Swimmer profile
Liam Koos
Male13-14Cheshire Y Sea Dog Swim ClubCT · EASTERN
SeasonUSA Swimming season runs Sept – Aug
Event
2022–23
2023–24
2024–25
2025–26
50 Free LCM
37.30
31.75
▲ 5.55
29.90
▲ 1.85
28.88
▲ 1.02
100 Free LCM
1:23.24
1:15.04
▲ 8.20
1:05.78
▲ 9.26
1:01.53
▲ 4.25
200 Free LCM
3:18.16
2:47.47
▲ 30.69
2:30.95
▲ 16.52
2:19.21
▲ 11.74
400 Free LCM
6:26.07
6:18.00
▲ 8.07
5:19.13
▲ 58.87
4:54.28
▲ 24.85
1500 Free LCM
—
—
—
19:31.91
50 Back LCM
46.53
39.98
▲ 6.55
34.67
▲ 5.31
31.78
▲ 2.89
100 Back LCM
1:39.64
1:27.55
▲ 12.09
1:15.31
▲ 12.24
1:11.96
▲ 3.35
200 Back LCM
—
—
2:37.87
—
50 Breast LCM
50.66
46.54
▲ 4.12
36.70
▲ 9.84
36.11
▲ 0.59
100 Breast LCM
1:48.99
1:40.86
▲ 8.13
1:24.04
▲ 16.82
1:18.09
▲ 5.95
200 Breast LCM
—
—
3:04.87
2:47.00
▲ 17.87
50 Fly LCM
51.83
39.27
▲ 12.56
34.35
▲ 4.92
30.79
▲ 3.56
100 Fly LCM
—
1:40.47
1:23.47
▲ 17.00
1:08.11
▲ 15.36
200 Fly LCM
—
—
—
2:44.11
200 IM LCM
3:34.22
3:05.22
▲ 29.00
2:40.86
▲ 24.36
2:31.87
▲ 8.99
400 IM LCM
—
—
—
5:28.02
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.