Swimmer profile
Makenzie O'Brien
FemaleOpen / SeniorAnnapolis Swim ClubMD · EASTERN
SeasonUSA Swimming season runs Sept – Aug
Event
2014–15
2015–16
2016–17
2017–18
2018–19
2019–20
2020–21
2021–22
2022–23
2023–24
2024–25
2025–26
50 Free SCY
44.77
42.25
▲ 2.52
36.06
▲ 6.19
30.99
▲ 5.07
29.46
▲ 1.53
28.77
▲ 0.69
28.33
▲ 0.44
27.71
▲ 0.62
26.96
▲ 0.75
27.39
▼ 0.43
27.07
▲ 0.32
—
100 Free SCY
—
1:37.16
1:29.37
▲ 7.79
1:09.74
▲ 19.63
1:05.21
▲ 4.53
1:02.36
▲ 2.85
1:00.24
▲ 2.12
59.82
▲ 0.42
59.40
▲ 0.42
59.92
▼ 0.52
59.62
▲ 0.30
—
200 Free SCY
—
—
2:58.78
2:39.90
▲ 18.88
2:18.19
▲ 21.71
2:12.51
▲ 5.68
2:11.96
▲ 0.55
2:12.34
▼ 0.38
2:03.39
▲ 8.95
2:07.87
▼ 4.48
2:08.53
▼ 0.66
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500 Free SCY
—
—
—
7:04.05
6:04.79
▲ 59.26
5:49.07
▲ 15.72
5:52.46
▼ 3.39
5:31.79
▲ 20.67
5:26.73
▲ 5.06
5:33.56
▼ 6.83
5:36.49
▼ 2.93
5:16.78
▲ 19.71
1000 Free SCY
—
—
—
—
—
—
12:10.98
—
11:18.82
▲ 52.16
11:21.45
▼ 2.63
—
11:06.75
▲ 14.70
1650 Free SCY
—
—
—
—
—
20:32.08
20:12.14
▲ 19.94
—
19:40.89
▲ 31.25
—
19:32.53
▲ 8.36
18:21.29
▲ 71.24
50 Back SCY
52.52
45.25
▲ 7.27
40.29
▲ 4.96
36.77
▲ 3.52
33.21
▲ 3.56
32.39
▲ 0.82
—
—
30.78
▲ 1.61
—
—
—
100 Back SCY
—
—
1:30.87
1:18.83
▲ 12.04
1:10.29
▲ 8.54
1:09.49
▲ 0.80
1:06.08
▲ 3.41
1:06.40
▼ 0.32
1:04.83
▲ 1.57
1:03.81
▲ 1.02
1:04.62
▼ 0.81
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200 Back SCY
—
—
—
2:44.84
2:25.27
▲ 19.57
2:23.96
▲ 1.31
2:22.69
▲ 1.27
2:21.06
▲ 1.63
2:15.76
▲ 5.30
2:12.30
▲ 3.46
2:17.70
▼ 5.40
2:23.56
▼ 5.86
50 Breast SCY
—
50.03
46.84
▲ 3.19
39.04
▲ 7.80
36.92
▲ 2.12
35.10
▲ 1.82
—
35.03
▲ 0.07
—
—
—
—
100 Breast SCY
—
1:46.36
1:41.80
▲ 4.56
1:27.80
▲ 14.00
1:18.72
▲ 9.08
1:14.18
▲ 4.54
1:13.94
▲ 0.24
1:12.03
▲ 1.91
1:10.30
▲ 1.73
1:11.27
▼ 0.97
1:10.95
▲ 0.32
—
200 Breast SCY
—
—
—
3:09.94
2:53.70
▲ 16.24
2:38.39
▲ 15.31
2:37.30
▲ 1.09
2:37.59
▼ 0.29
2:29.41
▲ 8.18
2:32.06
▼ 2.65
2:30.63
▲ 1.43
2:33.01
▼ 2.38
50 Fly SCY
—
43.04
40.82
▲ 2.22
34.30
▲ 6.52
32.84
▲ 1.46
32.59
▲ 0.25
—
—
—
—
—
—
100 Fly SCY
—
—
—
1:24.44
1:14.46
▲ 9.98
1:11.80
▲ 2.66
1:09.96
▲ 1.84
1:08.91
▲ 1.05
1:04.22
▲ 4.69
1:04.30
▼ 0.08
—
1:09.10
▼ 4.80
200 Fly SCY
—
—
—
—
2:44.08
2:39.37
▲ 4.71
—
2:33.06
▲ 6.31
2:30.00
▲ 3.06
—
—
—
100 IM SCY
—
1:36.32
1:29.51
▲ 6.81
1:17.77
▲ 11.74
1:11.73
▲ 6.04
1:10.96
▲ 0.77
1:09.47
▲ 1.49
1:06.09
▲ 3.38
—
—
—
—
200 IM SCY
—
—
3:12.77
2:43.07
▲ 29.70
2:31.18
▲ 11.89
2:26.69
▲ 4.49
2:22.30
▲ 4.39
2:21.40
▲ 0.90
2:15.08
▲ 6.32
2:15.38
▼ 0.30
2:19.49
▼ 4.11
2:16.82
▲ 2.67
400 IM SCY
—
—
—
5:39.59
5:09.66
▲ 29.93
5:07.56
▲ 2.10
4:57.37
▲ 10.19
4:58.72
▼ 1.35
4:45.51
▲ 13.21
4:47.08
▼ 1.57
—
4:43.12
▲ 3.96
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.