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Mackenzie O'Brien

Age: 15 years old
Age Category: 15-16
Team: Mid Michigan Aquatics Hurrican | Michigan Swimming

Personal Best

Short course distance

Event Time Age Date Standard Next Standard Mid Michigan Aquatics Hurrican Michigan Swimming Central Zone USA
Free 50 Y 24.08 15 02/28/2026 AAA AAAA: 23.89 (+0.19s | 0.8%) 1 9 56 246
Free 100 Y 53.02 Analysis 15 02/07/2026 AAA AAAA: 51.59 (+1.43s | 2.7%) 1 19 63 421
50 Free
25.54
25.54
100 Free
27.48
53.02
100 Free
53.02
Free 200 Y 1:58.70 Analysis 15 02/07/2026 AA AAA: 1:57.09 (+1.61s | 1.4%) 1 47 141 1,000+
50 Free
27.97
27.97
100 Free
29.90
57.87
100 Free
57.87
150 Free
30.25
1:28.12
200 Free
30.58
1:58.70
100 Free
1:00.83
Free 500 Y 5:31.01 Analysis 15 02/07/2026 A AA: 5:29.39 (+1.62s | 0.5%) 1 56 217 1,000+
50 Free
28.81
28.81
100 Free
32.27
1:01.08
100 Free
1:01.08
150 Free
32.87
1:33.95
200 Free
33.58
2:07.53
100 Free
1:06.45
250 Free
33.52
2:41.05
300 Free
34.13
3:15.18
100 Free
1:07.65
350 Free
34.08
3:49.26
400 Free
34.33
4:23.59
100 Free
1:08.41
450 Free
34.27
4:57.86
500 Free
33.15
5:31.01
100 Free
1:07.42
Back 50 Y 27.37 15 02/28/2026 1 12 55 260
Back 100 Y 59.13 Analysis 15 02/07/2026 AA AAA: 58.69 (+0.44s | 0.7%) 2 23 76 518
50 Back
28.65
28.65
100 Back
30.48
59.13
100 Back
59.13
Back 200 Y 2:11.14 Analysis 15 02/28/2026 AA AAA: 2:07.49 (+3.65s | 2.8%) 2 26 100 706
50 Back
30.18
30.18
100 Back
32.40
1:02.58
100 Back
1:02.58
150 Back
34.30
1:36.88
200 Back
34.26
2:11.14
100 Back
1:08.56
Breast 50 Y 31.49 15 02/28/2026 1 4 37 273
Breast 100 Y 1:10.88 Analysis 15 02/07/2026 A AA: 1:10.59 (+0.29s | 0.4%) 1 35 160 1,000+
50 Breast
32.96
32.96
100 Breast
37.92
1:10.88
100 Breast
1:10.88
Breast 200 Y 2:35.54 Analysis 15 02/07/2026 A AA: 2:32.79 (+2.75s | 1.8%) 1 31 141 1,000+
50 Breast
34.89
34.89
100 Breast
40.02
1:14.91
100 Breast
1:14.91
150 Breast
40.48
1:55.39
200 Breast
40.15
2:35.54
100 Breast
1:20.63
Fly 50 Y 25.98 15 02/28/2026 1 5 19 122
Fly 100 Y 58.43 Analysis 15 02/07/2026 AA AAA: 58.39 (+0.04s | 0.1%) 1 17 57 450
50 Fly
27.20
27.20
100 Fly
31.23
58.43
100 Fly
58.43
Fly 200 Y 2:17.22 Analysis 15 03/07/2026 A AA: 2:16.19 (+1.03s | 0.8%) 1 28 88 808
50 Fly
28.32
28.32
100 Fly
33.96
1:02.28
100 Fly
1:02.28
150 Fly
36.59
1:38.87
200 Fly
38.35
2:17.22
100 Fly
1:14.94
IM 200 Y 2:12.68 Analysis 15 02/28/2026 AA AAA: 2:10.59 (+2.09s | 1.6%) 1 29 90 759
50 Fly
27.63
27.63
100 Back
32.31
59.94
100 IM
59.94
150 Breast
40.65
1:40.59
200 Free
32.09
2:12.68
100 IM
1:12.74
IM 400 Y 4:53.79 Analysis 15 12/05/2025 A AA: 4:51.59 (+2.20s | 0.7%) 2 30 133 1,000+
50 Fly
29.51
29.51
100 Fly
34.59
1:04.10
100 Fly
1:04.10
150 Back
36.39
1:40.49
200 Back
36.41
2:16.90
100 Back
1:12.80
250 Breast
42.70
2:59.60
300 Breast
44.09
3:43.69
100 Breast
1:26.79
350 Free
35.56
4:19.25
400 Free
34.54
4:53.79
100 Free
1:10.10

Long course distance

Event Time Age Date Standard Next Standard Mid Michigan Aquatics Hurrican Michigan Swimming Central Zone USA

Above are the fastest times that Mackenzie O'Brien has achieved in her swimming career. For each event, you can find Mackenzie's best time, the corresponding time standard, as well as how much faster Mackenzie needs to be to reach the next level. The last columns provide Mackenzie rankings at the team and LSC levels. These rankings are based on the Mackenzie's personal best, her current age category, and team; and are calculated from all the meets results.

Disclaimer: This Website is not affiliated with USA Swimming or any Local Swim Committee. The rankings and times displayed on this website are unofficial and should not be viewed as such. We update our information regularly, but we cannot guarantee that the data is accurate, timely, or complete. The only purpose of this website is entertainment. None of the information here should be used for university admission applications.