Swimmer profile
Leif Cox
Male13-14North Jeffco Swim TeamCO · WESTERN
SeasonUSA Swimming season runs Sept – Aug
Event
2022–23
2023–24
2024–25
2025–26
50 Free LCM
34.56
31.40
▲ 3.16
29.01
▲ 2.39
27.33
▲ 1.68
100 Free LCM
1:15.64
1:11.22
▲ 4.42
1:05.28
▲ 5.94
1:00.34
▲ 4.94
200 Free LCM
2:46.94
2:35.56
▲ 11.38
2:22.14
▲ 13.42
2:12.76
▲ 9.38
400 Free LCM
6:07.68
5:41.31
▲ 26.37
5:07.58
▲ 33.73
4:47.17
▲ 20.41
800 Free LCM
—
—
10:50.23
10:32.08
▲ 18.15
1500 Free LCM
—
—
—
19:52.15
50 Back LCM
41.91
37.54
▲ 4.37
35.14
▲ 2.40
35.36
▼ 0.22
100 Back LCM
1:29.60
1:20.31
▲ 9.29
1:20.16
▲ 0.15
1:12.68
▲ 7.48
200 Back LCM
3:10.25
2:52.64
▲ 17.61
2:51.63
▲ 1.01
2:33.22
▲ 18.41
50 Breast LCM
49.22
46.95
▲ 2.27
—
40.90
▲ 6.05
100 Breast LCM
1:48.66
—
1:34.91
▲ 13.75
—
200 Breast LCM
—
—
3:15.65
—
50 Fly LCM
39.92
34.78
▲ 5.14
31.62
▲ 3.16
30.80
▲ 0.82
100 Fly LCM
1:39.85
1:25.83
▲ 14.02
1:18.75
▲ 7.08
1:09.13
▲ 9.62
200 Fly LCM
—
3:16.46
3:04.39
▲ 12.07
2:41.50
▲ 22.89
200 IM LCM
3:28.76
3:00.68
▲ 28.08
2:39.38
▲ 21.30
2:39.72
▼ 0.34
400 IM LCM
—
—
6:20.95
5:48.32
▲ 32.63
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.