Swimmer profile
Marina Zhao
Female13-14FASTAZ · WESTERN
SeasonUSA Swimming season runs Sept – Aug
Event
2018–19
2020–21
2021–22
2022–23
2023–24
2024–25
2025–26
50 Free LCM
54.87
37.06
▲ 17.81
35.22
▲ 1.84
33.53
▲ 1.69
30.83
▲ 2.70
30.07
▲ 0.76
29.20
▲ 0.87
100 Free LCM
2:03.35
1:21.93
▲ 41.42
1:18.69
▲ 3.24
1:11.17
▲ 7.52
1:05.90
▲ 5.27
1:03.87
▲ 2.03
1:02.30
▲ 1.57
200 Free LCM
4:27.87
—
3:02.10
▲ 85.77
2:39.39
▲ 22.71
2:20.81
▲ 18.58
2:13.16
▲ 7.65
2:12.35
▲ 0.81
400 Free LCM
—
—
—
—
4:56.45
4:38.20
▲ 18.25
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800 Free LCM
—
—
—
—
—
—
9:33.51
1500 Free LCM
—
—
—
—
—
—
18:14.56
50 Back LCM
—
43.97
43.40
▲ 0.57
40.33
▲ 3.07
36.41
▲ 3.92
35.32
▲ 1.09
—
100 Back LCM
—
1:40.80
—
1:27.87
▲ 12.93
1:22.98
▲ 4.89
1:17.00
▲ 5.98
—
200 Back LCM
—
—
—
—
2:51.05
—
—
50 Breast LCM
1:11.42
55.73
▲ 15.69
51.41
▲ 4.32
46.85
▲ 4.56
42.26
▲ 4.59
40.62
▲ 1.64
—
100 Breast LCM
2:39.64
1:59.67
▲ 39.97
—
1:41.10
▲ 18.57
1:34.35
▲ 6.75
1:29.36
▲ 4.99
—
200 Breast LCM
—
—
—
—
3:17.11
3:06.86
▲ 10.25
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50 Fly LCM
1:18.73
43.42
▲ 35.31
38.43
▲ 4.99
35.17
▲ 3.26
32.21
▲ 2.96
30.68
▲ 1.53
30.42
▲ 0.26
100 Fly LCM
—
—
1:29.01
1:20.55
▲ 8.46
1:12.25
▲ 8.30
1:05.69
▲ 6.56
1:07.79
▼ 2.10
200 Fly LCM
—
—
—
—
2:41.21
2:21.59
▲ 19.62
2:23.71
▼ 2.12
200 IM LCM
5:11.32
3:37.87
▲ 93.45
3:19.64
▲ 18.23
3:03.14
▲ 16.50
2:44.92
▲ 18.22
2:33.55
▲ 11.37
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400 IM LCM
—
—
—
—
5:51.31
5:33.01
▲ 18.30
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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.