Swimmer profile
William Erkmann
Male13-14Swim Streamline at NorthamptonGU · SOUTHERN
SeasonUSA Swimming season runs Sept – Aug
Event
2020–21
2021–22
2022–23
2023–24
2024–25
2025–26
50 Free LCM
36.94
33.02
▲ 3.92
—
29.65
▲ 3.37
28.87
▲ 0.78
26.65
▲ 2.22
100 Free LCM
1:20.47
1:12.89
▲ 7.58
1:09.66
▲ 3.23
1:02.33
▲ 7.33
1:00.50
▲ 1.83
57.03
▲ 3.47
200 Free LCM
—
2:37.59
2:31.72
▲ 5.87
2:18.19
▲ 13.53
2:13.64
▲ 4.55
2:07.66
▲ 5.98
400 Free LCM
—
—
5:24.42
5:12.81
▲ 11.61
4:55.79
▲ 17.02
4:53.19
▲ 2.60
50 Back LCM
44.03
38.61
▲ 5.42
36.14
▲ 2.47
33.31
▲ 2.83
—
29.93
▲ 3.38
100 Back LCM
1:35.93
1:23.72
▲ 12.21
1:17.90
▲ 5.82
1:11.58
▲ 6.32
1:09.08
▲ 2.50
1:03.85
▲ 5.23
200 Back LCM
—
—
2:49.76
2:37.95
▲ 11.81
2:33.90
▲ 4.05
2:21.75
▲ 12.15
50 Breast LCM
51.96
46.60
▲ 5.36
43.95
▲ 2.65
—
—
—
100 Breast LCM
2:00.25
—
1:37.86
▲ 22.39
1:33.83
▲ 4.03
—
1:21.14
▲ 12.69
200 Breast LCM
—
—
—
—
—
2:56.98
50 Fly LCM
—
35.23
33.66
▲ 1.57
31.25
▲ 2.41
—
—
100 Fly LCM
—
1:26.68
1:17.80
▲ 8.88
1:10.40
▲ 7.40
1:09.39
▲ 1.01
1:02.46
▲ 6.93
200 IM LCM
3:37.04
3:02.14
▲ 34.90
2:54.64
▲ 7.50
—
2:33.77
▲ 20.87
2:21.87
▲ 11.90
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.