Alyssa Ko

Age: 10 years old
Age Category: 10 & under
Team: Diablo Aquatics | Pacific Swimming

Personal Best

Short course distance

Event	Time		Age	Date	Standard	Next Standard	Diablo Aquatics	Pacific Swimming	Western Zone	USA
Free 25 Y	18.36		10	02/01/2025			2	187	497	1,000+

Free 50 Y	37.02		10	10/18/2025	B	BB: 35.99 (+1.03s \| 2.8%)	4	234	984	1,000+

Free 100 Y	1:26.96	Analysis	10	03/07/2026	B	BB: 1:21.09 (+5.87s \| 6.8%)	2	284	1,000+	1,000+

Back 25 Y	23.84		10	03/23/2025			6	303	1,000+	1,000+

Back 50 Y	43.44		10	02/20/2026	B	BB: 43.29 (+0.15s \| 0.3%)	4	183	854	1,000+

Breast 25 Y	34.61		10	03/23/2025			9	663	1,000+	1,000+

Fly 25 Y	23.77		10	02/01/2025			8	261	728	1,000+

Fly 50 Y	39.35		10	03/07/2026	BB	A: 36.99 (+2.36s \| 6.0%)	4	108	374	1,000+

IM 100 Y	1:33.82	Analysis	10	03/07/2026	B	BB: 1:33.19 (+0.63s \| 0.7%)	5	202	726	1,000+

Long course distance

Event	Time		Age	Date	Standard	Next Standard	Diablo Aquatics	Pacific Swimming	Western Zone	USA
Free 50 M	39.90		10	06/13/2026	BB	A: 36.59 (+3.31s \| 8.3%)	2	120	577	1,000+

Free 100 M	1:32.21	Analysis	10	05/23/2026	BB	A: 1:21.89 (+10.32s \| 11.2%)	2	144	605	1,000+

Back 50 M	46.56		10	06/13/2026	BB	A: 43.59 (+2.97s \| 6.4%)	2	91	483	1,000+

Breast 50 M	56.32		10	05/23/2026	B	BB: 55.49 (+0.83s \| 1.5%)	1	172	746	1,000+

Fly 50 M	44.97		10	06/13/2026	BB	A: 41.59 (+3.38s \| 7.5%)	2	90	382	1,000+

Above are the fastest times that Alyssa Ko has achieved in her swimming career. For each event, you can find Alyssa's best time, the corresponding time standard, as well as how much faster Alyssa needs to be to reach the next level. The last columns provide Alyssa rankings at the team and LSC levels. These rankings are based on the Alyssa's personal best, her current age category, and team; and are calculated from all the meets results.

Time Standards

Got the currrent age group time standard
Time standard for the next age group and the gap to reach it
Got the next age group’s time standard.

Short Course Distance

Event	Best Time	Age Group Championship	Far Western	Senior Open	Senior 2	Western Zone Sr.	Sectionals	18U Spring Cup	Futures	Jrs - Winter	US Open	Summer Champ	NATIONAL	SouthWestern Age Group Regional
Free 50 Y	37.02	31.39 (+5.63s \| 15.2%)	30.59 (+6.43s \| 17.4%)	29.99 (+7.03s \| 19.0%)	27.69 (+9.33s \| 25.2%)	26.09 (+10.93s \| 29.5%)	24.89 (+12.13s \| 32.8%)	23.89 (+13.13s \| 35.5%)	23.89 (+13.13s \| 35.5%)	23.29 (+13.73s \| 37.1%)	22.59 (+14.43s \| 39.0%)	22.79 (+14.23s \| 38.4%)	N/A	30.89 (+6.13s \| 16.6%)
Free 100 Y	1:26.96	1:10.49 (+16.47s \| 18.9%)	1:08.09 (+18.87s \| 21.7%)	1:04.99 (+21.97s \| 25.3%)	59.99 (+26.97s \| 31.0%)	56.59 (+30.37s \| 34.9%)	53.99 (+32.97s \| 37.9%)	51.89 (+35.07s \| 40.3%)	51.89 (+35.07s \| 40.3%)	50.39 (+36.57s \| 42.1%)	49.29 (+37.67s \| 43.3%)	49.69 (+37.27s \| 42.9%)	N/A	1:08.19 (+18.77s \| 21.6%)
Back 50 Y	43.44	36.69 (+6.75s \| 15.5%)	35.49 (+7.95s \| 18.3%)	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	36.49 (+6.95s \| 16.0%)
Fly 50 Y	39.35	36.19 (+3.16s \| 8.0%)	33.99 (+5.36s \| 13.6%)	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	35.09 (+4.26s \| 10.8%)
IM 100 Y	1:33.82	1:20.09 (+13.73s \| 14.6%)	1:17.09 (+16.73s \| 17.8%)	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	1:17.69 (+16.13s \| 17.2%)

Long Course Distance

Event	Best Time	Age Group Championship	Far Western	Senior Open	Senior 2	Western Zone Sr.	Sectionals	18U Spring Cup	Futures	Jrs - Winter	US Open	Summer Champ	NATIONAL	U.S Olympic Team Trials	SouthWestern Age Group Regional
Free 50 M	39.90	35.59 (+4.31s \| 10.8%)	34.79 (+5.11s \| 12.8%)	34.29 (+5.61s \| 14.1%)	31.69 (+8.21s \| 20.6%)	29.89 (+10.01s \| 25.1%)	28.69 (+11.21s \| 28.1%)	27.39 (+12.51s \| 31.4%)	27.39 (+12.51s \| 31.4%)	26.89 (+13.01s \| 32.6%)	26.29 (+13.61s \| 34.1%)	26.59 (+13.31s \| 33.4%)	N/A	25.69 (+14.21s \| 35.6%)	35.19 (+4.71s \| 11.8%)
Free 100 M	1:32.21	1:20.19 (+12.02s \| 13.0%)	1:17.59 (+14.62s \| 15.9%)	1:14.09 (+18.12s \| 19.7%)	1:08.39 (+23.82s \| 25.8%)	1:04.99 (+27.22s \| 29.5%)	1:01.89 (+30.32s \| 32.9%)	59.29 (+32.92s \| 35.7%)	59.29 (+32.92s \| 35.7%)	58.19 (+34.02s \| 36.9%)	56.99 (+35.22s \| 38.2%)	57.59 (+34.62s \| 37.5%)	N/A	55.79 (+36.42s \| 39.5%)	1:17.49 (+14.72s \| 16.0%)
Back 50 M	46.56	42.89 (+3.67s \| 7.9%)	40.49 (+6.07s \| 13.0%)	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	41.79 (+4.77s \| 10.2%)
Breast 50 M	56.32	47.49 (+8.83s \| 15.7%)	45.89 (+10.43s \| 18.5%)	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	46.19 (+10.13s \| 18.0%)
Fly 50 M	44.97	40.79 (+4.18s \| 9.3%)	38.49 (+6.48s \| 14.4%)	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	39.69 (+5.28s \| 11.7%)

Progression

See how Alyssa Ko is improving gradually by choosing the distance and the stroke you are interested in. You can also compare the Alyssa's time to another swimmer's and even view their profile for more information about them.

Select the distance and stroke

Compare with another swimmer

View this profile

Meets

See all the meets Alyssa Ko has participated in and her achievement. The last event displayed is the most recent. For each event, you can find the Alyssa's time, the progress against Alyssa's best time, the corresponding time standard, as well as how much faster Alyssa needs to be to reach the next level.

Event	Time	Progress	Standard	Next Standard	Age	Heat	Lane	Ranking
Orinda PC LC AG C B BB+			06/13/2026		Moraga
50 M Free	39.90	-7.74s (New PB)	BB	A: 36.59 (+3.31s \| 8.3%)	10	4	5	1

50 M Back	46.56	-9.22s (New PB)	BB	A: 43.59 (+2.97s \| 6.4%)	10	3	7	2

50 M Fly	44.97	-0.89s (New PB)	BB	A: 41.59 (+3.38s \| 7.5%)	10	2	2	2

2026 Tiger Aquatics C B BB+ Memorial Day Meet			05/23/2026		Stockton
50 M Breast	56.32	-16.75s (New PB)	B	BB: 55.49 (+0.83s \| 1.5%)	10	4	1	1

50 M Fly	45.86	-2.47s (New PB)	BB	A: 41.59 (+4.27s \| 9.3%)	10	2	5	3

100 M Free	1:32.21	-16.51s (New PB)	BB	A: 1:21.89 (+10.32s \| 11.2%)	10	2	8	7

SRVA Last Chance Meet B BB+			03/07/2026		San Ramon
100 Y IM	1:33.82	-0.51s (New PB)	B	BB: 1:33.19 (+0.63s \| 0.7%)	9	4	5	2

50 Y Fly	39.35	-1.03s (New PB)	BB	A: 36.99 (+2.36s \| 6.0%)	9	3	6	7

100 Y Free	1:26.96	-2.26s (New PB)	B	BB: 1:21.09 (+5.87s \| 6.8%)	9	5	4	2

Pacific Swim SCY C B BB+ Meet Hosted By TERA			02/20/2026		Concord
100 Y IM	1:36.36	+2.03s	B	BB: 1:33.19 (+3.17s \| 3.3%)	9	2	7	3

50 Y Fly	43.29	+2.91s	B	BB: 42.69 (+0.60s \| 1.4%)	9	2	6

50 Y Back	43.44		B	BB: 43.29 (+0.15s \| 0.3%)	9	3	7	1

Brentwood Seawolves SCY C B BB+			11/08/2025		Brentwood
50 Y Fly	44.32	+3.94s	B	BB: 42.69 (+1.63s \| 3.7%)	9	2	5	1

100 Y Free	1:29.22	-1.00s (New PB)	B	BB: 1:21.09 (+8.13s \| 9.1%)	9	2	6

100 Y IM	1:34.33	-4.06s (New PB)	B	BB: 1:33.19 (+1.14s \| 1.2%)	9	1	8	6

PC SRVA SCY B BB+ Meet			10/18/2025		San Ramon
100 Y IM	1:38.39		B	BB: 1:33.19 (+5.20s \| 5.3%)	9	6	1	1

50 Y Fly	43.72	+3.34s	B	BB: 42.69 (+1.03s \| 2.4%)	9	4	6	6

100 Y Free	1:30.22	-10.81s (New PB)	B	BB: 1:21.09 (+9.13s \| 10.1%)	9	5	7	4

50 Y Free	37.02	-1.26s (New PB)	B	BB: 35.99 (+1.03s \| 2.8%)	9	7	1	2

PC LAC C B BB			09/27/2025		Livermore
50 Y Free	38.28	-4.94s (New PB)	B	BB: 35.99 (+2.29s \| 6.0%)	9	3	1	3

50 Y Fly	40.38		BB	A: 36.99 (+3.39s \| 8.4%)	9	2	6	2

Orinda Aquatics LC C B BB+ Meet			06/07/2025		Moraga
50 M Fly	48.33	-3.34s (New PB)	B	BB: 48.09 (+0.24s \| 0.5%)	9	4	6	7

50 M Free	47.64			B: 45.29 (+2.35s \| 4.9%)	9	4	3	3

50 M Back	55.78		B	BB: 49.69 (+6.09s \| 10.9%)	9	5	7	4

2025 Tiger Aquatics C B BB+ Memorial Day Meet			05/24/2025		Stockton
50 M Fly	51.67		B	BB: 48.09 (+3.58s \| 6.9%)	9	4	5	3

100 M Free	1:48.72			B: 1:44.09 (+4.63s \| 4.3%)	9	4	6	1

50 M Breast	1:13.07			B: 1:02.19 (+10.88s \| 14.9%)	9	4	6	2

DA WCAB Short Course Dual Meet			03/23/2025		Walnut Creek
25 Y Back	23.84	-1.13s (New PB)			8	1	3	1

25 Y Free	18.73	+0.37s			8	1	3	1

25 Y Breast	34.61	-2.60s (New PB)			8	1	2	3

25 Y Fly	24.42	+0.65s			8	1	3	1

Zone 2 Winter Championship Meet			02/01/2025		Hayward
25 Y Free	18.36	-0.51s (New PB)			8	2	6

25 Y Fly	23.77	-0.37s (New PB)			8	2	3	3

25 Y Back	26.36	+1.39s			8	3	4	1

50 Y Free	43.22	-0.97s (New PB)		B: 39.79 (+3.43s \| 7.9%)	8	2	8	5

100 Y Free	1:41.03	-7.62s (New PB)		B: 1:30.79 (+10.24s \| 10.1%)	8	2	1	6

SRVA SCY CBBB+			11/02/2024		San Ramon
50 Y Free	44.19			B: 39.79 (+4.40s \| 10.0%)	8	2	1	3

25 Y Breast	37.21				8	4	4	9

25 Y Free	20.21	+1.34s			8	2	1	8

25 Y Back	25.55	+0.58s			8	2	8	8

25 Y Fly	27.69	+3.55s			8	3	7	5

BSW C B BB+ Oct 19 20, 2024 [PC 24 126]			10/19/2024		Oakley
25 Y Free	18.87	-2.25s (New PB)			8	2	4	3

25 Y Back	24.97	-0.36s (New PB)			8	1	6	3

25 Y Fly	24.14	-6.71s (New PB)			8	1	2	4

Orinda Aquatics SC C B BB+ Meet			09/28/2024		Moraga
25 Y Free	21.12	-2.44s (New PB)			8	3	6	5

25 Y Back	26.04	+0.71s			8	2	3	2

25 Y Fly	30.85				8	2	2	7

100 Y Free	1:48.65			B: 1:30.79 (+17.86s \| 16.4%)	8	1	2	6

Zone 2 Summer Championships			07/20/2024		hayward
25 Y Back	25.33				8	2	2	7

25 Y Free	23.56				8

Disclaimer: This Website is not affiliated with USA Swimming or any Local Swim Committee. The rankings and times displayed on this website are unofficial and should not be viewed as such. We update our information regularly, but we cannot guarantee that the data is accurate, timely, or complete. The only purpose of this website is entertainment. None of the information here should be used for university admission applications.