Swimmer profile
Marina Zhao
Female13-14FASTAZ · WESTERN
SeasonUSA Swimming season runs Sept – Aug
Event
2018–19
2019–20
2020–21
2021–22
2022–23
2023–24
2024–25
2025–26
50 Free SCY
55.06
37.79
▲ 17.27
34.63
▲ 3.16
31.57
▲ 3.06
29.27
▲ 2.30
28.10
▲ 1.17
26.38
▲ 1.72
25.84
▲ 0.54
100 Free SCY
2:00.55
1:28.45
▲ 32.10
1:23.05
▲ 5.40
1:10.62
▲ 12.43
1:05.60
▲ 5.02
59.21
▲ 6.39
56.54
▲ 2.67
53.68
▲ 2.86
200 Free SCY
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—
—
2:37.07
2:23.90
▲ 13.17
2:03.30
▲ 20.60
1:59.77
▲ 3.53
1:54.91
▲ 4.86
500 Free SCY
—
—
—
—
—
5:33.51
5:16.64
▲ 16.87
5:07.42
▲ 9.22
1000 Free SCY
—
—
—
—
—
—
11:01.72
10:51.76
▲ 9.96
50 Back SCY
56.09
46.17
▲ 9.92
41.21
▲ 4.96
39.00
▲ 2.21
36.33
▲ 2.67
32.38
▲ 3.95
31.23
▲ 1.15
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100 Back SCY
2:19.01
1:43.63
▲ 35.38
1:28.41
▲ 15.22
1:24.24
▲ 4.17
1:19.84
▲ 4.40
1:13.46
▲ 6.38
1:06.25
▲ 7.21
1:04.21
▲ 2.04
200 Back SCY
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—
—
—
—
2:37.41
2:26.35
▲ 11.06
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50 Breast SCY
1:11.20
56.09
▲ 15.11
50.61
▲ 5.48
52.25
▼ 1.64
42.06
▲ 10.19
39.10
▲ 2.96
36.32
▲ 2.78
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100 Breast SCY
—
1:57.08
—
—
1:35.12
▲ 21.96
1:23.51
▲ 11.61
1:17.60
▲ 5.91
1:12.99
▲ 4.61
200 Breast SCY
—
—
—
—
—
3:03.05
2:47.09
▲ 15.96
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50 Fly SCY
—
44.84
42.73
▲ 2.11
35.79
▲ 6.94
32.11
▲ 3.68
28.99
▲ 3.12
27.23
▲ 1.76
26.75
▲ 0.48
100 Fly SCY
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—
—
1:21.60
1:13.05
▲ 8.55
1:03.51
▲ 9.54
1:00.10
▲ 3.41
58.60
▲ 1.50
200 Fly SCY
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—
—
—
—
2:30.27
2:08.87
▲ 21.40
2:04.83
▲ 4.04
100 IM SCY
2:13.96
1:43.13
▲ 30.83
1:34.50
▲ 8.63
1:27.51
▲ 6.99
1:17.84
▲ 9.67
1:07.93
▲ 9.91
1:06.27
▲ 1.66
1:03.08
▲ 3.19
200 IM SCY
—
3:51.81
—
—
2:43.13
▲ 68.68
2:25.68
▲ 17.45
2:20.88
▲ 4.80
2:13.85
▲ 7.03
400 IM SCY
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—
—
—
—
5:19.38
4:52.43
▲ 26.95
4:44.20
▲ 8.23
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.