65
▲ 9.80
1:24.73
▲ 1.92
1:19.92
▲ 4.81
1:07.85
▲ 12.07
1:05.24
▲ 2.61
1:00.27
▲ 4.97
58.76
▲ 1.51
57.85
▲ 0.91
1:08.89
▼ 11.04
200 Back LCM
—
—
3:01.26
—
2:24.69
▲ 36.57
2:21.23
▲ 3.46
2:14.69
▲ 6.54
2:08.50
▲ 6.19
2:06.25
▲ 2.25
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50 Breast LCM
—
53.00
—
—
—
—
—
—
29.33
▲ 23.67
30.85
▼ 1.52
100 Breast LCM
2:00.04
—
—
—
1:24.85
▲ 35.19
—
—
—
1:07.94
▲ 16.91
—
200 Breast LCM
—
—
—
—
—
—
—
—
—
2:46.50
50 Fly LCM
45.54
41.89
▲ 3.65
42.39
▼ 0.50
38.21
▲ 4.18
—
—
—
—
26.33
▲ 11.88
26.20
▲ 0.13
100 Fly LCM
—
—
1:41.55
—
—
1:06.57
▲ 34.98
1:05.86
▲ 0.71
1:01.03
▲ 4.83
59.09
▲ 1.94
—
200 IM LCM
—
3:24.37
3:14.98
▲ 9.39
3:01.98
▲ 13.00
—
2:29.81
▲ 32.17
2:17.96
▲ 11.85
—
2:11.04
▲ 6.92
2:25.37
▼ 14.33
400 IM LCM
—
—
—
—
—
5:06.42
—
—
—
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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.