Swimmer profile
Mackenzie Marrero
Female11-12New Jersey Race ClubNJ · EASTERN
SeasonUSA Swimming season runs Sept – Aug
Event
2019–20
2020–21
2021–22
2022–23
2023–24
2024–25
2025–26
50 Free SCY
1:07.57
45.26
▲ 22.31
40.13
▲ 5.13
34.74
▲ 5.39
30.60
▲ 4.14
28.25
▲ 2.35
27.76
▲ 0.49
100 Free SCY
—
—
—
1:21.99
1:09.78
▲ 12.21
1:03.36
▲ 6.42
1:00.94
▲ 2.42
200 Free SCY
—
—
—
3:02.03
2:28.83
▲ 33.20
2:15.63
▲ 13.20
2:14.50
▲ 1.13
500 Free SCY
—
—
—
—
—
—
6:03.36
50 Back SCY
—
56.17
49.33
▲ 6.84
42.37
▲ 6.96
36.80
▲ 5.57
32.54
▲ 4.26
31.87
▲ 0.67
100 Back SCY
—
—
1:51.22
1:43.66
▲ 7.56
1:24.14
▲ 19.52
1:12.03
▲ 12.11
1:12.19
▼ 0.16
200 Back SCY
—
—
—
—
—
—
2:38.68
50 Breast SCY
—
—
52.44
43.20
▲ 9.24
37.56
▲ 5.64
35.17
▲ 2.39
34.74
▲ 0.43
100 Breast SCY
—
—
2:03.66
1:42.48
▲ 21.18
1:23.95
▲ 18.53
1:19.82
▲ 4.13
1:17.46
▲ 2.36
200 Breast SCY
—
—
—
—
3:06.43
—
2:56.95
▲ 9.48
50 Fly SCY
—
—
56.56
49.93
▲ 6.63
39.33
▲ 10.60
31.93
▲ 7.40
30.83
▲ 1.10
100 Fly SCY
—
—
—
—
—
1:30.32
—
100 IM SCY
—
—
1:43.59
1:33.78
▲ 9.81
1:16.56
▲ 17.22
1:10.84
▲ 5.72
1:08.63
▲ 2.21
200 IM SCY
—
—
—
3:36.67
2:45.53
▲ 51.14
2:43.09
▲ 2.44
2:30.82
▲ 12.27
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.