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Renzhi Dong

Age: 10 years old
Age Category: 10 & under
Team: Charles River Aquatics | New England Swimming

Personal Best

Short course distance

Event Time Age Date Standard Next Standard Charles River Aquatics New England Swimming Eastern Zone USA
Free 50 Y 31.30 10 02/13/2026 BB A: 31.09 (+0.21s | 0.7%) 2 29 204 1,000+
Free 100 Y 1:10.40 Analysis 10 12/11/2025 BB A: 1:09.79 (+0.61s | 0.9%) 5 34 222 1,000+
50 Free
33.96
33.96
100 Free
36.44
1:10.40
100 Free
1:10.40
Free 200 Y 2:31.68 Analysis 10 12/11/2025 BB A: 2:31.59 (+0.09s | 0.1%) 2 21 165 686
50 Free
34.60
34.60
100 Free
39.87
1:14.47
100 Free
1:14.47
150 Free
40.10
1:54.57
200 Free
37.11
2:31.68
100 Free
1:17.21
Free 500 Y 6:55.81 Analysis 10 11/14/2025 BB A: 6:43.39 (+12.42s | 3.0%) 3 31 147 626
50 Free
34.74
34.74
100 Free
41.52
1:16.26
100 Free
1:16.26
150 Free
42.73
1:58.99
200 Free
43.17
2:42.16
100 Free
1:25.90
250 Free
43.96
3:26.12
300 Free
41.78
4:07.90
100 Free
1:25.74
350 Free
43.10
4:51.00
400 Free
43.47
5:34.47
100 Free
1:26.57
450 Free
41.83
6:16.30
500 Free
39.51
6:55.81
100 Free
1:21.34
Back 50 Y 36.00 10 02/13/2026 A AA: 35.79 (+0.21s | 0.6%) 2 20 130 502
Back 100 Y 1:17.84 Analysis 10 02/13/2026 A AA: 1:16.09 (+1.75s | 2.2%) 2 17 136 540
50 Back
38.49
38.49
100 Back
39.35
1:17.84
100 Back
1:17.84
Breast 50 Y 38.81 10 12/11/2025 AA AAA: 38.29 (+0.52s | 1.3%) 2 6 36 119
Breast 100 Y 1:24.63 Analysis 10 11/14/2025 AA AAA: 1:22.69 (+1.94s | 2.3%) 1 10 49 384
50 Breast
40.36
40.36
100 Breast
44.27
1:24.63
100 Breast
1:24.63
Fly 50 Y 33.60 10 03/13/2026 AA AAA: 32.59 (+1.01s | 3.0%) 2 12 91 273
Fly 100 Y 1:17.92 Analysis 10 12/11/2025 AA AAA: 1:14.59 (+3.33s | 4.3%) 2 16 101 453
50 Fly
36.72
36.72
100 Fly
41.20
1:17.92
100 Fly
1:17.92
IM 100 Y 1:16.03 Analysis 10 12/11/2025 AA AAA: 1:13.09 (+2.94s | 3.9%) 2 9 70 229
50 IM
36.01
36.01
100 IM
40.02
1:16.03
100 IM
1:16.03
IM 200 Y 2:43.07 Analysis 10 12/11/2025 AA AAA: 2:38.39 (+4.68s | 2.9%) 2 12 70 374
50 Fly
37.07
37.07
100 Back
43.43
1:20.50
100 IM
1:20.50
150 Breast
45.27
2:05.77
200 Free
37.30
2:43.07
100 IM
1:22.57

Long course distance

Event Time Age Date Standard Next Standard Charles River Aquatics New England Swimming Eastern Zone USA
Free 50 M 34.82 10 06/26/2026 A AA: 34.39 (+0.43s | 1.2%) 2 15 50 351
Free 100 M 1:21.61 Analysis 10 05/08/2026 BB A: 1:20.19 (+1.42s | 1.7%) 3 31 97 681
Free 200 M 2:49.04 Analysis 10 06/26/2026 A AA: 2:46.09 (+2.95s | 1.7%) 2 14 43 326
50 Free
39.10
39.10
100 Free
44.25
1:23.35
100 Free
1:23.35
150 Free
44.18
2:07.53
200 Free
41.51
2:49.04
100 Free
1:25.69
Back 50 M 39.06 10 05/08/2026 AA AAA: 38.99 (+0.07s | 0.2%) 1 5 18 141
Back 100 M 1:25.00 Analysis 10 06/26/2026 AA AAA: 1:24.09 (+0.91s | 1.1%) 1 8 21 134
50 Back
41.68
41.68
100 Back
43.32
1:25.00
100 Back
1:25.00
Breast 50 M 44.61 10 06/26/2026 AA AAA: 43.59 (+1.02s | 2.3%) 1 7 12 108
Breast 100 M 1:37.48 Analysis 10 05/08/2026 AA AAA: 1:36.29 (+1.19s | 1.2%) 1 6 12 104
Fly 50 M 38.14 10 06/26/2026 AA AAA: 36.59 (+1.55s | 4.1%) 2 13 38 246
Fly 100 M 1:31.78 Analysis 10 05/08/2026 A AA: 1:30.69 (+1.09s | 1.2%) 2 14 41 261
IM 200 M 3:06.24 Analysis 10 05/08/2026 AA AAA: 3:00.79 (+5.45s | 2.9%) 2 13 32 186

Above are the fastest times that Renzhi Dong has achieved in his swimming career. For each event, you can find Renzhi's best time, the corresponding time standard, as well as how much faster Renzhi needs to be to reach the next level. The last columns provide Renzhi rankings at the team and LSC levels. These rankings are based on the Renzhi'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.