Swimmer profile
Preston Marks
Male15-16Terrapins Swim TeamPC · WESTERN
SeasonUSA Swimming season runs Sept – Aug
Event
2021–22
2022–23
2023–24
2024–25
2025–26
50 Free LCM
30.49
29.64
▲ 0.85
28.94
▲ 0.70
28.58
▲ 0.36
27.05
▲ 1.53
100 Free LCM
1:06.87
1:06.46
▲ 0.41
1:03.35
▲ 3.11
1:02.50
▲ 0.85
59.81
▲ 2.69
200 Free LCM
2:25.08
2:24.19
▲ 0.89
2:18.45
▲ 5.74
2:16.97
▲ 1.48
2:14.99
▲ 1.98
400 Free LCM
5:18.13
5:08.94
▲ 9.19
4:59.20
▲ 9.74
—
4:47.64
▲ 11.56
800 Free LCM
10:50.48
10:51.15
▼ 0.67
—
—
—
1500 Free LCM
—
20:28.27
—
—
—
50 Back LCM
35.78
35.46
▲ 0.32
—
—
31.93
▲ 3.53
100 Back LCM
1:17.76
1:17.10
▲ 0.66
1:12.86
▲ 4.24
1:11.11
▲ 1.75
1:09.21
▲ 1.90
200 Back LCM
2:48.91
2:48.17
▲ 0.74
2:35.60
▲ 12.57
2:35.00
▲ 0.60
2:26.98
▲ 8.02
50 Breast LCM
40.13
—
—
36.59
▲ 3.54
35.43
▲ 1.16
100 Breast LCM
1:27.14
1:24.73
▲ 2.41
1:23.82
▲ 0.91
1:20.04
▲ 3.78
—
200 Breast LCM
—
3:16.55
3:02.73
▲ 13.82
—
—
50 Fly LCM
34.62
33.92
▲ 0.70
—
—
—
100 Fly LCM
1:20.63
1:16.42
▲ 4.21
1:16.86
▼ 0.44
—
—
200 IM LCM
2:42.72
2:46.05
▼ 3.33
2:41.67
▲ 4.38
2:36.38
▲ 5.29
—
400 IM LCM
5:55.32
5:50.24
▲ 5.08
5:42.29
▲ 7.95
5:34.42
▲ 7.87
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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.