Swimmer profile
Mason Thomas
Male15-16Sienna Premier AquaticsGU · SOUTHERN
SeasonUSA Swimming season runs Sept – Aug
Event
2018–19
2020–21
2021–22
2022–23
2023–24
2024–25
2025–26
50 Free LCM
44.46
42.03
▲ 2.43
33.65
▲ 8.38
30.81
▲ 2.84
29.53
▲ 1.28
28.01
▲ 1.52
27.42
▲ 0.59
100 Free LCM
1:50.43
1:33.57
▲ 16.86
1:13.52
▲ 20.05
1:10.01
▲ 3.51
1:03.49
▲ 6.52
1:02.07
▲ 1.42
1:01.25
▲ 0.82
200 Free LCM
—
3:33.74
2:54.40
▲ 39.34
2:40.40
▲ 14.00
2:28.61
▲ 11.79
2:25.39
▲ 3.22
2:24.47
▲ 0.92
400 Free LCM
—
7:19.94
6:13.65
▲ 66.29
5:41.15
▲ 32.50
5:22.31
▲ 18.84
5:26.80
▼ 4.49
5:28.96
▼ 2.16
800 Free LCM
—
—
13:25.36
12:23.52
▲ 61.84
—
—
—
1500 Free LCM
—
—
26:12.20
—
—
—
—
50 Back LCM
51.25
42.03
▲ 9.22
43.19
▼ 1.16
—
—
—
34.88
▲ 8.31
100 Back LCM
1:58.02
1:49.83
▲ 8.19
1:33.26
▲ 16.57
1:30.03
▲ 3.23
—
—
—
200 Back LCM
—
3:35.19
—
3:05.14
▲ 30.05
—
—
—
50 Breast LCM
1:09.37
53.76
▲ 15.61
46.74
▲ 7.02
—
—
33.43
▲ 13.31
33.68
▼ 0.25
100 Breast LCM
2:39.59
2:02.71
▲ 36.88
1:52.03
▲ 10.68
1:35.72
▲ 16.31
1:16.59
▲ 19.13
1:17.82
▼ 1.23
1:18.64
▼ 0.82
200 Breast LCM
—
4:21.89
—
3:30.55
▲ 51.34
2:56.12
▲ 34.43
2:56.85
▼ 0.73
3:09.03
▼ 12.18
50 Fly LCM
—
52.45
38.22
▲ 14.23
—
—
—
29.38
▲ 8.84
100 Fly LCM
—
—
1:27.36
1:24.84
▲ 2.52
—
—
1:10.57
▲ 14.27
200 IM LCM
—
3:52.21
3:08.82
▲ 43.39
3:03.13
▲ 5.69
2:38.78
▲ 24.35
2:38.09
▲ 0.69
2:39.39
▼ 1.30
400 IM LCM
—
—
—
—
5:45.28
5:49.23
▼ 3.95
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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.