Swimmer profile
Collins Den Herder
Female15-16Yankton Swim TeamSD · CENTRAL
SeasonUSA Swimming season runs Sept – Aug
Event
2017–18
2018–19
2019–20
2020–21
2021–22
2022–23
2023–24
2024–25
2025–26
50 Free SCY
58.46
43.10
▲ 15.36
40.32
▲ 2.78
37.54
▲ 2.78
31.99
▲ 5.55
30.69
▲ 1.30
29.75
▲ 0.94
29.70
▲ 0.05
29.62
▲ 0.08
100 Free SCY
—
1:49.77
1:37.39
▲ 12.38
—
1:15.02
▲ 22.37
1:09.11
▲ 5.91
1:07.63
▲ 1.48
1:06.63
▲ 1.00
1:05.42
▲ 1.21
200 Free SCY
—
—
—
—
3:01.13
—
2:30.32
▲ 30.81
2:28.35
▲ 1.97
2:27.51
▲ 0.84
50 Back SCY
57.85
49.55
▲ 8.30
49.60
▼ 0.05
—
39.35
▲ 10.25
38.23
▲ 1.12
39.03
▼ 0.80
36.00
▲ 3.03
33.83
▲ 2.17
100 Back SCY
—
—
1:43.35
1:45.47
▼ 2.12
1:31.01
▲ 14.46
1:31.39
▼ 0.38
1:24.25
▲ 7.14
1:19.93
▲ 4.32
1:21.15
▼ 1.22
200 Back SCY
—
—
—
—
—
—
3:00.58
—
—
50 Breast SCY
—
1:00.30
52.71
▲ 7.59
—
45.85
▲ 6.86
42.16
▲ 3.69
—
40.43
▲ 1.73
—
100 Breast SCY
—
2:35.20
1:56.36
▲ 38.84
1:54.25
▲ 2.11
1:40.05
▲ 14.20
1:36.43
▲ 3.62
1:34.58
▲ 1.85
1:32.33
▲ 2.25
1:28.04
▲ 4.29
200 Breast SCY
—
—
—
—
—
—
3:22.16
3:18.51
▲ 3.65
—
50 Fly SCY
—
—
1:07.72
—
49.90
▲ 17.82
41.30
▲ 8.60
—
—
33.73
▲ 7.57
100 Fly SCY
—
—
—
—
—
—
—
1:23.41
—
100 IM SCY
—
—
1:46.01
1:50.53
▼ 4.52
1:35.41
▲ 15.12
1:26.55
▲ 8.86
1:21.55
▲ 5.00
1:19.24
▲ 2.31
1:18.15
▲ 1.09
200 IM SCY
—
—
—
—
—
—
3:00.45
2:54.62
▲ 5.83
—
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.