Swimmer profile
Serena Zhao
Female15-16Houston Bridge BatsGU · 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
51.25
36.23
▲ 15.02
31.66
▲ 4.57
30.46
▲ 1.20
30.34
▲ 0.12
30.03
▲ 0.31
30.16
▼ 0.13
31.40
▼ 1.24
100 Free LCM
—
1:23.36
1:08.32
▲ 15.04
1:06.23
▲ 2.09
1:06.11
▲ 0.12
1:07.11
▼ 1.00
1:07.55
▼ 0.44
1:09.34
▼ 1.79
200 Free LCM
—
3:05.00
2:31.45
▲ 33.55
2:23.90
▲ 7.55
2:24.96
▼ 1.06
2:27.24
▼ 2.28
2:29.73
▼ 2.49
—
400 Free LCM
—
—
5:09.56
4:53.74
▲ 15.82
5:09.40
▼ 15.66
5:23.84
▼ 14.44
—
—
800 Free LCM
—
—
—
—
10:48.77
—
—
—
50 Back LCM
1:04.45
46.00
▲ 18.45
38.93
▲ 7.07
36.80
▲ 2.13
34.40
▲ 2.40
35.40
▼ 1.00
36.33
▼ 0.93
—
100 Back LCM
—
1:37.98
1:20.51
▲ 17.47
1:18.04
▲ 2.47
1:14.50
▲ 3.54
1:14.60
▼ 0.10
1:15.74
▼ 1.14
1:16.01
▼ 0.27
200 Back LCM
—
—
—
2:43.18
2:41.12
▲ 2.06
2:40.94
▲ 0.18
2:43.44
▼ 2.50
2:47.35
▼ 3.91
50 Breast LCM
58.10
48.78
▲ 9.32
39.02
▲ 9.76
39.67
▼ 0.65
41.45
▼ 1.78
—
41.26
▲ 0.19
41.49
▼ 0.23
100 Breast LCM
—
1:45.00
1:24.15
▲ 20.85
1:25.17
▼ 1.02
1:29.97
▼ 4.80
1:32.35
▼ 2.38
1:28.61
▲ 3.74
—
200 Breast LCM
—
—
3:04.85
3:09.39
▼ 4.54
3:16.23
▼ 6.84
—
—
—
50 Fly LCM
1:03.04
45.83
▲ 17.21
33.60
▲ 12.23
35.34
▼ 1.74
35.59
▼ 0.25
—
33.74
▲ 1.85
33.51
▲ 0.23
100 Fly LCM
—
1:49.57
1:16.97
▲ 32.60
1:15.70
▲ 1.27
1:17.33
▼ 1.63
1:16.79
▲ 0.54
1:15.91
▲ 0.88
1:19.61
▼ 3.70
200 Fly LCM
—
—
—
—
3:00.39
—
—
—
200 IM LCM
—
3:30.24
2:44.62
▲ 45.62
2:41.87
▲ 2.75
2:44.69
▼ 2.82
2:44.59
▲ 0.10
2:45.33
▼ 0.74
2:50.75
▼ 5.42
400 IM LCM
—
—
5:53.96
—
5:55.50
▼ 1.54
—
5:59.16
▼ 3.66
—
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.