Swimmer profile
Mark Zhou
Male11-12Xtreme Swim ClubNE · EASTERN
SeasonUSA Swimming season runs Sept – Aug
Event
2022–23
2023–24
2024–25
2025–26
50 Free LCM
52.26
39.70
▲ 12.56
34.98
▲ 4.72
33.45
▲ 1.53
100 Free LCM
2:00.69
1:27.10
▲ 33.59
1:14.58
▲ 12.52
1:11.95
▲ 2.63
200 Free LCM
4:14.56
3:08.35
▲ 66.21
2:42.85
▲ 25.50
2:42.68
▲ 0.17
400 Free LCM
—
6:39.39
5:46.99
▲ 52.40
5:31.41
▲ 15.58
50 Back LCM
1:13.49
48.73
▲ 24.76
45.14
▲ 3.59
—
100 Back LCM
2:23.35
1:42.82
▲ 40.53
1:35.18
▲ 7.64
—
50 Breast LCM
1:02.70
45.93
▲ 16.77
43.07
▲ 2.86
41.73
▲ 1.34
100 Breast LCM
2:16.88
1:42.03
▲ 34.85
1:34.12
▲ 7.91
1:31.50
▲ 2.62
200 Breast LCM
—
3:54.91
—
3:20.40
▲ 34.51
50 Fly LCM
1:04.19
47.66
▲ 16.53
40.70
▲ 6.96
39.76
▲ 0.94
100 Fly LCM
—
1:39.10
1:36.54
▲ 2.56
1:30.76
▲ 5.78
200 IM LCM
—
3:27.15
3:04.60
▲ 22.55
3:03.98
▲ 0.62
400 IM LCM
—
—
—
6:26.74
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.