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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 12 03/12/2026 AA AAA: 25.79 (+0.21s | 0.8%) 1 30 159 793
Free 100 Y 56.15 Analysis 12 12/12/2025 AAA AAAA: 53.59 (+2.56s | 4.6%) 1 16 82 544
50 Free
27.38
27.38
100 Free
28.77
56.15
100 Free
56.15
Back 50 Y 32.55 12 01/25/2025 A AA: 31.19 (+1.36s | 4.2%) 1 61 258 1,000+
Back 100 Y 1:05.03 Analysis 12 12/12/2025 AA AAA: 1:02.79 (+2.24s | 3.4%) 1 22 72 399
50 Back
31.89
31.89
100 Back
33.14
1:05.03
100 Back
1:05.03
Breast 50 Y 33.12 12 03/12/2026 AAA AAAA: 31.49 (+1.63s | 4.9%) 1 10 26 96
Breast 100 Y 1:13.03 Analysis 12 01/24/2026 AA AAA: 1:11.39 (+1.64s | 2.2%) 1 25 69 387
50 Breast
34.75
34.75
100 Breast
38.28
1:13.03
100 Breast
1:13.03
Fly 50 Y 27.01 12 03/12/2026 AAA AAAA: 26.69 (+0.32s | 1.2%) 1 3 5 28
Fly 100 Y 1:01.30 Analysis 12 03/12/2026 AAA AAAA: 59.09 (+2.21s | 3.6%) 1 14 44 245
50 Fly
29.53
29.53
100 Fly
31.77
1:01.30
100 Fly
1:01.30
IM 100 Y 1:04.23 Analysis 12 03/12/2026 AA AAA: 1:03.99 (+0.24s | 0.4%) 1 12 24 86
50 IM
31.21
31.21
100 IM
33.02
1:04.23
100 IM
1:04.23
IM 200 Y 2:24.11 Analysis 12 01/24/2026 AA AAA: 2:18.79 (+5.32s | 3.7%) 1 26 91 451
50 Fly
31.39
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 12 06/11/2026 AAA AAAA: 28.09 (+0.52s | 1.8%) 1 16 40 114
Free 100 M 1:08.03 Analysis 12 07/24/2025 A AA: 1:07.49 (+0.54s | 0.8%) 1 71 218 634
50 Free
33.04
33.04
100 Free
34.98
1:08.02
100 Free
1:08.02
Back 50 M 40.14 12 07/25/2024 BB A: 37.69 (+2.45s | 6.1%) 3 174 579 1,000+
Back 100 M 1:12.25 Analysis 12 06/11/2026 AAA AAAA: 1:10.39 (+1.86s | 2.6%) 1 15 28 99
50 Back
35.16
35.16
100 Back
37.09
1:12.25
100 Back
1:12.25
Breast 50 M 35.39 12 07/23/2026 AAAA 1 6 10 22
Breast 100 M 1:19.20 Analysis 12 07/23/2026 AAA AAAA: 1:18.99 (+0.21s | 0.3%) 1 13 22 41
50 Breast
38.62
38.62
100 Breast
40.58
1:19.20
100 Breast
1:19.20
Fly 50 M 30.04 12 06/11/2026 AAAA 1 6 13 37
Fly 100 M 1:08.13 Analysis 12 07/23/2026 AAA AAAA: 1:07.79 (+0.34s | 0.5%) 1 11 17 50
50 Fly
32.40
32.40
100 Fly
35.73
1:08.13
100 Fly
1:08.13
IM 200 M 2:36.55 Analysis 12 07/23/2026 AAA AAAA: 2:30.59 (+5.96s | 3.8%) 1 16 33 102
50 Fly
32.61
32.61
100 Back
41.31
1:13.93
100 IM
1:13.93
150 Breast
47.09
2:01.02
200 Free
35.53
2:36.55
100 IM
1:22.62

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.

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.