Swimmer profile
Mason Nishimura
Male15-16Kamehameha Swim ClubHI · WESTERN
SeasonUSA Swimming season runs Sept – Aug
Event
2019–20
2020–21
2021–22
2022–23
2023–24
2024–25
2025–26
50 Free LCM
1:23.14
46.35
▲ 36.79
33.86
▲ 12.49
30.30
▲ 3.56
29.16
▲ 1.14
27.54
▲ 1.62
27.34
▲ 0.20
100 Free LCM
—
—
1:19.02
1:07.85
▲ 11.17
1:05.05
▲ 2.80
1:01.72
▲ 3.33
1:01.30
▲ 0.42
200 Free LCM
—
—
2:58.87
2:28.70
▲ 30.17
2:30.20
▼ 1.50
2:22.91
▲ 7.29
2:19.02
▲ 3.89
400 Free LCM
—
—
6:12.03
5:24.01
▲ 48.02
5:24.87
▼ 0.86
—
5:09.35
▲ 15.52
800 Free LCM
—
—
—
—
11:29.89
—
—
50 Back LCM
1:27.24
56.87
▲ 30.37
46.43
▲ 10.44
40.11
▲ 6.32
—
35.89
▲ 4.22
—
100 Back LCM
—
—
—
1:30.33
1:24.51
▲ 5.82
1:17.67
▲ 6.84
—
200 Back LCM
—
—
3:35.54
—
3:02.47
▲ 33.07
2:50.32
▲ 12.15
2:46.83
▲ 3.49
50 Breast LCM
1:38.31
1:06.78
▲ 31.53
55.96
▲ 10.82
45.94
▲ 10.02
—
—
—
100 Breast LCM
—
—
1:59.49
1:42.26
▲ 17.23
1:38.65
▲ 3.61
1:33.49
▲ 5.16
1:30.24
▲ 3.25
200 Breast LCM
—
—
—
—
3:35.50
—
3:11.87
▲ 23.63
50 Fly LCM
—
—
42.83
33.87
▲ 8.96
—
29.92
▲ 3.95
30.21
▼ 0.29
100 Fly LCM
—
—
1:43.06
1:21.27
▲ 21.79
1:16.27
▲ 5.00
1:09.24
▲ 7.03
1:06.86
▲ 2.38
200 Fly LCM
—
—
3:42.77
3:14.29
▲ 28.48
2:58.84
▲ 15.45
2:48.69
▲ 10.15
2:41.21
▲ 7.48
200 IM LCM
—
—
3:25.73
2:57.94
▲ 27.79
2:57.42
▲ 0.52
2:45.48
▲ 11.94
2:38.02
▲ 7.46
400 IM LCM
—
—
—
6:35.54
—
6:06.76
▲ 28.78
5:40.76
▲ 26.00
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.