Swimmer profile
Preston Marks
Male15-16Terrapins Swim TeamPC · WESTERN
SeasonUSA Swimming season runs Sept – Aug
Event
2015–16
2016–17
2017–18
2018–19
2019–20
2021–22
2022–23
2023–24
2024–25
2025–26
50 Free SCY
52.07
39.95
▲ 12.12
36.15
▲ 3.80
33.45
▲ 2.70
30.93
▲ 2.52
27.83
▲ 3.10
27.15
▲ 0.68
25.83
▲ 1.32
25.46
▲ 0.37
23.69
▲ 1.77
100 Free SCY
—
1:35.24
1:22.27
▲ 12.97
1:13.24
▲ 9.03
1:10.79
▲ 2.45
1:00.38
▲ 10.41
58.93
▲ 1.45
56.98
▲ 1.95
54.83
▲ 2.15
53.42
▲ 1.41
200 Free SCY
—
—
—
—
2:38.03
2:11.92
▲ 26.11
2:09.07
▲ 2.85
2:01.27
▲ 7.80
1:59.38
▲ 1.89
1:54.81
▲ 4.57
500 Free SCY
—
—
—
—
—
5:49.03
5:47.84
▲ 1.19
5:28.16
▲ 19.68
5:28.95
▼ 0.79
5:15.60
▲ 13.35
1000 Free SCY
—
—
—
—
—
11:59.27
—
11:15.06
▲ 44.21
11:15.98
▼ 0.92
—
1650 Free SCY
—
—
—
—
—
21:33.66
20:33.74
▲ 59.92
18:44.61
▲ 109.13
—
—
50 Back SCY
1:09.65
48.42
▲ 21.23
43.64
▲ 4.78
36.77
▲ 6.87
34.69
▲ 2.08
31.19
▲ 3.50
31.24
▼ 0.05
—
—
27.99
▲ 3.25
100 Back SCY
—
—
—
—
1:14.69
1:09.31
▲ 5.38
1:07.60
▲ 1.71
1:04.13
▲ 3.47
1:00.96
▲ 3.17
58.87
▲ 2.09
200 Back SCY
—
—
—
—
—
2:27.11
2:24.20
▲ 2.91
2:15.51
▲ 8.69
2:11.42
▲ 4.09
2:08.25
▲ 3.17
50 Breast SCY
—
55.72
51.27
▲ 4.45
47.31
▲ 3.96
41.95
▲ 5.36
35.75
▲ 6.20
36.29
▼ 0.54
—
—
—
100 Breast SCY
—
—
—
—
1:32.69
1:18.92
▲ 13.77
1:18.49
▲ 0.43
1:12.60
▲ 5.89
1:09.95
▲ 2.65
1:06.46
▲ 3.49
200 Breast SCY
—
—
—
—
—
—
2:53.75
2:35.12
▲ 18.63
2:31.75
▲ 3.37
2:22.87
▲ 8.88
50 Fly SCY
—
50.07
43.71
▲ 6.36
39.75
▲ 3.96
35.83
▲ 3.92
31.65
▲ 4.18
30.39
▲ 1.26
—
—
—
100 Fly SCY
—
—
—
—
1:31.95
1:09.13
▲ 22.82
1:08.80
▲ 0.33
1:06.07
▲ 2.73
1:02.82
▲ 3.25
1:03.89
▼ 1.07
200 Fly SCY
—
—
—
—
—
—
2:37.11
—
—
—
100 IM SCY
—
1:47.02
1:33.55
▲ 13.47
1:27.83
▲ 5.72
1:19.48
▲ 8.35
1:08.15
▲ 11.33
1:07.80
▲ 0.35
—
1:02.35
▲ 5.45
—
200 IM SCY
—
—
—
—
—
2:28.02
2:25.46
▲ 2.56
2:17.26
▲ 8.20
2:14.23
▲ 3.03
2:08.37
▲ 5.86
400 IM SCY
—
—
—
—
—
5:08.78
5:18.62
▼ 9.84
5:16.54
▲ 2.08
—
4:53.55
▲ 22.99
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.