Swimmer profile
Mackenzie Marrero
Female11-12New Jersey Race ClubNJ · EASTERN
SeasonUSA Swimming season runs Sept – Aug
Event
2021–22
2022–23
2023–24
2024–25
2025–26
50 Free LCM
45.74
—
33.42
▲ 12.32
33.22
▲ 0.20
32.53
▲ 0.69
100 Free LCM
—
1:24.73
1:17.22
▲ 7.51
1:16.27
▲ 0.95
1:08.69
▲ 7.58
200 Free LCM
—
—
2:47.65
2:45.37
▲ 2.28
2:35.81
▲ 9.56
50 Back LCM
53.12
46.50
▲ 6.62
—
39.01
▲ 7.49
37.64
▲ 1.37
100 Back LCM
—
—
1:31.79
—
—
50 Breast LCM
1:02.72
47.45
▲ 15.27
43.14
▲ 4.31
42.63
▲ 0.51
39.41
▲ 3.22
100 Breast LCM
2:08.06
1:51.17
▲ 16.89
1:33.82
▲ 17.35
1:34.33
▼ 0.51
1:28.93
▲ 5.40
50 Fly LCM
1:01.29
57.18
▲ 4.11
44.06
▲ 13.12
39.56
▲ 4.50
36.60
▲ 2.96
200 IM LCM
—
—
3:15.85
3:03.72
▲ 12.13
—
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.