Justin Ko

Age: 18 years old
Age Category: 17-18
Team: Lincoln S F S | Unattached

Personal Best

Short course distance

Event

Time

Age

Date

Standard

Next Standard

Lincoln S F S

Unattached

USA

Free 50 Y

25.58

18

05/08/2026

BB

A: 23.59 (+1.99s | 7.8%)

2

499

1,000+

Free 100 Y

58.89

Analysis

18

05/08/2026

B

BB: 55.99 (+2.90s | 4.9%)

3

533

1,000+

Free 200 Y

2:19.51

Analysis

18

04/26/2024

B: 2:13.59 (+5.92s | 4.2%)

3

397

1,000+

50 Free

31.98

100 Free

35.09

1:07.07

100 Free

1:07.07

150 Free

36.87

1:43.94

200 Free

35.57

2:19.51

100 Free

1:12.44

Free 500 Y

6:38.97

Analysis

18

12/09/2023

B: 6:03.19 (+35.78s | 9.0%)

3

276

1,000+

Breast 50 Y

36.67

18

04/28/2023

1

79

1,000+

Breast 100 Y

1:22.07

Analysis

18

11/17/2023

B: 1:14.69 (+7.38s | 9.0%)

2

378

1,000+

Breast 200 Y

2:58.96

Analysis

18

12/09/2023

B: 2:42.29 (+16.67s | 9.3%)

1

99

1,000+

Fly 100 Y

1:25.98

Analysis

18

10/27/2023

B: 1:05.39 (+20.59s | 23.9%)

3

443

1,000+

50 Fly

38.61

100 Fly

47.37

1:25.98

100 Fly

1:25.98

Long course distance

Event	Time		Age	Date	Next Standard	Lincoln S F S	Unattached	Unattached	USA
Free 50 M	33.09		18	07/15/2023	B: 31.89 (+1.20s \| 3.6%)	3	145	145	1,000+

Free 100 M	1:13.06	Analysis	18	07/15/2023	B: 1:09.89 (+3.17s \| 4.3%)	3	140	140	1,000+

Fly 50 M	40.64		18	07/15/2023		3	72	72	1,000+

Above are the fastest times that Justin Ko has achieved in his swimming career. For each event, you can find Justin's best time, the corresponding time standard, as well as how much faster Justin needs to be to reach the next level. The last columns provide Justin rankings at the team and LSC levels. These rankings are based on the Justin's personal best, his 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	Sectionals	18U Spring Cup	Futures	Jrs - Winter	US Open	Summer Champ
Free 50 Y	25.58	22.19 (+3.39s \| 13.3%)	21.29 (+4.29s \| 16.8%)	21.29 (+4.29s \| 16.8%)	20.59 (+4.99s \| 19.5%)	20.09 (+5.49s \| 21.5%)	20.39 (+5.19s \| 20.3%)
Free 100 Y	58.89	48.19 (+10.70s \| 18.2%)	46.39 (+12.50s \| 21.2%)	46.39 (+12.50s \| 21.2%)	45.09 (+13.80s \| 23.4%)	43.49 (+15.40s \| 26.2%)	44.39 (+14.50s \| 24.6%)
Free 200 Y	2:19.51	1:45.79 (+33.72s \| 24.2%)	1:41.59 (+37.92s \| 27.2%)	1:41.59 (+37.92s \| 27.2%)	1:38.79 (+40.72s \| 29.2%)	1:36.49 (+43.02s \| 30.8%)	1:38.09 (+41.42s \| 29.7%)
Free 500 Y	6:38.97	4:47.79 (+111.18s \| 27.9%)	4:37.09 (+121.88s \| 30.5%)	4:37.09 (+121.88s \| 30.5%)	4:29.49 (+129.48s \| 32.5%)	4:22.09 (+136.88s \| 34.3%)	4:27.69 (+131.28s \| 32.9%)
Breast 50 Y	36.67	N/A	N/A	N/A	N/A	N/A	N/A
Breast 100 Y	1:22.07	1:00.89 (+21.18s \| 25.8%)	57.99 (+24.08s \| 29.3%)	57.99 (+24.08s \| 29.3%)	55.89 (+26.18s \| 31.9%)	54.19 (+27.88s \| 34.0%)	55.29 (+26.78s \| 32.6%)
Breast 200 Y	2:58.96	2:13.29 (+45.67s \| 25.5%)	2:07.99 (+50.97s \| 28.5%)	2:07.99 (+50.97s \| 28.5%)	2:02.29 (+56.67s \| 31.7%)	1:58.79 (+60.17s \| 33.6%)	2:00.99 (+57.97s \| 32.4%)
Fly 100 Y	1:25.98	52.89 (+33.09s \| 38.5%)	50.59 (+35.39s \| 41.2%)	50.59 (+35.39s \| 41.2%)	48.99 (+36.99s \| 43.0%)	47.79 (+38.19s \| 44.4%)	48.39 (+37.59s \| 43.7%)

Long Course Distance

Event	Best Time	Sectionals	18U Spring Cup	Futures	Jrs - Winter	US Open	Summer Champ
Free 50 M	33.09	25.89 (+7.20s \| 21.8%)	24.59 (+8.50s \| 25.7%)	24.59 (+8.50s \| 25.7%)	24.29 (+8.80s \| 26.6%)	23.39 (+9.70s \| 29.3%)	23.79 (+9.30s \| 28.1%)
Free 100 M	1:13.06	56.09 (+16.97s \| 23.2%)	53.59 (+19.47s \| 26.6%)	53.59 (+19.47s \| 26.6%)	52.59 (+20.47s \| 28.0%)	50.99 (+22.07s \| 30.2%)	51.99 (+21.07s \| 28.8%)
Fly 50 M	40.64	N/A	N/A	N/A	N/A	N/A	N/A

Progression

See how Justin Ko is improving gradually by choosing the distance and the stroke you are interested in. You can also compare the Justin'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 Justin Ko has participated in and his achievement. The last event displayed is the most recent. For each event, you can find the Justin's time, the progress against Justin's best time, the corresponding time standard, as well as how much faster Justin needs to be to reach the next level.

Event

Time

Progress

Standard

Next Standard

Age

Heat

Lane

Ranking

AAA League Championship Meet 2026

05/08/2026

San Francisco

50 Y Free

25.58

BB

A: 23.59 (+1.99s | 7.8%)

18

1

7

100 Y Free

58.89

-2.60s (New PB)

B

BB: 55.99 (+2.90s | 4.9%)

18

AAA League Championship Meet 2024

04/26/2024

San Francisco

200 Y Free

2:19.51

-10.98s (New PB)

B: 2:15.99 (+3.52s | 2.5%)

16

1

6

50 Free

31.98

100 Free

35.09

1:07.07

100 Free

1:07.07

150 Free

36.87

1:43.94

200 Free

35.57

2:19.51

100 Free

1:12.44

PAC Swim C B A+ Meet

12/09/2023

Burlingame

500 Y Free

6:38.97

-19.11s (New PB)

B: 6:08.39 (+30.58s | 7.7%)

15

1

8

6

200 Y Breast

2:58.96

-5.37s (New PB)

B: 2:47.09 (+11.87s | 6.6%)

15

1

6

PSL Pumpkin Spice Lover CBA+ Meet

11/17/2023

Pacifica

200 Y Breast

3:04.33

B: 2:47.09 (+17.24s | 9.4%)

15

2

8

500 Y Free

6:58.08

B: 6:08.39 (+49.69s | 11.9%)

15

5

2

1

100 Y Breast

1:22.07

-2.40s (New PB)

B: 1:16.89 (+5.18s | 6.3%)

15

5

3

200 Y Free

2:30.49

B: 2:15.99 (+14.50s | 9.6%)

15

3

6

1

TYR BAC Spooky Fall Classic C B A+ Meet

10/27/2023

Burlingame

100 Y Breast

1:24.67

+0.20s

B: 1:16.89 (+7.78s | 9.2%)

15

4

8

5

50 Breast

39.85

100 Breast

44.82

1:24.67

100 Breast

1:24.67

100 Y Free

1:01.49

-3.94s (New PB)

B

BB: 57.59 (+3.90s | 6.3%)

15

7

4

50 Free

29.81

100 Free

31.68

1:01.49

100 Free

1:01.49

100 Y Fly

1:25.98

B: 1:07.19 (+18.79s | 21.9%)

15

5

9

5

50 Fly

38.61

100 Fly

47.37

1:25.98

100 Fly

1:25.98

ALTO C B A+ Long Course Meet

07/15/2023

Fremont

100 M Free

1:13.06

B: 1:11.79 (+1.27s | 1.7%)

15

7

4

1

50 M Fly

40.64

15

4

1

9

50 M Free

33.09

B: 32.89 (+0.20s | 0.6%)

15

8

2

9

AAA League Championship Meet 2023

04/28/2023

San Francisco

100 Y IM

1:15.34

15

1

4

1

50 IM

36.70

100 IM

38.64

1:15.34

100 IM

1:15.34

50 Y Breast

36.67

15

1

3

2

BAC SC CBA+ Meet

02/25/2023

Burlingame

100 Y Free

1:05.43

B: 1:04.99 (+0.44s | 0.7%)

14

2

3

7

50 Free

11.92

100 Free

53.51

1:05.43

100 Free

1:05.43

100 Y Breast

1:24.47

-1.31s (New PB)

B: 1:20.49 (+3.98s | 4.7%)

14

3

9

50 Breast

40.24

100 Breast

44.23

1:24.47

100 Breast

1:24.47

TYR BAC Spooky Fall Classic CBA

10/29/2022

Burlingame

100 Y Breast

1:25.78

B: 1:20.49 (+5.29s | 6.2%)

14

6

9

2

Event	Best Time	Sectionals	18U Spring Cup	Futures	Jrs - Winter	US Open	Summer Champ
Free 50 Y	25.58	22.19 (+3.39s \| 13.3%)	21.29 (+4.29s \| 16.8%)	21.29 (+4.29s \| 16.8%)	20.59 (+4.99s \| 19.5%)	20.09 (+5.49s \| 21.5%)	20.39 (+5.19s \| 20.3%)
Free 100 Y	58.89	48.19 (+10.70s \| 18.2%)	46.39 (+12.50s \| 21.2%)	46.39 (+12.50s \| 21.2%)	45.09 (+13.80s \| 23.4%)	43.49 (+15.40s \| 26.2%)	44.39 (+14.50s \| 24.6%)
Free 200 Y	2:19.51	1:45.79 (+33.72s \| 24.2%)	1:41.59 (+37.92s \| 27.2%)	1:41.59 (+37.92s \| 27.2%)	1:38.79 (+40.72s \| 29.2%)	1:36.49 (+43.02s \| 30.8%)	1:38.09 (+41.42s \| 29.7%)
Free 500 Y	6:38.97	4:47.79 (+111.18s \| 27.9%)	4:37.09 (+121.88s \| 30.5%)	4:37.09 (+121.88s \| 30.5%)	4:29.49 (+129.48s \| 32.5%)	4:22.09 (+136.88s \| 34.3%)	4:27.69 (+131.28s \| 32.9%)
Breast 50 Y	36.67	N/A	N/A	N/A	N/A	N/A	N/A
Breast 100 Y	1:22.07	1:00.89 (+21.18s \| 25.8%)	57.99 (+24.08s \| 29.3%)	57.99 (+24.08s \| 29.3%)	55.89 (+26.18s \| 31.9%)	54.19 (+27.88s \| 34.0%)	55.29 (+26.78s \| 32.6%)
Breast 200 Y	2:58.96	2:13.29 (+45.67s \| 25.5%)	2:07.99 (+50.97s \| 28.5%)	2:07.99 (+50.97s \| 28.5%)	2:02.29 (+56.67s \| 31.7%)	1:58.79 (+60.17s \| 33.6%)	2:00.99 (+57.97s \| 32.4%)
Fly 100 Y	1:25.98	52.89 (+33.09s \| 38.5%)	50.59 (+35.39s \| 41.2%)	50.59 (+35.39s \| 41.2%)	48.99 (+36.99s \| 43.0%)	47.79 (+38.19s \| 44.4%)	48.39 (+37.59s \| 43.7%)