Swimmer profile
Mackenzie Sederland
Female11-12FASTOH · CENTRAL
SeasonUSA Swimming season runs Sept – Aug
Event
2022–23
2023–24
2024–25
2025–26
50 Free SCY
36.30
32.88
▲ 3.42
31.32
▲ 1.56
28.28
▲ 3.04
100 Free SCY
1:23.62
1:10.61
▲ 13.01
1:06.88
▲ 3.73
1:01.54
▲ 5.34
200 Free SCY
—
2:29.26
2:19.35
▲ 9.91
2:07.95
▲ 11.40
500 Free SCY
—
6:56.92
6:23.69
▲ 33.23
5:47.12
▲ 36.57
1650 Free SCY
—
—
—
19:30.59
50 Back SCY
42.31
35.99
▲ 6.32
33.98
▲ 2.01
32.10
▲ 1.88
100 Back SCY
1:31.28
1:14.87
▲ 16.41
1:13.09
▲ 1.78
1:06.36
▲ 6.73
200 Back SCY
—
—
—
2:24.87
50 Breast SCY
48.41
41.02
▲ 7.39
37.33
▲ 3.69
35.01
▲ 2.32
100 Breast SCY
1:51.06
1:27.68
▲ 23.38
1:21.10
▲ 6.58
1:15.51
▲ 5.59
200 Breast SCY
—
—
—
2:42.02
50 Fly SCY
43.76
39.23
▲ 4.53
35.42
▲ 3.81
31.41
▲ 4.01
100 Fly SCY
—
1:32.53
1:18.72
▲ 13.81
1:11.90
▲ 6.82
200 Fly SCY
—
—
—
2:44.80
100 IM SCY
1:30.97
1:19.00
▲ 11.97
1:13.12
▲ 5.88
1:07.82
▲ 5.30
200 IM SCY
—
2:52.19
2:34.47
▲ 17.72
2:25.03
▲ 9.44
400 IM SCY
—
—
—
5:00.81
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.