Swimmer profile
Mason Nyboer
MaleOpen / SeniorTucson Ford Dealers AquaticsAZ · WESTERNCollege athlete · University of ArizonaD1
SeasonUSA Swimming season runs Sept – Aug
Event
2008–09
2009–10
2010–11
2011–12
2012–13
2013–14
2014–15
2015–16
2016–17
2017–18
2018–19
2019–20
2021–22
2022–23
2023–24
2024–25
50 Free LCM
48.28
41.53
▲ 6.75
37.27
▲ 4.26
34.48
▲ 2.79
33.75
▲ 0.73
31.23
▲ 2.52
28.54
▲ 2.69
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26.54
▲ 2.00
26.21
▲ 0.33
—
25.76
▲ 0.45
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—
—
100 Free LCM
1:53.78
1:34.69
▲ 19.09
1:18.66
▲ 16.03
1:16.28
▲ 2.38
1:10.92
▲ 5.36
1:05.17
▲ 5.75
1:01.23
▲ 3.94
59.12
▲ 2.11
58.48
▲ 0.64
55.72
▲ 2.76
55.26
▲ 0.46
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54.35
▲ 0.91
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200 Free LCM
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3:24.12
2:49.48
▲ 34.64
2:38.02
▲ 11.46
2:32.50
▲ 5.52
2:14.34
▲ 18.16
2:04.90
▲ 9.44
2:01.67
▲ 3.23
1:57.11
▲ 4.56
1:57.22
▼ 0.11
1:56.35
▲ 0.87
—
1:56.43
▼ 0.08
1:54.90
▲ 1.53
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400 Free LCM
—
—
—
5:45.04
5:09.88
▲ 35.16
4:39.23
▲ 30.65
4:23.27
▲ 15.96
4:12.52
▲ 10.75
4:07.14
▲ 5.38
4:02.34
▲ 4.80
4:00.40
▲ 1.94
4:07.25
▼ 6.85
4:03.47
▲ 3.78
3:58.54
▲ 4.93
4:01.89
▼ 3.35
3:58.07
▲ 3.82
800 Free LCM
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—
—
—
9:27.72
—
—
—
8:17.74
▲ 69.98
8:16.36
▲ 1.38
8:30.77
▼ 14.41
8:24.52
▲ 6.25
8:13.37
▲ 11.15
8:14.46
▼ 1.09
8:12.11
▲ 2.35
1500 Free LCM
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—
—
—
—
18:10.86
17:14.91
▲ 55.95
16:33.41
▲ 41.50
16:04.16
▲ 29.25
15:53.63
▲ 10.53
15:50.28
▲ 3.35
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16:06.43
▼ 16.15
15:45.30
▲ 21.13
15:45.91
▼ 0.61
15:38.59
▲ 7.32
50 Back LCM
1:00.13
46.40
▲ 13.73
42.49
▲ 3.91
41.44
▲ 1.05
39.75
▲ 1.69
—
32.95
▲ 6.80
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—
—
—
—
—
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100 Back LCM
2:17.08
1:46.57
▲ 30.51
1:31.74
▲ 14.83
1:27.80
▲ 3.94
1:21.81
▲ 5.99
1:19.09
▲ 2.72
1:13.09
▲ 6.00
1:09.24
▲ 3.85
1:07.26
▲ 1.98
1:05.73
▲ 1.53
1:05.29
▲ 0.44
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—
—
—
200 Back LCM
—
—
—
—
—
2:32.80
2:30.47
▲ 2.33
—
2:18.47
▲ 12.00
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—
—
—
—
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50 Breast LCM
1:03.10
58.26
▲ 4.84
50.71
▲ 7.55
51.03
▼ 0.32
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—
—
—
—
—
—
—
—
—
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100 Breast LCM
2:25.69
1:56.81
▲ 28.88
1:49.88
▲ 6.93
1:48.38
▲ 1.50
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—
—
1:27.77
▲ 20.61
—
—
1:19.43
▲ 8.34
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—
—
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50 Fly LCM
1:09.90
1:03.58
▲ 6.32
48.02
▲ 15.56
40.87
▲ 7.15
36.78
▲ 4.09
33.50
▲ 3.28
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—
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—
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100 Fly LCM
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2:31.54
1:50.03
▲ 41.51
—
1:25.90
▲ 24.13
1:14.09
▲ 11.81
1:05.97
▲ 8.12
1:06.71
▼ 0.74
1:09.76
▼ 3.05
1:03.93
▲ 5.83
1:03.28
▲ 0.65
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200 Fly LCM
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—
—
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2:37.25
2:26.02
▲ 11.23
2:21.02
▲ 5.00
2:21.57
▼ 0.55
2:22.21
▼ 0.64
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2:10.58
▲ 11.63
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200 IM LCM
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3:52.11
3:15.34
▲ 36.77
3:01.67
▲ 13.67
2:58.89
▲ 2.78
—
2:28.43
▲ 30.46
2:29.56
▼ 1.13
—
2:24.03
▲ 5.53
2:20.71
▲ 3.32
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400 IM LCM
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—
—
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5:07.95
5:07.01
▲ 0.94
4:55.86
▲ 11.15
4:59.30
▼ 3.44
4:46.96
▲ 12.34
—
4:58.03
▼ 11.07
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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.