Swimmer profile
Collins Den Herder
Female15-16Yankton Swim TeamSD · CENTRAL
SeasonUSA Swimming season runs Sept – Aug
Event
2017–18
2018–19
2020–21
2021–22
2022–23
2023–24
2024–25
50 Free LCM
58.33
53.42
▲ 4.91
—
35.54
▲ 17.88
33.92
▲ 1.62
34.21
▼ 0.29
33.16
▲ 1.05
100 Free LCM
—
2:10.87
1:35.91
▲ 34.96
—
1:17.13
▲ 18.78
1:15.62
▲ 1.51
1:14.62
▲ 1.00
200 Free LCM
—
—
—
3:11.74
2:51.83
▲ 19.91
2:54.68
▼ 2.85
—
50 Back LCM
1:05.11
—
50.41
▲ 14.70
45.69
▲ 4.72
43.68
▲ 2.01
—
41.03
▲ 2.65
100 Back LCM
—
2:23.44
—
1:42.76
▲ 40.68
1:37.70
▲ 5.06
1:36.94
▲ 0.76
—
50 Breast LCM
1:27.74
1:13.49
▲ 14.25
58.37
▲ 15.12
53.80
▲ 4.57
47.35
▲ 6.45
—
48.02
▼ 0.67
100 Breast LCM
—
2:48.92
2:09.52
▲ 39.40
1:51.99
▲ 17.53
1:50.73
▲ 1.26
1:48.37
▲ 2.36
1:47.12
▲ 1.25
200 Breast LCM
—
—
—
—
—
3:52.85
—
50 Fly LCM
—
—
—
—
43.26
—
38.53
▲ 4.73
100 Fly LCM
—
—
—
—
—
1:53.15
—
200 IM LCM
—
—
—
—
—
3:27.45
—
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.