Brian Guo

Age: 12 years old
Age Category: 11-12
Team: Long Island Aquatic Club | Metropolitan Swimming

Personal Best

Short course distance

Event Time Age Date Standard Next Standard Long Island Aquatic Club Metropolitan Swimming Eastern Zone USA
Free 50 Y 27.44 11 12/11/2025 A AA: 26.99 (+0.45s | 1.6%) 4 51 266 1,000+
Free 100 Y 1:00.78 11 12/11/2025 A AA: 58.69 (+2.09s | 3.4%) 9 70 333 1,000+
50 Free
29.35
29.35
100 Free
31.43
1:00.78
100 Free
1:00.78
Free 200 Y 2:12.48 11 12/11/2025 A AA: 2:08.19 (+4.29s | 3.2%) 8 53 262 995
50 Free
30.34
30.34
100 Free
34.11
1:04.45
100 Free
1:04.45
150 Free
34.67
1:39.12
200 Free
33.36
2:12.48
100 Free
1:08.03
Free 500 Y 5:51.07 11 12/11/2025 A AA: 5:44.99 (+6.08s | 1.7%) 9 52 220 749
50 Free
31.15
31.15
100 Free
34.49
1:05.64
100 Free
1:05.64
150 Free
35.51
1:41.15
200 Free
36.09
2:17.24
100 Free
1:11.60
250 Free
36.20
2:53.44
300 Free
35.59
3:29.03
100 Free
1:11.79
350 Free
36.35
4:05.38
400 Free
35.89
4:41.27
100 Free
1:12.24
450 Free
35.54
5:16.81
500 Free
34.26
5:51.07
100 Free
1:09.80
Back 50 Y 33.83 11 11/21/2025 BB A: 32.69 (+1.14s | 3.4%) 16 103 542 1,000+
Back 100 Y 1:10.92 11 11/21/2025 BB A: 1:09.29 (+1.63s | 2.3%) 12 75 394 1,000+
50 Back
34.63
34.63
100 Back
36.29
1:10.92
100 Back
1:10.92
Back 200 Y 2:30.04 11 11/21/2025 BB A: 2:28.19 (+1.85s | 1.2%) 8 36 211 568
50 Back
35.09
35.09
100 Back
38.08
1:13.17
100 Back
1:13.17
150 Back
39.42
1:52.59
200 Back
37.45
2:30.04
100 Back
1:16.87
Breast 50 Y 46.35 10 03/21/2024 B: 43.49 (+2.86s | 6.2%) 58 373 1,000+ 1,000+
Breast 100 Y 1:24.25 11 10/25/2025 BB A: 1:18.39 (+5.86s | 7.0%) 20 116 548 1,000+
50 Breast
40.09
40.09
100 Breast
44.16
1:24.25
100 Breast
1:24.25
Breast 200 Y 2:53.11 11 11/21/2025 BB A: 2:48.39 (+4.72s | 2.7%) 10 53 237 624
50 Breast
40.28
40.28
100 Breast
43.89
1:24.17
100 Breast
1:24.17
150 Breast
44.89
2:09.06
200 Breast
44.05
2:53.11
100 Breast
1:28.94
Fly 50 Y 30.20 11 12/11/2025 A AA: 29.69 (+0.51s | 1.7%) 5 43 208 710
Fly 100 Y 1:07.01 11 12/11/2025 A AA: 1:05.89 (+1.12s | 1.7%) 4 30 154 653
50 Fly
32.09
32.09
100 Fly
34.92
1:07.01
100 Fly
1:07.01
Fly 200 Y 2:33.83 11 11/07/2025 BB A: 2:31.39 (+2.44s | 1.6%) 5 28 110 313
50 Fly
34.15
34.15
100 Fly
39.25
1:13.40
100 Fly
1:13.40
150 Fly
40.28
1:53.68
200 Fly
40.15
2:33.83
100 Fly
1:20.43
IM 100 Y 1:10.10 11 12/11/2025 BB A: 1:09.99 (+0.11s | 0.2%) 5 48 269 899
50 IM
31.90
31.90
100 IM
38.20
1:10.10
100 IM
1:10.10
IM 200 Y 2:27.55 11 12/11/2025 A AA: 2:25.59 (+1.96s | 1.3%) 8 44 203 719
50 Fly
32.09
32.09
100 Back
36.78
1:08.87
100 IM
1:08.87
150 Breast
45.75
1:54.62
200 Free
32.93
2:27.55
100 IM
1:18.68

Long course distance

Event Time Age Date Standard Next Standard Long Island Aquatic Club Metropolitan Swimming Eastern Zone USA

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