Seongjun Jo

Age: 15 years old
Age Category: 15-16
Team: Swim South Bay | Pacific Swimming

Personal Best

Short course distance

Event

Time

Age

Date

Standard

Next Standard

Swim South Bay

Pacific Swimming

Western Zone

USA

Free 50 Y

24.51

12/04/2025

A: 24.19 (+0.32s | 1.3%)

334

1,000+

Free 100 Y

54.90

01/16/2026

A: 53.19 (+1.71s | 3.1%)

400

1,000+

Free 200 Y

2:15.61

11/14/2025

BB: 2:06.29 (+9.32s | 6.9%)

589

1,000+

50 Free

31.95

100 Free

36.28

1:08.23

100 Free

1:08.23

150 Free

36.33

1:44.56

200 Free

31.05

2:15.61

100 Free

1:07.38

Back 50 Y

32.18

12/04/2025

293

1,000+

Back 100 Y

1:10.68

01/16/2026

B: 1:07.49 (+3.19s | 4.5%)

539

1,000+

Back 200 Y

2:51.20

11/04/2023

B: 2:27.59 (+23.61s | 13.8%)

483

1,000+

50 Back

39.77

100 Back

42.73

1:22.50

100 Back

1:22.50

150 Back

45.40

2:07.90

200 Back

43.30

2:51.20

100 Back

1:28.70

Breast 50 Y

34.14

11/14/2025

186

845

1,000+

Breast 100 Y

1:13.52

01/16/2026

BB: 1:11.39 (+2.13s | 2.9%)

390

1,000+

Breast 200 Y

3:07.23

11/04/2023

B: 2:47.09 (+20.14s | 10.8%)

536

1,000+

50 Breast

42.87

100 Breast

47.06

1:29.93

100 Breast

1:29.93

150 Breast

48.55

2:18.48

200 Breast

48.75

3:07.23

100 Breast

1:37.30

Fly 50 Y

26.96

11/14/2025

120

551

1,000+

Fly 100 Y

58.67

12/04/2025

A: 57.59 (+1.08s | 1.8%)

237

943

1,000+

50 Fly

27.48

100 Fly

31.19

58.67

100 Fly

58.67

IM 200 Y

2:22.60

01/16/2026

BB: 2:20.19 (+2.41s | 1.7%)

422

1,000+

Long course distance

Event

Time

Age

Date

Standard

Next Standard

Swim South Bay

Pacific Swimming

Western Zone

USA

Free 50 M

36.46

05/19/2023

B: 32.89 (+3.57s | 9.8%)

815

1,000+

Free 100 M

1:06.66

06/28/2025

A: 1:01.49 (+5.17s | 7.8%)

429

1,000+

Free 400 M

6:16.82

05/18/2024

B: 5:34.09 (+42.73s | 11.3%)

383

1,000+

Back 50 M

44.81

06/24/2023

399

1,000+

Back 100 M

1:45.01

05/19/2023

B: 1:19.39 (+25.62s | 24.4%)

698

1,000+

50 Back

51.01

100 Back

54.00

1:45.01

100 Back

1:45.01

Breast 50 M

50.97

06/24/2023

435

1,000+

Breast 100 M

1:43.98

05/18/2024

B: 1:29.49 (+14.49s | 13.9%)

614

1,000+

Fly 50 M

43.46

05/19/2023

438

1,000+

Fly 100 M

1:12.79

06/28/2025

BB: 1:11.29 (+1.50s | 2.1%)

262

1,000+

IM 200 M

2:48.68

06/28/2025

BB: 2:43.59 (+5.09s | 3.0%)

343

1,000+

Above are the fastest times that Seongjun Jo has achieved in his swimming career. For each event, you can find Seongjun's best time, the corresponding time standard, as well as how much faster Seongjun needs to be to reach the next level. The last columns provide Seongjun rankings at the team and LSC levels. These rankings are based on the Seongjun'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	Far Western	Senior Open	Senior 2	Western Zone Sr.	Sectionals	18U Spring Cup	Futures	Jrs - Winter	US Open	Summer Champ	NATIONAL
Free 50 Y	24.51	22.79 (+1.72s \| 7.0%)	26.89	24.79	23.29 (+1.22s \| 5.0%)	22.19 (+2.32s \| 9.5%)	21.29 (+3.22s \| 13.1%)	21.29 (+3.22s \| 13.1%)	20.59 (+3.92s \| 16.0%)	20.09 (+4.42s \| 18.0%)	20.39 (+4.12s \| 16.8%)	N/A
Free 100 Y	54.90	50.09 (+4.81s \| 8.8%)	58.69	54.19 (+0.71s \| 1.3%)	51.19 (+3.71s \| 6.8%)	48.19 (+6.71s \| 12.2%)	46.39 (+8.51s \| 15.5%)	46.39 (+8.51s \| 15.5%)	45.09 (+9.81s \| 17.9%)	43.49 (+11.41s \| 20.8%)	44.39 (+10.51s \| 19.1%)	N/A
Free 200 Y	2:15.61	1:48.89 (+26.72s \| 19.7%)	2:08.39 (+7.22s \| 5.3%)	1:58.59 (+17.02s \| 12.6%)	1:52.09 (+23.52s \| 17.3%)	1:45.79 (+29.82s \| 22.0%)	1:41.59 (+34.02s \| 25.1%)	1:41.59 (+34.02s \| 25.1%)	1:38.79 (+36.82s \| 27.2%)	1:36.49 (+39.12s \| 28.8%)	1:38.09 (+37.52s \| 27.7%)	N/A
Back 50 Y	32.18	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Back 100 Y	1:10.68	55.19 (+15.49s \| 21.9%)	1:04.69 (+5.99s \| 8.5%)	59.79 (+10.89s \| 15.4%)	55.99 (+14.69s \| 20.8%)	53.89 (+16.79s \| 23.8%)	51.49 (+19.19s \| 27.2%)	51.49 (+19.19s \| 27.2%)	49.39 (+21.29s \| 30.1%)	47.59 (+23.09s \| 32.7%)	48.89 (+21.79s \| 30.8%)	N/A
Back 200 Y	2:51.20	2:00.59 (+50.61s \| 29.6%)	2:20.69 (+30.51s \| 17.8%)	2:09.89 (+41.31s \| 24.1%)	2:01.59 (+49.61s \| 29.0%)	1:57.29 (+53.91s \| 31.5%)	1:52.79 (+58.41s \| 34.1%)	1:52.79 (+58.41s \| 34.1%)	1:48.29 (+62.91s \| 36.7%)	1:45.49 (+65.71s \| 38.4%)	1:47.09 (+64.11s \| 37.4%)	N/A
Breast 50 Y	34.14	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Breast 100 Y	1:13.52	1:03.89 (+9.63s \| 13.1%)	1:13.59	1:07.89 (+5.63s \| 7.7%)	1:02.89 (+10.63s \| 14.5%)	1:00.89 (+12.63s \| 17.2%)	57.99 (+15.53s \| 21.1%)	57.99 (+15.53s \| 21.1%)	55.89 (+17.63s \| 24.0%)	54.19 (+19.33s \| 26.3%)	55.29 (+18.23s \| 24.8%)	N/A
Breast 200 Y	3:07.23	2:18.19 (+49.04s \| 26.2%)	2:40.49 (+26.74s \| 14.3%)	2:28.09 (+39.14s \| 20.9%)	2:18.19 (+49.04s \| 26.2%)	2:13.29 (+53.94s \| 28.8%)	2:07.99 (+59.24s \| 31.6%)	2:07.99 (+59.24s \| 31.6%)	2:02.29 (+64.94s \| 34.7%)	1:58.79 (+68.44s \| 36.6%)	2:00.99 (+66.24s \| 35.4%)	N/A
Fly 50 Y	26.96	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Fly 100 Y	58.67	54.99 (+3.68s \| 6.3%)	1:03.89	58.99	55.49 (+3.18s \| 5.4%)	52.89 (+5.78s \| 9.9%)	50.59 (+8.08s \| 13.8%)	50.59 (+8.08s \| 13.8%)	48.99 (+9.68s \| 16.5%)	47.79 (+10.88s \| 18.5%)	48.39 (+10.28s \| 17.5%)	N/A
IM 200 Y	2:22.60	2:03.09 (+19.51s \| 13.7%)	2:23.29	2:12.29 (+10.31s \| 7.2%)	2:04.69 (+17.91s \| 12.6%)	1:58.19 (+24.41s \| 17.1%)	1:53.89 (+28.71s \| 20.1%)	1:53.89 (+28.71s \| 20.1%)	1:50.09 (+32.51s \| 22.8%)	1:46.39 (+36.21s \| 25.4%)	1:48.89 (+33.71s \| 23.6%)	N/A

Long Course Distance

Event	Best Time	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
Free 50 M	36.46	26.29 (+10.17s \| 27.9%)	30.19 (+6.27s \| 17.2%)	27.89 (+8.57s \| 23.5%)	26.79 (+9.67s \| 26.5%)	25.89 (+10.57s \| 29.0%)	24.59 (+11.87s \| 32.6%)	24.59 (+11.87s \| 32.6%)	24.29 (+12.17s \| 33.4%)	23.39 (+13.07s \| 35.8%)	23.79 (+12.67s \| 34.8%)	N/A	22.79 (+13.67s \| 37.5%)
Free 100 M	1:06.66	57.19 (+9.47s \| 14.2%)	1:07.39	1:02.19 (+4.47s \| 6.7%)	59.19 (+7.47s \| 11.2%)	56.09 (+10.57s \| 15.9%)	53.59 (+13.07s \| 19.6%)	53.59 (+13.07s \| 19.6%)	52.59 (+14.07s \| 21.1%)	50.99 (+15.67s \| 23.5%)	51.99 (+14.67s \| 22.0%)	N/A	49.99 (+16.67s \| 25.0%)
Free 400 M	6:16.82	4:26.99 (+109.83s \| 29.1%)	5:12.79 (+64.03s \| 17.0%)	4:48.69 (+88.13s \| 23.4%)	4:34.19 (+102.63s \| 27.2%)	4:21.09 (+115.73s \| 30.7%)	4:09.99 (+126.83s \| 33.7%)	4:09.99 (+126.83s \| 33.7%)	4:05.29 (+131.53s \| 34.9%)	3:59.29 (+137.53s \| 36.5%)	4:02.79 (+134.03s \| 35.6%)	N/A	3:55.59 (+141.23s \| 37.5%)
Back 50 M	44.81	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Back 100 M	1:45.01	1:04.59 (+40.42s \| 38.5%)	1:15.49 (+29.52s \| 28.1%)	1:09.69 (+35.32s \| 33.6%)	1:05.89 (+39.12s \| 37.3%)	1:03.29 (+41.72s \| 39.7%)	1:00.59 (+44.42s \| 42.3%)	1:00.59 (+44.42s \| 42.3%)	58.89 (+46.12s \| 43.9%)	57.29 (+47.72s \| 45.4%)	58.19 (+46.82s \| 44.6%)	N/A	55.69 (+49.32s \| 47.0%)
Breast 50 M	50.97	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Breast 100 M	1:43.98	1:12.89 (+31.09s \| 29.9%)	1:25.49 (+18.49s \| 17.8%)	1:18.89 (+25.09s \| 24.1%)	1:13.79 (+30.19s \| 29.0%)	1:11.29 (+32.69s \| 31.4%)	1:08.19 (+35.79s \| 34.4%)	1:08.19 (+35.79s \| 34.4%)	1:06.59 (+37.39s \| 36.0%)	1:04.09 (+39.89s \| 38.4%)	1:05.29 (+38.69s \| 37.2%)	N/A	1:02.19 (+41.79s \| 40.2%)
Fly 50 M	43.46	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Fly 100 M	1:12.79	1:02.49 (+10.30s \| 14.2%)	1:12.69 (+0.10s \| 0.1%)	1:07.09 (+5.70s \| 7.8%)	1:03.59 (+9.20s \| 12.6%)	1:00.89 (+11.90s \| 16.3%)	57.99 (+14.80s \| 20.3%)	57.99 (+14.80s \| 20.3%)	57.09 (+15.70s \| 21.6%)	55.09 (+17.70s \| 24.3%)	55.99 (+16.80s \| 23.1%)	N/A	53.59 (+19.20s \| 26.4%)
IM 200 M	2:48.68	2:21.29 (+27.39s \| 16.2%)	2:45.49 (+3.19s \| 1.9%)	2:32.79 (+15.89s \| 9.4%)	2:25.09 (+23.59s \| 14.0%)	2:18.39 (+30.29s \| 18.0%)	2:12.79 (+35.89s \| 21.3%)	2:12.79 (+35.89s \| 21.3%)	2:09.59 (+39.09s \| 23.2%)	2:05.79 (+42.89s \| 25.4%)	2:08.19 (+40.49s \| 24.0%)	N/A	2:03.49 (+45.19s \| 26.8%)

Progression

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Meets

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

Event

Time

Progress

Standard

Next Standard

Age

Heat

Lane

Ranking

2026 Brian Malick Memorial Z1S Championships

01/16/2026

Morgan Hill

100 Y Fly

59.78

+1.11s

A: 57.59 (+2.19s | 3.7%)

100 Y Back

1:10.68

-0.78s (New PB)

B: 1:07.49 (+3.19s | 4.5%)

100 Y Breast

1:13.52

-2.49s (New PB)

BB: 1:11.39 (+2.13s | 2.9%)

100 Y Free

54.90

-0.64s (New PB)

A: 53.19 (+1.71s | 3.1%)

200 Y IM

2:22.60

-2.65s (New PB)

BB: 2:20.19 (+2.41s | 1.7%)

50 Y Free

24.52

+0.01s

A: 24.19 (+0.33s | 1.3%)

2025 Holiday Swim Festival

12/04/2025

Tempe

50 Y Back

32.18

-1.15s (New PB)

100 Y Fly

58.67

-2.05s (New PB)

A: 57.59 (+1.08s | 1.8%)

50 Fly

27.48

100 Fly

31.19

58.67

100 Fly

58.67

50 Y Breast

34.83

+0.69s

100 Y Breast

1:16.01

-4.80s (New PB)

BB: 1:11.39 (+4.62s | 6.1%)

50 Breast

35.94

100 Breast

40.07

1:16.01

100 Breast

1:16.01

50 Y Free

24.51

-0.85s (New PB)

A: 24.19 (+0.32s | 1.3%)

50 Y Fly

27.21

+0.25s

100 Y Free

55.99

+0.45s

A: 53.19 (+2.80s | 5.0%)

50 Free

26.34

100 Free

29.65

55.99

100 Free

55.99

2025 Santa Clara Swim Club SC CBA Meet

11/14/2025

Morgan Hill

200 Y IM

2:25.25

-7.12s (New PB)

BB: 2:20.19 (+5.06s | 3.5%)

50 Fly

29.19

100 Back

37.64

1:06.83

100 IM

1:06.83

150 Breast

44.77

1:51.60

200 Free

33.65

2:25.25

100 IM

1:18.42

200 Y Free

2:15.61

-1.74s (New PB)

BB: 2:06.29 (+9.32s | 6.9%)

50 Free

31.95

100 Free

36.28

1:08.23

100 Free

1:08.23

150 Free

36.33

1:44.56

200 Free

31.05

2:15.61

100 Free

1:07.38

100 Y Free

55.54

-2.66s (New PB)

A: 53.19 (+2.35s | 4.2%)

50 Free

26.88

100 Free

28.66

55.54

100 Free

55.54

50 Y Back

33.33

-10.44s (New PB)

50 Y Breast

34.14

-5.27s (New PB)

100 Y Fly

1:00.72

-0.73s (New PB)

A: 57.59 (+3.13s | 5.2%)

50 Fly

27.69

100 Fly

33.03

1:00.72

100 Fly

1:00.72

50 Y Free

25.36

-0.16s (New PB)

A: 24.19 (+1.17s | 4.6%)

50 Y Fly

26.96

-4.74s (New PB)

PC Short Course Senior Open

09/20/2025

Novato

50 Y Free

25.52

-0.67s (New PB)

AA: 24.59 (+0.93s | 3.6%)

100 Y Fly

1:01.45

-4.03s (New PB)

A: 1:00.39 (+1.06s | 1.7%)

50 Fly

28.47

100 Fly

32.98

1:01.45

100 Fly

1:01.45

Orinda Aquatics LC Senior Open Meet

06/28/2025

Moraga

200 M IM

2:48.68

A: 2:36.69 (+11.99s | 7.1%)

100 M Fly

1:12.79

A: 1:08.89 (+3.90s | 5.4%)

100 M Free

1:06.66

-4.39s (New PB)

A: 1:04.39 (+2.27s | 3.4%)

2025 Brian Malick Memorial Z1S Championships

01/24/2025

Morgan Hill

100 Y Breast

1:20.81

-2.63s (New PB)

B: 1:20.49 (+0.32s | 0.4%)

50 Y Free

26.19

-0.46s (New PB)

A: 25.59 (+0.60s | 2.3%)

100 Y Fly

1:05.48

-8.52s (New PB)

A: 1:00.39 (+5.09s | 7.8%)

100 Y Free

58.20

-22.39s (New PB)

A: 55.69 (+2.51s | 4.3%)

200 Y IM

2:32.37

BB: 2:26.69 (+5.68s | 3.7%)

100 Y Back

1:11.46

-1.86s (New PB)

B: 1:11.29 (+0.17s | 0.2%)

BAY Short Course Micro Meet

11/09/2024

San Jose

100 Y IM

1:10.53

SCSC Pacific Swimming Short Cours C B A+ Meet

10/04/2024

Morgan Hill

100 Y Fly

1:14.00

B: 1:10.49 (+3.51s | 4.7%)

50 Y Free

26.65

-10.63s (New PB)

A: 25.59 (+1.06s | 4.0%)

100 Y Breast

1:23.44

B: 1:20.49 (+2.95s | 3.5%)

200 Y Free

2:17.35

BB: 2:12.29 (+5.06s | 3.7%)

Swim South Bay Micro Meet

06/26/2024

San Jose

100 Y Back

1:13.32

B: 1:11.29 (+2.03s | 2.8%)

50 Y Fly

31.70

-8.24s (New PB)

50 Y Breast

39.41

-8.47s (New PB)

San Benito Aquatics C B A+

05/18/2024

Hollister

100 M Free

1:11.05

-7.36s (New PB)

BB: 1:09.79 (+1.26s | 1.8%)

100 M Breast

1:43.98

-4.91s (New PB)

B: 1:33.79 (+10.19s | 9.8%)

400 M Free

6:16.82

B: 5:48.39 (+28.43s | 7.5%)

QSS Short Course Distance CBA+ Meet

11/04/2023

San Jose

200 Y Breast

3:07.23

B: 2:54.89 (+12.34s | 6.6%)

50 Breast

42.87

100 Breast

47.06

1:29.93

100 Breast

1:29.93

150 Breast

48.55

2:18.48

200 Breast

48.75

3:07.23

100 Breast

1:37.30

200 Y Back

2:51.20

B: 2:34.69 (+16.51s | 9.6%)

50 Back

39.77

100 Back

42.73

1:22.50

100 Back

1:22.50

150 Back

45.40

2:07.90

200 Back

43.30

2:51.20

100 Back

1:28.70

SBA Long Course C B A+

06/24/2023

Hollister

50 M Back

44.81

-2.77s (New PB)

B: 44.49 (+0.32s | 0.7%)

100 M Free

1:20.04

+1.63s

BB: 1:16.19 (+3.85s | 4.8%)

100 M Breast

1:48.89

B: 1:47.79 (+1.10s | 1.0%)

50 M Breast

50.97

-3.63s (New PB)

B: 49.79 (+1.18s | 2.3%)

2023 Quicksilver Swimming LC CBA+ Meet

05/19/2023

San Jose

100 M Free

1:18.41

BB: 1:16.19 (+2.22s | 2.8%)

50 Free

36.98

100 Free

41.43

1:18.41

100 Free

1:18.41

100 M Back

1:45.01

B: 1:37.19 (+7.82s | 7.4%)

50 Back

51.01

100 Back

54.00

1:45.01

100 Back

1:45.01

50 M Fly

43.46

B: 41.99 (+1.47s | 3.4%)

50 M Breast

54.60

B: 49.79 (+4.81s | 8.8%)

50 M Back

47.58

B: 44.49 (+3.09s | 6.5%)

50 M Free

36.46

BB: 34.79 (+1.67s | 4.6%)

2023 Brian Malick Memorial Z1S Championships

01/27/2023

Morgan Hill

50 Y Fly

39.94

B: 37.09 (+2.85s | 7.1%)

50 Y Back

43.77

-6.73s (New PB)

B: 38.49 (+5.28s | 12.1%)

50 Y Breast

47.88

-5.39s (New PB)

B: 43.49 (+4.39s | 9.2%)

2022 QSS TIDE Spooktacular

10/28/2022

San Jose

100 Y Free

1:20.59

B: 1:11.49 (+9.10s | 11.3%)

50 Free

36.66

100 Free

43.93

1:20.59

100 Free

1:20.59

50 Y Free

37.28

-0.70s (New PB)

B: 32.79 (+4.49s | 12.0%)

SCSC $ Bay CBA+

09/23/2022

Santa Clara

50 Y Back

50.50

B: 38.49 (+12.01s | 23.8%)

50 Y Breast

53.27

B: 43.49 (+9.78s | 18.4%)

50 Y Free

37.98

B: 32.79 (+5.19s | 13.7%)

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.