Swimmer profile
Mark Zhou
Male11-12Xtreme Swim ClubNE · EASTERN
SeasonUSA Swimming season runs Sept – Aug
Event
2023–24
2024–25
2025–26
50 Free SCY
37.90
32.11
▲ 5.79
29.65
▲ 2.46
100 Free SCY
1:26.08
1:09.04
▲ 17.04
1:03.18
▲ 5.86
200 Free SCY
2:56.90
2:33.30
▲ 23.60
2:15.72
▲ 17.58
500 Free SCY
7:26.74
6:38.67
▲ 48.07
6:04.46
▲ 34.21
1000 Free SCY
—
—
12:18.42
1650 Free SCY
—
—
20:42.85
50 Back SCY
46.82
40.54
▲ 6.28
38.24
▲ 2.30
100 Back SCY
1:34.66
1:26.78
▲ 7.88
—
50 Breast SCY
44.74
39.91
▲ 4.83
37.15
▲ 2.76
100 Breast SCY
1:37.04
1:24.63
▲ 12.41
1:19.43
▲ 5.20
200 Breast SCY
—
3:03.83
2:51.26
▲ 12.57
50 Fly SCY
41.84
35.91
▲ 5.93
34.83
▲ 1.08
100 Fly SCY
1:36.22
1:20.73
▲ 15.49
1:18.96
▲ 1.77
100 IM SCY
1:28.08
1:18.55
▲ 9.53
1:16.11
▲ 2.44
200 IM SCY
3:12.74
2:49.30
▲ 23.44
2:37.71
▲ 11.59
400 IM SCY
—
—
5:40.01
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.