Swimmer profile

Liam Koos

Male13-14Cheshire Y Sea Dog Swim ClubCT · EASTERN

Performance Progression Goals Time Standards Meets

AAA standard achieved — outstanding season!

16 all-time personal bests this season!

Top 5 in CT — 200 Back LCM

Standards achieved

AAA×1AA×3A×10BB×2

All-time PBs

16events

Best CT rank

#5200 Back LCM

Events ranked

16LCM

Age group

13-14

★ Highlight Events

200 Back LCM

Standard	Cut	Gap
B✓	3:01.79	−23.92
BB✓	2:48.79	−10.92
A	2:35.79	+2.08
AA	2:29.29	+8.58
AAA	2:22.79	+15.08
AAAA	2:16.29	+21.58

PBAAA

2:37.87

2025 CT Age Group Championships

Jul 27, 2025

🎓 Class of 2031#9of 60 · CT#593 USA*

LSC

of 69

200 Breast LCM

Standard	Cut	Gap
B✓	3:22.79	−35.79
BB✓	3:08.29	−21.29
A✓	2:53.79	−6.79
AA	2:46.59	+0.41
AAA	2:39.39	+7.61
AAAA	2:32.09	+14.91

PBA

2:47.00

2026 CT Senior Championships

Jul 11, 2026

🎓 Class of 2031#2of 60 · CT#143 USA*

LSC

of 90

50 Back LCM

Standard	Cut	Gap
B✓	39.49	−7.71
BB✓	36.69	−4.91
A✓	33.89	−2.11
AA✓	32.49	−0.71
AAA	31.09	+0.69
AAAA	29.69	+2.09

PBAA

31.78

2026 CT Senior Championships

Jul 11, 2026

🎓 Class of 2031#3of 93 · CT#137 USA*

LSC

of 103

Event

50 Free LCM

Standard	Cut	Gap
B✓	34.29	−5.41
BB✓	31.79	−2.91
A✓	29.39	−0.51
AA	28.19	+0.69
AAA	26.89	+1.99
AAAA	25.69	+3.19

PBA

28.88

2026 CT MAC May Invitational

May 31, 2026

🎓 Class of 2031#18of 97 · CT#907 USA*

LSC

of 173

100 Free LCM

Standard	Cut	Gap
B✓	1:15.09	−13.56
BB✓	1:09.79	−8.26
A✓	1:04.39	−2.86
AA✓	1:01.69	−0.16
AAA	58.99	+2.54
AAAA	56.39	+5.14

PBAA

1:01.53

2026 CT WHAT May Trials/Finals

May 17, 2026

🎓 Class of 2031#7of 91 · CT#460 USA*

LSC

of 173

200 Free LCM

Standard	Cut	Gap
B✓	2:43.99	−24.78
BB✓	2:32.29	−13.08
A✓	2:20.59	−1.38
AA	2:14.69	+4.52
AAA	2:08.89	+10.32
AAAA	2:02.99	+16.22

PBA

2:19.21

2026 CT MAC May Invitational

May 31, 2026

🎓 Class of 2031#10of 88 · CT#793 USA*

LSC

of 165

400 Free LCM

Standard	Cut	Gap
B✓	5:48.39	−54.11
BB✓	5:23.49	−29.21
A✓	4:58.69	−4.41
AA	4:46.19	+8.09
AAA	4:33.79	+20.49
AAAA	4:21.29	+32.99

PBA

4:54.28

2026 CT MAC May Invitational

May 30, 2026

🎓 Class of 2031#11of 68 · CT#661 USA*

LSC

of 124

1500 Free LCM

Standard	Cut	Gap
B✓	23:04.59	−212.68
BB✓	21:25.69	−113.78
A✓	19:46.79	−14.88
AA	18:57.39	+34.52
AAA	18:07.89	+84.02
AAAA	17:18.49	+133.42

PBA

19:31.91

2026 CT CDOG May Distance Meet

May 8, 2026

🎓 Class of 2031#4of 20 · CT#253 USA*

LSC

of 45

50 Back LCM

Standard	Cut	Gap
B✓	39.49	−7.71
BB✓	36.69	−4.91
A✓	33.89	−2.11
AA✓	32.49	−0.71
AAA	31.09	+0.69
AAAA	29.69	+2.09

PBAA

31.78

2026 CT Senior Championships

Jul 11, 2026

🎓 Class of 2031#3of 93 · CT#137 USA*

LSC

of 103

100 Back LCM

Standard	Cut	Gap
B✓	1:23.69	−11.73
BB✓	1:17.69	−5.73
A	1:11.69	+0.27
AA	1:08.69	+3.27
AAA	1:05.79	+6.17
AAAA	1:02.79	+9.17

PBBB

1:11.96

2026 CT WHAT May Trials/Finals

May 16, 2026

🎓 Class of 2031#6of 86 · CT#488 USA*

LSC

of 144

200 Back LCM

Standard	Cut	Gap
B✓	3:01.79	−23.92
BB✓	2:48.79	−10.92
A	2:35.79	+2.08
AA	2:29.29	+8.58
AAA	2:22.79	+15.08
AAAA	2:16.29	+21.58

PBAAA

2:37.87

2025 CT Age Group Championships

Jul 27, 2025

🎓 Class of 2031#9of 60 · CT#593 USA*

LSC

of 69

50 Breast LCM

Standard	Cut	Gap
B✓	43.99	−7.88
BB✓	40.89	−4.78
A✓	37.69	−1.58
AA✓	36.19	−0.08
AAA	34.59	+1.52
AAAA	32.99	+3.12

PBAA

36.11

2026 CT MAC May Invitational

May 31, 2026

🎓 Class of 2031#7of 92 · CT#320 USA*

LSC

of 85

100 Breast LCM

Standard	Cut	Gap
B✓	1:33.79	−15.70
BB✓	1:27.09	−9.00
A✓	1:20.39	−2.30
AA	1:16.99	+1.10
AAA	1:13.69	+4.40
AAAA	1:10.29	+7.80

PBA

1:18.09

2026 CT WHAT May Trials/Finals

May 17, 2026

🎓 Class of 2031#6of 86 · CT#263 USA*

LSC

of 124

200 Breast LCM

Standard	Cut	Gap
B✓	3:22.79	−35.79
BB✓	3:08.29	−21.29
A✓	2:53.79	−6.79
AA	2:46.59	+0.41
AAA	2:39.39	+7.61
AAAA	2:32.09	+14.91

PBA

2:47.00

2026 CT Senior Championships

Jul 11, 2026

🎓 Class of 2031#2of 60 · CT#143 USA*

LSC

of 90

50 Fly LCM

Standard	Cut	Gap
B✓	37.29	−6.50
BB✓	34.59	−3.80
A✓	31.89	−1.10
AA	30.59	+0.20
AAA	29.29	+1.50
AAAA	27.99	+2.80

PBA

30.79

2026 CT CDOG June Qualifier

Jun 6, 2026

🎓 Class of 2031#8of 86 · CT#438 USA*

LSC

of 97

100 Fly LCM

Standard	Cut	Gap
B✓	1:20.29	−12.18
BB✓	1:14.59	−6.48
A✓	1:08.89	−0.78
AA	1:05.99	+2.12
AAA	1:03.09	+5.02
AAAA	1:00.29	+7.82

PBA

1:08.11

2026 CT WHAT May Trials/Finals

May 16, 2026

🎓 Class of 2031#7of 72 · CT#359 USA*

LSC

of 114

200 Fly LCM

Standard	Cut	Gap
B✓	2:59.69	−15.58
BB✓	2:46.79	−2.68
A	2:33.99	+10.12
AA	2:27.59	+16.52
AAA	2:21.19	+22.92
AAAA	2:14.79	+29.32

PBBB

2:44.11

2026 CT CDOG June Qualifier

Jun 6, 2026

🎓 Class of 2031#9of 26 · CT#466 USA*

LSC

of 40

200 IM LCM

Standard	Cut	Gap
B✓	3:02.89	−31.02
BB✓	2:49.79	−17.92
A✓	2:36.69	−4.82
AA	2:30.19	+1.68
AAA	2:23.69	+8.18
AAAA	2:17.19	+14.68

PBA

2:31.87

2026 CT WHAT May Trials/Finals

May 17, 2026

🎓 Class of 2031#6of 84 · CT#349 USA*

LSC

of 148

400 IM LCM

Standard	Cut	Gap
B✓	6:30.69	−62.67
BB✓	6:02.79	−34.77
A✓	5:34.89	−6.87
AA	5:20.89	+7.13
AAA	5:06.99	+21.03
AAAA	4:52.99	+35.03

PBA

5:28.02

2026 CT MAC May Invitational

May 29, 2026

🎓 Class of 2031#7of 37 · CT#347 USA*

LSC

of 66