Jonathan Chen

Age: 9 years old
Age Category: 10 & under
Team: California Dolphins Swim Team | Pacific Swimming

Personal Best

Short course distance

Event	Time	Age	Date	Standard	Next Standard	Pacific Swimming	California Dolphins Swim Team
Free 25 Y	17.16	8	07/26/2025			87	5

Free 50 Y	35.11	9	10/18/2025	B	BB: 34.59 (+0.52s \| 1.5%)	165	6

Free 100 Y	1:25.24	9	10/18/2025	B	BB: 1:18.89 (+6.35s \| 7.4%)	242	9

Back 50 Y	44.04	8	07/26/2025	B	BB: 42.89 (+1.15s \| 2.6%)	206	8

Back 100 Y	1:33.45	9	10/18/2025	B	BB: 1:30.09 (+3.36s \| 3.6%)	118	2

Breast 25 Y	27.14	8	01/24/2025			245	19

Breast 50 Y	48.83	8	07/26/2025	B	BB: 47.69 (+1.14s \| 2.3%)	187	8

Breast 100 Y	1:42.08	9	10/18/2025	BB	A: 1:30.59 (+11.49s \| 11.3%)	101	4

Fly 50 Y	48.32	8	07/26/2025		B: 46.49 (+1.83s \| 3.8%)	284	17

IM 100 Y	1:31.44	9	10/18/2025	B	BB: 1:29.69 (+1.75s \| 1.9%)	154	9

Long course distance

Event	Time	Age	Date	Next Standard	Pacific Swimming	California Dolphins Swim Team
Free 50 M	53.08	8	06/07/2025	B: 43.89 (+9.19s \| 17.3%)	436	18

Free 100 M	2:03.10	8	06/07/2025	B: 1:40.99 (+22.11s \| 18.0%)	418	16

Back 50 M	55.60	8	06/07/2025	B: 55.39 (+0.21s \| 0.4%)	263	13

Back 100 M	2:11.34	8	06/07/2025	B: 1:56.69 (+14.65s \| 11.2%)	241	9

Breast 50 M	1:04.82	8	06/07/2025	B: 1:00.89 (+3.93s \| 6.1%)	310	13

Breast 100 M	2:24.62	8	06/07/2025	B: 2:12.89 (+11.73s \| 8.1%)	248	11

Above are the fastest times that Jonathan Chen has achieved in his swimming career. For each event, you can find Jonathan's best time, the corresponding time standard, as well as how much faster Jonathan needs to be to reach the next level. The last columns provide Jonathan rankings at the team and LSC levels. These rankings are based on the Jonathan'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	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	35.11	30.99 (+4.12s \| 11.7%)	30.19 (+4.92s \| 14.0%)	26.89 (+8.22s \| 23.4%)	24.79 (+10.32s \| 29.4%)	23.29 (+11.82s \| 33.7%)	22.19 (+12.92s \| 36.8%)	21.29 (+13.82s \| 39.4%)	21.29 (+13.82s \| 39.4%)	20.59 (+14.52s \| 41.4%)	20.09 (+15.02s \| 42.8%)	20.39 (+14.72s \| 41.9%)	N/A	30.49 (+4.62s \| 13.2%)
Free 100 Y	1:25.24	1:09.69 (+15.55s \| 18.2%)	1:07.59 (+17.65s \| 20.7%)	58.69 (+26.55s \| 31.1%)	54.19 (+31.05s \| 36.4%)	51.19 (+34.05s \| 39.9%)	48.19 (+37.05s \| 43.5%)	46.39 (+38.85s \| 45.6%)	46.39 (+38.85s \| 45.6%)	45.09 (+40.15s \| 47.1%)	43.49 (+41.75s \| 49.0%)	44.39 (+40.85s \| 47.9%)	N/A	1:07.19 (+18.05s \| 21.2%)
Back 50 Y	44.04	36.99 (+7.05s \| 16.0%)	35.79 (+8.25s \| 18.7%)	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	36.29 (+7.75s \| 17.6%)
Back 100 Y	1:33.45	1:18.89 (+14.56s \| 15.6%)	1:17.09 (+16.36s \| 17.5%)	1:04.69 (+28.76s \| 30.8%)	59.79 (+33.66s \| 36.0%)	55.99 (+37.46s \| 40.1%)	53.89 (+39.56s \| 42.3%)	51.49 (+41.96s \| 44.9%)	51.49 (+41.96s \| 44.9%)	49.39 (+44.06s \| 47.1%)	47.59 (+45.86s \| 49.1%)	48.89 (+44.56s \| 47.7%)	N/A	1:16.59 (+16.86s \| 18.0%)
Breast 50 Y	48.83	40.99 (+7.84s \| 16.1%)	39.99 (+8.84s \| 18.1%)	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	40.29 (+8.54s \| 17.5%)
Breast 100 Y	1:42.08	1:28.99 (+13.09s \| 12.8%)	1:26.99 (+15.09s \| 14.8%)	1:13.59 (+28.49s \| 27.9%)	1:07.89 (+34.19s \| 33.5%)	1:02.89 (+39.19s \| 38.4%)	1:00.89 (+41.19s \| 40.4%)	57.99 (+44.09s \| 43.2%)	57.99 (+44.09s \| 43.2%)	55.89 (+46.19s \| 45.2%)	54.19 (+47.89s \| 46.9%)	55.29 (+46.79s \| 45.8%)	N/A	1:26.29 (+15.79s \| 15.5%)
Fly 50 Y	48.32	35.39 (+12.93s \| 26.8%)	33.99 (+14.33s \| 29.7%)	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	34.69 (+13.63s \| 28.2%)
IM 100 Y	1:31.44	1:18.89 (+12.55s \| 13.7%)	1:16.89 (+14.55s \| 15.9%)	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	1:16.99 (+14.45s \| 15.8%)

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	53.08	35.49 (+17.59s \| 33.1%)	34.39 (+18.69s \| 35.2%)	30.19 (+22.89s \| 43.1%)	27.89 (+25.19s \| 47.5%)	26.79 (+26.29s \| 49.5%)	25.89 (+27.19s \| 51.2%)	24.59 (+28.49s \| 53.7%)	24.59 (+28.49s \| 53.7%)	24.29 (+28.79s \| 54.2%)	23.39 (+29.69s \| 55.9%)	23.79 (+29.29s \| 55.2%)	N/A	22.79 (+30.29s \| 57.1%)	34.59 (+18.49s \| 34.8%)
Free 100 M	2:03.10	1:19.49 (+43.61s \| 35.4%)	1:17.09 (+46.01s \| 37.4%)	1:07.39 (+55.71s \| 45.3%)	1:02.19 (+60.91s \| 49.5%)	59.19 (+63.91s \| 51.9%)	56.09 (+67.01s \| 54.4%)	53.59 (+69.51s \| 56.5%)	53.59 (+69.51s \| 56.5%)	52.59 (+70.51s \| 57.3%)	50.99 (+72.11s \| 58.6%)	51.99 (+71.11s \| 57.8%)	N/A	49.99 (+73.11s \| 59.4%)	1:16.89 (+46.21s \| 37.5%)
Back 50 M	55.60	42.99 (+12.61s \| 22.7%)	40.79 (+14.81s \| 26.6%)	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	41.59 (+14.01s \| 25.2%)
Back 100 M	2:11.34	1:30.89 (+40.45s \| 30.8%)	1:26.79 (+44.55s \| 33.9%)	1:15.49 (+55.85s \| 42.5%)	1:09.69 (+61.65s \| 46.9%)	1:05.89 (+65.45s \| 49.8%)	1:03.29 (+68.05s \| 51.8%)	1:00.59 (+70.75s \| 53.9%)	1:00.59 (+70.75s \| 53.9%)	58.89 (+72.45s \| 55.2%)	57.29 (+74.05s \| 56.4%)	58.19 (+73.15s \| 55.7%)	N/A	55.69 (+75.65s \| 57.6%)	1:27.69 (+43.65s \| 33.2%)
Breast 50 M	1:04.82	46.99 (+17.83s \| 27.5%)	45.59 (+19.23s \| 29.7%)	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	46.29 (+18.53s \| 28.6%)
Breast 100 M	2:24.62	1:42.69 (+41.93s \| 29.0%)	1:39.19 (+45.43s \| 31.4%)	1:25.49 (+59.13s \| 40.9%)	1:18.89 (+65.73s \| 45.5%)	1:13.79 (+70.83s \| 49.0%)	1:11.29 (+73.33s \| 50.7%)	1:08.19 (+76.43s \| 52.8%)	1:08.19 (+76.43s \| 52.8%)	1:06.59 (+78.03s \| 54.0%)	1:04.09 (+80.53s \| 55.7%)	1:05.29 (+79.33s \| 54.9%)	N/A	1:02.19 (+82.43s \| 57.0%)	1:40.19 (+44.43s \| 30.7%)

Progression

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

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Meets

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

Event

Time

Progress

Standard

Next Standard

Age

Heat

Lane

Ranking

PC CDST SC C B BB+

10/18/2025

Fremont

100 Y Free

1:25.24

-3.51s (New PB)

BB: 1:18.89 (+6.35s | 7.4%)

100 Y IM

1:31.44

-1.91s (New PB)

BB: 1:29.69 (+1.75s | 1.9%)

100 Y Back

1:33.45

-6.54s (New PB)

BB: 1:30.09 (+3.36s | 3.6%)

100 Y Breast

1:42.08

-21.75s (New PB)

A: 1:30.59 (+11.49s | 11.3%)

50 Y Free

35.11

-1.20s (New PB)

BB: 34.59 (+0.52s | 1.5%)

PC LAC C B BB

09/27/2025

Livermore

100 Y IM

1:36.69

+3.34s

BB: 1:29.69 (+7.00s | 7.2%)

100 Y Free

1:28.75

-7.49s (New PB)

B: 1:27.99 (+0.76s | 0.9%)

50 Y Free

38.52

+2.21s

B: 38.19 (+0.33s | 0.9%)

50 Y Fly

50.20

+1.88s

B: 46.49 (+3.71s | 7.4%)

100 Y Back

1:39.99

-16.91s (New PB)

BB: 1:30.09 (+9.90s | 9.9%)

50 Y Breast

49.64

+0.81s

BB: 47.69 (+1.95s | 3.9%)

Zone 2 Summer Championships

07/26/2025

Hayward

100 Y IM

1:33.35

-26.25s (New PB)

BB: 1:29.69 (+3.66s | 3.9%)

25 Y Free

17.16

-2.79s (New PB)

50 Y Free

36.31

-5.12s (New PB)

BB: 34.59 (+1.72s | 4.7%)

50 Y Fly

48.32

-13.70s (New PB)

B: 46.49 (+1.83s | 3.8%)

50 Y Breast

48.83

-14.40s (New PB)

BB: 47.69 (+1.14s | 2.3%)

50 Y Back

44.04

-9.74s (New PB)

BB: 42.89 (+1.15s | 2.6%)

2025 06 07 CDST LC C B BB+ Meet

06/07/2025

Fremont

50 M Back

55.60

B: 55.39 (+0.21s | 0.4%)

100 M Breast

2:24.62

B: 2:12.89 (+11.73s | 8.1%)

100 M Back

2:11.34

B: 1:56.69 (+14.65s | 11.2%)

50 M Breast

1:04.82

B: 1:00.89 (+3.93s | 6.1%)

50 M Free

53.08

B: 43.89 (+9.19s | 17.3%)

100 M Free

2:03.10

B: 1:40.99 (+22.11s | 18.0%)

Alto Rock The Blocks Invitational

03/29/2025

Palo Alto

100 Y Free

1:36.24

-4.72s (New PB)

B: 1:27.99 (+8.25s | 8.6%)

50 Free

45.10

100 Free

51.14

1:36.24

100 Free

1:36.24

100 Y Breast

2:03.83

-9.25s (New PB)

B: 1:54.09 (+9.74s | 7.9%)

50 Breast

58.93

100 Breast

1:04.90

2:03.83

100 Breast

2:03.83

50 Y Back

53.78

-6.77s (New PB)

B: 48.29 (+5.49s | 10.2%)

Swim South Bay

02/08/2025

San Jose

50 Y Fly

1:02.02

-5.38s (New PB)

B: 46.49 (+15.53s | 25.0%)

100 Y Free

1:40.96

-1.47s (New PB)

B: 1:27.99 (+12.97s | 12.8%)

100 Y Back

1:56.90

B: 1:40.69 (+16.21s | 13.9%)

2025 Brian Malick Memorial Z1S Championships

01/24/2025

Morgan Hill

25 Y Breast

27.14

50 Y Free

43.91

+2.48s

B: 38.19 (+5.72s | 13.0%)

25 Y Free

19.95

MBSC GSMY Z1S Race To AGC C B A+

11/15/2024

Morgan Hill

100 Y Breast

2:13.08

B: 1:54.09 (+18.99s | 14.3%)

50 Y Free

41.43

B: 38.19 (+3.24s | 7.8%)

50 Y Breast

1:03.23

B: 53.39 (+9.84s | 15.6%)

50 Y Back

1:00.55

B: 48.29 (+12.26s | 20.2%)

50 Y Fly

1:07.40

B: 46.49 (+20.91s | 31.0%)

100 Y Free

1:42.43

B: 1:27.99 (+14.44s | 14.1%)

100 Y IM

1:59.60

B: 1:39.69 (+19.91s | 16.6%)

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.

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	53.08	35.49 (+17.59s \| 33.1%)	34.39 (+18.69s \| 35.2%)	30.19 (+22.89s \| 43.1%)	27.89 (+25.19s \| 47.5%)	26.79 (+26.29s \| 49.5%)	25.89 (+27.19s \| 51.2%)	24.59 (+28.49s \| 53.7%)	24.59 (+28.49s \| 53.7%)	24.29 (+28.79s \| 54.2%)	23.39 (+29.69s \| 55.9%)	23.79 (+29.29s \| 55.2%)	N/A	22.79 (+30.29s \| 57.1%)	34.59 (+18.49s \| 34.8%)
Free 100 M	2:03.10	1:19.49 (+43.61s \| 35.4%)	1:17.09 (+46.01s \| 37.4%)	1:07.39 (+55.71s \| 45.3%)	1:02.19 (+60.91s \| 49.5%)	59.19 (+63.91s \| 51.9%)	56.09 (+67.01s \| 54.4%)	53.59 (+69.51s \| 56.5%)	53.59 (+69.51s \| 56.5%)	52.59 (+70.51s \| 57.3%)	50.99 (+72.11s \| 58.6%)	51.99 (+71.11s \| 57.8%)	N/A	49.99 (+73.11s \| 59.4%)	1:16.89 (+46.21s \| 37.5%)
Back 50 M	55.60	42.99 (+12.61s \| 22.7%)	40.79 (+14.81s \| 26.6%)	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	41.59 (+14.01s \| 25.2%)
Back 100 M	2:11.34	1:30.89 (+40.45s \| 30.8%)	1:26.79 (+44.55s \| 33.9%)	1:15.49 (+55.85s \| 42.5%)	1:09.69 (+61.65s \| 46.9%)	1:05.89 (+65.45s \| 49.8%)	1:03.29 (+68.05s \| 51.8%)	1:00.59 (+70.75s \| 53.9%)	1:00.59 (+70.75s \| 53.9%)	58.89 (+72.45s \| 55.2%)	57.29 (+74.05s \| 56.4%)	58.19 (+73.15s \| 55.7%)	N/A	55.69 (+75.65s \| 57.6%)	1:27.69 (+43.65s \| 33.2%)
Breast 50 M	1:04.82	46.99 (+17.83s \| 27.5%)	45.59 (+19.23s \| 29.7%)	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	46.29 (+18.53s \| 28.6%)
Breast 100 M	2:24.62	1:42.69 (+41.93s \| 29.0%)	1:39.19 (+45.43s \| 31.4%)	1:25.49 (+59.13s \| 40.9%)	1:18.89 (+65.73s \| 45.5%)	1:13.79 (+70.83s \| 49.0%)	1:11.29 (+73.33s \| 50.7%)	1:08.19 (+76.43s \| 52.8%)	1:08.19 (+76.43s \| 52.8%)	1:06.59 (+78.03s \| 54.0%)	1:04.09 (+80.53s \| 55.7%)	1:05.29 (+79.33s \| 54.9%)	N/A	1:02.19 (+82.43s \| 57.0%)	1:40.19 (+44.43s \| 30.7%)