Mark Du

Age: 12 years old
Age Category: 11-12
Team: Trident Swim Club | Southern California Swimming

Personal Best

Short course distance

Event

Time

Age

Date

Standard

Next Standard

Trident Swim Club

Southern California Swimming

Western Zone

USA

Free 50 Y

26.00

03/12/2026

AAA: 25.79 (+0.21s | 0.8%)

146

816

Free 100 Y

56.15

Analysis

12/12/2025

AAA

AAAA: 53.59 (+2.56s | 4.6%)

575

50 Free

27.38

100 Free

28.77

56.15

100 Free

56.15

Back 50 Y

32.55

01/25/2025

AA: 31.19 (+1.36s | 4.2%)

278

1,000+

Back 100 Y

1:05.03

Analysis

12/12/2025

AAA: 1:02.79 (+2.24s | 3.4%)

444

50 Back

31.89

100 Back

33.14

1:05.03

100 Back

1:05.03

Breast 50 Y

33.12

03/12/2026

AAA

AAAA: 31.49 (+1.63s | 4.9%)

127

Breast 100 Y

1:13.03

Analysis

01/24/2026

AAA: 1:11.39 (+1.64s | 2.2%)

417

50 Breast

34.75

100 Breast

38.28

1:13.03

100 Breast

1:13.03

Fly 50 Y

27.01

03/12/2026

AAA

AAAA: 26.69 (+0.32s | 1.2%)

Fly 100 Y

1:01.30

Analysis

03/12/2026

AAA

AAAA: 59.09 (+2.21s | 3.6%)

257

50 Fly

29.53

100 Fly

31.77

1:01.30

100 Fly

1:01.30

IM 100 Y

1:04.23

Analysis

03/12/2026

AAA: 1:03.99 (+0.24s | 0.4%)

110

50 IM

31.21

100 IM

33.02

1:04.23

100 IM

1:04.23

IM 200 Y

2:24.11

Analysis

01/24/2026

AAA: 2:18.79 (+5.32s | 3.7%)

102

496

50 Fly

31.39

100 Back

37.28

1:08.67

100 IM

1:08.67

150 Breast

43.22

1:51.89

200 Free

32.22

2:24.11

100 IM

1:15.44

Long course distance

Event

Time

Age

Date

Standard

Next Standard

Trident Swim Club

Southern California Swimming

Western Zone

USA

Free 50 M

28.61

06/11/2026

AAA

AAAA: 28.09 (+0.52s | 1.8%)

Free 100 M

1:08.03

Analysis

07/24/2025

AA: 1:07.49 (+0.54s | 0.8%)

178

537

50 Free

33.04

100 Free

34.98

1:08.02

100 Free

1:08.02

Back 50 M

40.14

07/25/2024

A: 37.69 (+2.45s | 6.1%)

147

570

1,000+

Back 100 M

1:12.25

Analysis

06/11/2026

AAA

AAAA: 1:10.39 (+1.86s | 2.6%)

50 Back

35.16

100 Back

37.09

1:12.25

100 Back

1:12.25

Breast 50 M

36.02

06/11/2026

AAAA

Breast 100 M

1:19.97

Analysis

06/11/2026

AAA

AAAA: 1:18.99 (+0.98s | 1.2%)

Fly 50 M

30.04

06/11/2026

AAAA

Fly 100 M

1:08.38

Analysis

06/11/2026

AAA

AAAA: 1:07.79 (+0.59s | 0.9%)

IM 200 M

2:50.49

Analysis

07/24/2025

AA: 2:45.99 (+4.50s | 2.6%)

196

548

50 Fly

36.10

100 Back

44.78

1:20.88

100 IM

1:20.88

150 Breast

50.12

2:11.00

200 Free

39.49

2:50.49

100 IM

1:29.61

Above are the fastest times that Mark Du has achieved in his swimming career. For each event, you can find Mark's best time, the corresponding time standard, as well as how much faster Mark needs to be to reach the next level. The last columns provide Mark rankings at the team and LSC levels. These rankings are based on the Mark'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	SouthWestern Age Group Regional
Free 50 Y	26.00	22.19 (+3.81s \| 14.7%)	21.29 (+4.71s \| 18.1%)	21.29 (+4.71s \| 18.1%)	20.59 (+5.41s \| 20.8%)	20.09 (+5.91s \| 22.7%)	20.39 (+5.61s \| 21.6%)	27.49 26.29
Free 100 Y	56.15	48.19 (+7.96s \| 14.2%)	46.39 (+9.76s \| 17.4%)	46.39 (+9.76s \| 17.4%)	45.09 (+11.06s \| 19.7%)	43.49 (+12.66s \| 22.5%)	44.39 (+11.76s \| 20.9%)	59.29 56.69
Back 50 Y	32.55	N/A	N/A	N/A	N/A	N/A	N/A	31.89 (+0.66s \| 2.0%)
Back 100 Y	1:05.03	53.89 (+11.14s \| 17.1%)	51.49 (+13.54s \| 20.8%)	51.49 (+13.54s \| 20.8%)	49.39 (+15.64s \| 24.1%)	47.59 (+17.44s \| 26.8%)	48.89 (+16.14s \| 24.8%)	1:07.49 2:16.09
Breast 50 Y	33.12	N/A	N/A	N/A	N/A	N/A	N/A	35.49 2:35.19
Breast 100 Y	1:13.03	1:00.89 (+12.14s \| 16.6%)	57.99 (+15.04s \| 20.6%)	57.99 (+15.04s \| 20.6%)	55.89 (+17.14s \| 23.5%)	54.19 (+18.84s \| 25.8%)	55.29 (+17.74s \| 24.3%)	1:15.89 1:01.79 (+11.24s \| 15.4%)
Fly 50 Y	27.01	N/A	N/A	N/A	N/A	N/A	N/A	30.49
Fly 100 Y	1:01.30	52.89 (+8.41s \| 13.7%)	50.59 (+10.71s \| 17.5%)	50.59 (+10.71s \| 17.5%)	48.99 (+12.31s \| 20.1%)	47.79 (+13.51s \| 22.0%)	48.39 (+12.91s \| 21.1%)	1:07.09
IM 100 Y	1:04.23	N/A	N/A	N/A	N/A	N/A	N/A	1:08.09
IM 200 Y	2:24.11	1:58.19 (+25.92s \| 18.0%)	1:53.89 (+30.22s \| 21.0%)	1:53.89 (+30.22s \| 21.0%)	1:50.09 (+34.02s \| 23.6%)	1:46.39 (+37.72s \| 26.2%)	1:48.89 (+35.22s \| 24.4%)	2:27.09 2:18.59 (+5.52s \| 3.8%)

Long Course Distance

Event	Best Time	Sectionals	18U Spring Cup	Futures	Jrs - Winter	US Open	Summer Champ	SouthWestern Age Group Regional
Free 50 M	28.61	25.89 (+2.72s \| 9.5%)	24.59 (+4.02s \| 14.1%)	24.59 (+4.02s \| 14.1%)	24.29 (+4.32s \| 15.1%)	23.39 (+5.22s \| 18.2%)	23.79 (+4.82s \| 16.8%)	31.49 30.19
Free 100 M	1:08.03	56.09 (+11.94s \| 17.6%)	53.59 (+14.44s \| 21.2%)	53.59 (+14.44s \| 21.2%)	52.59 (+15.44s \| 22.7%)	50.99 (+17.04s \| 25.0%)	51.99 (+16.04s \| 23.6%)	1:07.49 (+0.54s \| 0.8%)
Back 50 M	40.14	N/A	N/A	N/A	N/A	N/A	N/A	36.79 (+3.35s \| 8.3%)
Back 100 M	1:12.25	1:03.29 (+8.96s \| 12.4%)	1:00.59 (+11.66s \| 16.1%)	1:00.59 (+11.66s \| 16.1%)	58.89 (+13.36s \| 18.5%)	57.29 (+14.96s \| 20.7%)	58.19 (+14.06s \| 19.5%)	1:18.49 1:13.09
Breast 50 M	36.02	N/A	N/A	N/A	N/A	N/A	N/A	40.39
Breast 100 M	1:19.97	1:11.29 (+8.68s \| 10.9%)	1:08.19 (+11.78s \| 14.7%)	1:08.19 (+11.78s \| 14.7%)	1:06.59 (+13.38s \| 16.7%)	1:04.09 (+15.88s \| 19.9%)	1:05.29 (+14.68s \| 18.4%)	1:27.69 1:21.99
Fly 50 M	30.04	N/A	N/A	N/A	N/A	N/A	N/A	34.39
Fly 100 M	1:08.38	1:00.89 (+7.49s \| 11.0%)	57.99 (+10.39s \| 15.2%)	57.99 (+10.39s \| 15.2%)	57.09 (+11.29s \| 16.5%)	55.09 (+13.29s \| 19.4%)	55.99 (+12.39s \| 18.1%)	1:16.39 1:10.69
IM 200 M	2:50.49	2:18.39 (+32.10s \| 18.8%)	2:12.79 (+37.70s \| 22.1%)	2:12.79 (+37.70s \| 22.1%)	2:09.59 (+40.90s \| 24.0%)	2:05.79 (+44.70s \| 26.2%)	2:08.19 (+42.30s \| 24.8%)	2:48.19 (+2.30s \| 1.3%)

Progression

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

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Compare with another swimmer

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Meets

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

Event

Time

Progress

Standard

Next Standard

Age

Heat

Lane

Ranking

ARMADA 2026 SCS June AG Invite

06/11/2026

La Mirada

100 M Fly

1:08.38

-7.46s (New PB)

AAA

AAAA: 1:07.79 (+0.59s | 0.9%)

100 M Back

1:12.25

-5.77s (New PB)

AAA

AAAA: 1:10.39 (+1.86s | 2.6%)

50 Back

35.16

100 Back

37.09

1:12.25

100 Back

1:12.25

50 M Fly

30.04

-2.37s (New PB)

AAAA

100 M Breast

1:19.97

-8.49s (New PB)

AAA

AAAA: 1:18.99 (+0.98s | 1.2%)

50 M Breast

36.02

-4.98s (New PB)

AAAA

50 M Free

28.61

AAA

AAAA: 28.09 (+0.52s | 1.8%)

2026 SCS Spring Age Group Champs @ RMDA Cop

03/12/2026

La Mirada

50 Y Free

26.00

-1.80s (New PB)

AAA: 25.79 (+0.21s | 0.8%)

100 Y Fly

1:01.30

-0.65s (New PB)

AAA

AAAA: 59.09 (+2.21s | 3.6%)

50 Fly

29.53

100 Fly

31.77

1:01.30

100 Fly

1:01.30

50 Y Fly

27.01

-0.95s (New PB)

AAA

AAAA: 26.69 (+0.32s | 1.2%)

100 Y Free

56.34

+0.19s

AAA: 56.19 (+0.15s | 0.3%)

50 Free

27.35

100 Free

28.99

56.34

100 Free

56.34

100 Y IM

1:04.23

-0.49s (New PB)

AAA: 1:03.99 (+0.24s | 0.4%)

50 IM

31.21

100 IM

33.02

1:04.23

100 IM

1:04.23

50 Y Breast

33.12

-12.42s (New PB)

AAA

AAAA: 31.49 (+1.63s | 4.9%)

100 Y Back

1:05.88

+0.85s

AAA: 1:02.79 (+3.09s | 4.7%)

2026 SCS Swim Festival

01/24/2026

Mission Viejo

200 Y IM

2:24.11

AAA: 2:18.79 (+5.32s | 3.7%)

50 Fly

31.39

100 Back

37.28

1:08.67

100 IM

1:08.67

150 Breast

43.22

1:51.89

200 Free

32.22

2:24.11

100 IM

1:15.44

50 Y Fly

28.33

+0.37s

AAA: 28.19 (+0.14s | 0.5%)

100 Y Breast

1:13.03

-0.91s (New PB)

AAA: 1:11.39 (+1.64s | 2.2%)

50 Breast

34.75

100 Breast

38.28

1:13.03

100 Breast

1:13.03

100 Y Fly

1:02.03

+0.08s

AAA

AAAA: 59.09 (+2.94s | 4.7%)

50 Fly

29.70

100 Fly

32.32

1:02.02

100 Fly

1:02.02

100 Y Free

57.29

+1.14s

AAA: 56.19 (+1.10s | 1.9%)

50 Free

27.69

100 Free

29.60

57.29

100 Free

57.29

2025 CA GWSC Winter Age Group Invitational

12/12/2025

Huntington Beach

100 Y IM

1:04.72

-3.93s (New PB)

AAA: 1:03.99 (+0.73s | 1.1%)

50 IM

30.52

100 IM

34.20

1:04.72

100 IM

1:04.72

100 Y Fly

1:01.95

-11.84s (New PB)

AAA

AAAA: 59.09 (+2.86s | 4.6%)

50 Fly

29.45

100 Fly

32.50

1:01.95

100 Fly

1:01.95

50 Y Fly

27.96

-1.76s (New PB)

AAA

AAAA: 26.69 (+1.27s | 4.5%)

100 Y Free

56.15

-5.82s (New PB)

AAA

AAAA: 53.59 (+2.56s | 4.6%)

50 Free

27.38

100 Free

28.77

56.15

100 Free

56.15

100 Y Breast

1:13.94

-4.75s (New PB)

AAA: 1:11.39 (+2.55s | 3.4%)

50 Breast

35.67

100 Breast

38.27

1:13.94

100 Breast

1:13.94

100 Y Back

1:05.03

-3.58s (New PB)

AAA: 1:02.79 (+2.24s | 3.4%)

50 Back

31.89

100 Back

33.14

1:05.03

100 Back

1:05.03

2025 CA SCS RAA Summer A G Champs

07/24/2025

Riverside

100 M Free

1:08.03

-3.57s (New PB)

AA: 1:07.49 (+0.54s | 0.8%)

50 Free

33.04

100 Free

34.98

1:08.02

100 Free

1:08.02

50 M Fly

32.41

-1.19s (New PB)

AAA: 31.99 (+0.42s | 1.3%)

200 M IM

2:50.49

AA: 2:45.99 (+4.50s | 2.6%)

50 Fly

36.10

100 Back

44.78

1:20.88

100 IM

1:20.88

150 Breast

50.12

2:11.00

200 Free

39.49

2:50.49

100 IM

1:29.61

100 M Back

1:18.02

-2.66s (New PB)

AAA: 1:14.29 (+3.73s | 4.8%)

50 Back

38.72

100 Back

39.30

1:18.02

100 Back

1:18.02

100 M Breast

1:30.17

+1.71s

AA: 1:27.19 (+2.98s | 3.3%)

50 Breast

43.07

100 Breast

47.10

1:30.17

100 Breast

1:30.17

100 M Fly

1:15.84

-1.83s (New PB)

AA: 1:15.59 (+0.25s | 0.3%)

50 Fly

36.24

100 Fly

39.60

1:15.84

100 Fly

1:15.84

2025 CA SCS RAA June Age Group Championships

06/12/2025

Riverside

50 M Fly

33.60

-3.34s (New PB)

AA: 33.59 (+0.01s | 0.0%)

100 M Fly

1:17.67

AA: 1:15.59 (+2.08s | 2.7%)

50 Fly

36.64

100 Fly

41.03

1:17.67

100 Fly

1:17.67

100 M Free

1:11.60

-1.74s (New PB)

A: 1:10.39 (+1.21s | 1.7%)

50 Free

34.85

100 Free

36.75

1:11.60

100 Free

1:11.60

100 M Breast

1:28.46

-11.23s (New PB)

AA: 1:27.19 (+1.27s | 1.4%)

50 Breast

42.28

100 Breast

46.18

1:28.46

100 Breast

1:28.46

100 M Back

1:20.68

-5.35s (New PB)

AA: 1:18.09 (+2.59s | 3.2%)

50 Back

39.38

100 Back

41.30

1:20.68

100 Back

1:20.68

50 M Breast

41.00

-5.43s (New PB)

AA: 39.99 (+1.01s | 2.5%)

2025 SCS Spring Age Group Champs @ Armada

03/13/2025

La Mirada

100 Y Free

1:01.97

-3.76s (New PB)

AAA

AAAA: 1:00.69 (+1.28s | 2.1%)

50 Free

30.15

100 Free

31.82

1:01.97

100 Free

1:01.97

100 Y Back

1:08.61

-1.72s (New PB)

AAAA

50 Back

34.02

100 Back

34.59

1:08.61

100 Back

1:08.61

100 Y Breast

1:18.69

-4.72s (New PB)

AAAA

50 Breast

37.90

100 Breast

40.79

1:18.69

100 Breast

1:18.69

100 Y IM

1:08.65

-2.07s (New PB)

AAAA

50 IM

31.64

100 IM

37.01

1:08.65

100 IM

1:08.65

50 Y Fly

29.72

-0.95s (New PB)

AAAA

50 Y Free

27.80

-0.92s (New PB)

AAA

AAAA: 27.49 (+0.31s | 1.1%)

2025 SCS All Star Festival

01/25/2025

Las Vegas

50 Y Fly

31.22

+0.55s

AAA

AAAA: 30.79 (+0.43s | 1.4%)

100 Y IM

1:10.72

-1.78s (New PB)

AAA

AAAA: 1:09.79 (+0.93s | 1.3%)

50 IM

32.22

100 IM

38.49

1:10.72

100 IM

1:10.72

100 Y Back

1:11.73

+1.40s

AAA

AAAA: 1:08.99 (+2.74s | 3.8%)

50 Back

34.60

100 Back

37.13

1:11.73

100 Back

1:11.73

50 Y Free

28.72

-4.30s (New PB)

AAA: 28.69 (+0.03s | 0.1%)

50 Y Back

32.55

AAA

AAAA: 32.19 (+0.36s | 1.1%)

100 Y Breast

1:24.65

+1.24s

AAA: 1:22.69 (+1.96s | 2.3%)

50 Breast

40.70

100 Breast

43.95

1:24.65

100 Breast

1:24.65

2024 CA RAA SCS WAG

12/13/2024

Riverside

100 Y Back

1:10.33

AAA

AAAA: 1:08.99 (+1.34s | 1.9%)

50 Back

34.15

100 Back

36.18

1:10.33

100 Back

1:10.33

100 Y Fly

1:13.79

AAA

AAAA: 1:09.79 (+4.00s | 5.4%)

50 Fly

34.34

100 Fly

39.45

1:13.79

100 Fly

1:13.79

100 Y Free

1:05.73

AAA: 1:03.79 (+1.94s | 3.0%)

50 Free

31.96

100 Free

33.77

1:05.73

100 Free

1:05.73

100 Y IM

1:12.50

AAA

AAAA: 1:09.79 (+2.71s | 3.7%)

50 IM

33.67

100 IM

38.83

1:12.50

100 IM

1:12.50

50 Y Fly

30.67

AAAA

100 Y Breast

1:23.41

AAA: 1:22.69 (+0.72s | 0.9%)

50 Breast

39.62

100 Breast

43.79

1:23.41

100 Breast

1:23.41

2024 CA SCS BREA Summer A G Champs

07/25/2024

Walnut

50 M Back

40.14

-1.05s (New PB)

AAA: 38.99 (+1.15s | 2.9%)

100 M Breast

1:39.69

-5.42s (New PB)

AAA: 1:36.29 (+3.40s | 3.4%)

100 M Free

1:13.34

-0.35s (New PB)

AAA: 1:13.19 (+0.15s | 0.2%)

50 Free

34.89

100 Free

38.45

1:13.34

100 Free

1:13.34

50 M Breast

46.43

-1.54s (New PB)

AA: 45.79 (+0.64s | 1.4%)

50 M Fly

36.94

-2.36s (New PB)

AAA: 36.59 (+0.35s | 0.9%)

100 M Back

1:26.03

-3.24s (New PB)

AAA: 1:24.09 (+1.94s | 2.3%)

50 Back

41.77

100 Back

44.26

1:26.03

100 Back

1:26.03

2024 CA SCS RMDA June Age Group Invite

06/13/2024

La Mirada

100 M Back

1:29.27

AA: 1:28.19 (+1.08s | 1.2%)

50 Back

42.01

100 Back

47.26

1:29.27

100 Back

1:29.27

100 M Breast

1:45.11

AA: 1:40.89 (+4.22s | 4.0%)

50 Breast

48.65

100 Breast

56.46

1:45.11

100 Breast

1:45.11

50 M Back

41.19

AA: 41.09 (+0.10s | 0.2%)

50 M Breast

47.97

A: 47.89 (+0.08s | 0.2%)

50 M Fly

39.30

AA: 38.59 (+0.71s | 1.8%)

100 M Free

1:13.69

AAA: 1:13.19 (+0.50s | 0.7%)

50 Free

34.95

100 Free

38.74

1:13.69

100 Free

1:13.69

2023 CA RAA SCS WAG

12/08/2023

Riverside

50 Y Free

33.02

A: 31.09 (+1.93s | 5.8%)

50 Y Breast

45.54

A: 42.09 (+3.45s | 7.6%)

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.