Swimmer profile
Mackenzie Sederland
Female11-12FASTOH · CENTRAL
SeasonUSA Swimming season runs Sept – Aug
Event
2021–22
2022–23
2023–24
2024–25
2025–26
50 Free LCM
44.78
37.55
▲ 7.23
35.45
▲ 2.10
34.14
▲ 1.31
32.40
▲ 1.74
100 Free LCM
1:41.80
1:28.05
▲ 13.75
1:16.73
▲ 11.32
1:12.91
▲ 3.82
1:08.57
▲ 4.34
200 Free LCM
—
3:09.35
2:46.15
▲ 23.20
2:34.87
▲ 11.28
2:25.23
▲ 9.64
400 Free LCM
—
6:41.39
5:52.78
▲ 48.61
5:25.92
▲ 26.86
5:01.85
▲ 24.07
50 Back LCM
54.38
46.32
▲ 8.06
40.09
▲ 6.23
38.51
▲ 1.58
37.02
▲ 1.49
100 Back LCM
—
1:41.75
1:25.12
▲ 16.63
1:22.02
▲ 3.10
1:17.09
▲ 4.93
200 Back LCM
—
—
—
2:55.60
2:43.52
▲ 12.08
50 Breast LCM
1:01.19
51.68
▲ 9.51
45.22
▲ 6.46
42.64
▲ 2.58
38.49
▲ 4.15
100 Breast LCM
2:09.26
1:58.25
▲ 11.01
1:39.79
▲ 18.46
1:33.08
▲ 6.71
1:25.35
▲ 7.73
200 Breast LCM
—
—
—
3:17.13
3:03.12
▲ 14.01
50 Fly LCM
55.83
48.03
▲ 7.80
42.18
▲ 5.85
37.18
▲ 5.00
35.23
▲ 1.95
100 Fly LCM
—
1:53.81
1:34.84
▲ 18.97
—
1:17.55
▲ 17.29
200 IM LCM
—
3:35.87
3:08.11
▲ 27.76
2:53.92
▲ 14.19
2:43.12
▲ 10.80
400 IM LCM
—
—
—
—
5:41.15
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.