Swimmer profile
Preston Chang
Male15-16Empire KC Swim ClubMV · CENTRAL
SeasonUSA Swimming season runs Sept – Aug
Event
2020–21
2021–22
2022–23
2023–24
2024–25
2025–26
50 Free LCM
35.68
33.63
▲ 2.05
31.34
▲ 2.29
29.27
▲ 2.07
27.71
▲ 1.56
28.04
▼ 0.33
100 Free LCM
1:20.37
—
1:09.27
▲ 11.10
1:03.06
▲ 6.21
58.85
▲ 4.21
59.54
▼ 0.69
200 Free LCM
2:54.39
2:45.16
▲ 9.23
2:25.52
▲ 19.64
2:18.07
▲ 7.45
2:10.83
▲ 7.24
2:12.99
▼ 2.16
400 Free LCM
5:58.07
5:30.27
▲ 27.80
5:05.45
▲ 24.82
4:49.70
▲ 15.75
4:37.87
▲ 11.83
4:42.35
▼ 4.48
800 Free LCM
—
—
—
10:01.89
9:45.94
▲ 15.95
9:55.95
▼ 10.01
1500 Free LCM
—
—
—
19:08.94
18:48.16
▲ 20.78
—
50 Back LCM
43.58
—
39.16
▲ 4.42
—
34.67
▲ 4.49
—
100 Back LCM
1:33.11
1:24.53
▲ 8.58
1:22.91
▲ 1.62
1:16.47
▲ 6.44
1:13.60
▲ 2.87
—
200 Back LCM
—
3:00.80
2:53.27
▲ 7.53
—
2:36.57
▲ 16.70
—
50 Breast LCM
45.46
43.86
▲ 1.60
38.11
▲ 5.75
—
34.51
▲ 3.60
—
100 Breast LCM
1:39.66
1:34.48
▲ 5.18
1:23.05
▲ 11.43
1:18.98
▲ 4.07
1:14.90
▲ 4.08
1:17.62
▼ 2.72
200 Breast LCM
—
3:18.71
3:01.06
▲ 17.65
2:52.03
▲ 9.03
2:42.38
▲ 9.65
2:41.60
▲ 0.78
50 Fly LCM
45.68
—
35.62
▲ 10.06
—
31.15
▲ 4.47
—
100 Fly LCM
1:36.01
1:30.93
▲ 5.08
1:17.67
▲ 13.26
1:11.13
▲ 6.54
1:09.01
▲ 2.12
1:08.77
▲ 0.24
200 Fly LCM
—
—
2:54.52
2:38.43
▲ 16.09
2:42.36
▼ 3.93
2:34.68
▲ 7.68
200 IM LCM
3:15.14
2:55.59
▲ 19.55
2:41.13
▲ 14.46
2:32.28
▲ 8.85
2:29.18
▲ 3.10
2:28.42
▲ 0.76
400 IM LCM
—
—
—
5:23.92
5:23.59
▲ 0.33
5:15.51
▲ 8.08
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.