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Mark Du

Age: 11 years old
Age Category: 11-12
Team: Los Angeles-Blue | Southern California Swimming

Personal Best

Short course distance

Event Time Age Date Standard Next Standard Los Angeles-Blue Southern California Swimming Western Zone USA
Free 50 Y 27.80 10 03/13/2025 A AA: 26.99 (+0.81s | 2.9%) 6 108 516 1,000+
Free 100 Y 56.15 11 12/12/2025 AAA AAAA: 53.59 (+2.56s | 4.6%) 2 21 109 648
50 Free
27.38
27.38
100 Free
28.77
56.15
100 Free
56.15
Back 50 Y 32.55 10 01/25/2025 A AA: 31.19 (+1.36s | 4.2%) 5 84 357 1,000+
Back 100 Y 1:05.03 11 12/12/2025 AA AAA: 1:02.79 (+2.24s | 3.4%) 2 26 95 517
50 Back
31.89
31.89
100 Back
33.14
1:05.03
100 Back
1:05.03
Breast 50 Y 45.54 9 12/08/2023 B: 43.49 (+2.05s | 4.5%) 5 255 1,000+ 1,000+
Breast 100 Y 1:13.03 11 01/24/2026 AA AAA: 1:11.39 (+1.64s | 2.2%) 2 34 108 493
50 Breast
34.75
34.75
100 Breast
38.28
1:13.03
100 Breast
1:13.03
Fly 50 Y 27.96 11 12/12/2025 AAA AAAA: 26.69 (+1.27s | 4.5%) 1 11 35 166
Fly 100 Y 1:01.95 11 12/12/2025 AAA AAAA: 59.09 (+2.86s | 4.6%) 2 15 57 339
50 Fly
29.45
29.45
100 Fly
32.50
1:01.95
100 Fly
1:01.95
IM 100 Y 1:04.72 11 12/12/2025 AA AAA: 1:03.99 (+0.73s | 1.1%) 4 21 58 204
50 IM
30.52
30.52
100 IM
34.20
1:04.72
100 IM
1:04.72
IM 200 Y 2:24.11 11 01/24/2026 AA AAA: 2:18.79 (+5.32s | 3.7%) 4 41 144 645
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 Los Angeles-Blue Southern California Swimming Western Zone USA
Free 100 M 1:08.03 11 07/24/2025 A AA: 1:07.49 (+0.54s | 0.8%) 3 36 96 202
50 Free
33.04
33.04
100 Free
34.98
1:08.02
100 Free
1:08.02
Back 50 M 40.14 10 07/25/2024 BB A: 37.69 (+2.45s | 6.1%) 5 98 399 794
Back 100 M 1:18.02 11 07/24/2025 AA AAA: 1:14.29 (+3.73s | 4.8%) 4 24 72 154
50 Back
38.72
38.72
100 Back
39.30
1:18.02
100 Back
1:18.02
Breast 50 M 41.00 11 06/12/2025 A AA: 39.99 (+1.01s | 2.5%) 4 41 98 196
Breast 100 M 1:28.46 11 06/12/2025 A AA: 1:27.19 (+1.27s | 1.4%) 5 31 73 139
50 Breast
42.28
42.28
100 Breast
46.18
1:28.46
100 Breast
1:28.46
Fly 50 M 32.41 11 07/24/2025 AA AAA: 31.99 (+0.42s | 1.3%) 1 13 36 74
Fly 100 M 1:15.84 11 07/24/2025 A AA: 1:15.59 (+0.25s | 0.3%) 3 24 63 145
50 Fly
36.24
36.24
100 Fly
39.60
1:15.84
100 Fly
1:15.84
IM 200 M 2:50.49 11 07/24/2025 A AA: 2:45.99 (+4.50s | 2.6%) 5 49 117 226
50 Fly
36.10
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.

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.