Swimmer profile
Cj Achterkirchen
Male15-16Palo Alto Stanford AquaticsPC · WESTERN
SeasonUSA Swimming season runs Sept – Aug
Event
2018–19
2019–20
2020–21
2021–22
2022–23
2023–24
2024–25
2025–26
50 Free SCY
47.39
44.01
▲ 3.38
33.70
▲ 10.31
29.09
▲ 4.61
27.94
▲ 1.15
25.56
▲ 2.38
23.85
▲ 1.71
23.89
▼ 0.04
100 Free SCY
—
—
1:13.27
1:07.21
▲ 6.06
1:01.22
▲ 5.99
54.93
▲ 6.29
51.14
▲ 3.79
50.57
▲ 0.57
200 Free SCY
—
—
—
—
2:17.47
2:00.28
▲ 17.19
1:54.74
▲ 5.54
1:52.56
▲ 2.18
50 Back SCY
54.27
57.60
▼ 3.33
—
33.99
▲ 23.61
31.80
▲ 2.19
29.95
▲ 1.85
27.36
▲ 2.59
28.06
▼ 0.70
100 Back SCY
—
—
—
1:12.59
1:08.31
▲ 4.28
1:01.26
▲ 7.05
58.31
▲ 2.95
58.38
▼ 0.07
200 Back SCY
—
—
—
—
2:26.44
2:11.45
▲ 14.99
2:09.11
▲ 2.34
2:05.99
▲ 3.12
50 Breast SCY
—
—
47.08
45.01
▲ 2.07
43.59
▲ 1.42
39.55
▲ 4.04
37.91
▲ 1.64
—
100 Breast SCY
—
—
1:46.16
1:43.35
▲ 2.81
1:31.47
▲ 11.88
1:25.13
▲ 6.34
1:14.47
▲ 10.66
1:11.70
▲ 2.77
50 Fly SCY
—
—
—
34.47
34.28
▲ 0.19
28.54
▲ 5.74
28.98
▼ 0.44
—
100 Fly SCY
—
—
—
—
—
1:10.66
1:02.76
▲ 7.90
—
100 IM SCY
—
—
—
1:20.15
1:14.45
▲ 5.70
—
—
—
200 IM SCY
—
—
3:06.47
—
2:42.69
▲ 23.78
2:26.80
▲ 15.89
—
2:15.85
▲ 10.95
400 IM SCY
—
—
—
—
5:39.51
5:07.61
▲ 31.90
5:04.06
▲ 3.55
—
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.