Keelyn Underdown

Age: 17 years old
Age Category: 17-18
Team: Sporting Jax Aquatic Club | Florida Swimming

Personal Best

Short course distance

Event Time Age Date Standard Next Standard Florida Swimming Sporting Jax Aquatic Club
Free 50 Y 27.74 16 03/01/2025 BB A: 26.89 (+0.85s | 3.1%) 249 13
Free 100 Y 59.20 16 03/01/2025 BB A: 58.39 (+0.81s | 1.4%) 213 9
50 Free
28.28
28.28
100 Free
30.92
59.20
100 Free
59.20
Free 200 Y 2:09.86 17 10/25/2025 BB A: 2:06.19 (+3.67s | 2.8%) 182 8
50 Free
29.88
29.88
100 Free
32.88
1:02.76
100 Free
1:02.76
150 Free
33.87
1:36.63
200 Free
33.23
2:09.86
100 Free
1:07.10
Free 500 Y 5:53.78 17 10/25/2025 BB A: 5:39.89 (+13.89s | 3.9%) 149 7
50 Free
31.91
31.91
100 Free
35.57
1:07.48
100 Free
1:07.48
150 Free
35.31
1:42.79
200 Free
36.20
2:18.99
100 Free
1:11.51
250 Free
35.92
2:54.91
300 Free
35.88
3:30.79
100 Free
1:11.80
350 Free
36.05
4:06.84
400 Free
35.55
4:42.39
100 Free
1:11.60
450 Free
36.11
5:18.50
500 Free
35.28
5:53.78
100 Free
1:11.39
Back 100 Y 1:18.16 13 02/25/2022 B: 1:13.39 (+4.77s | 6.1%) 280 6
50 Back
39.22
39.22
100 Back
38.94
1:18.16
100 Back
1:18.16
Back 200 Y 2:29.61 17 10/25/2025 B BB: 2:27.39 (+2.22s | 1.5%) 140 6
50 Back
35.80
35.80
100 Back
37.63
1:13.43
100 Back
1:13.43
150 Back
38.22
1:51.65
200 Back
37.96
2:29.61
100 Back
1:16.18
Breast 100 Y 1:23.93 16 03/01/2025 B BB: 1:18.79 (+5.14s | 6.1%) 217 6
50 Breast
39.65
39.65
100 Breast
44.28
1:23.93
100 Breast
1:23.93
Breast 200 Y 2:55.45 17 10/25/2025 B BB: 2:51.49 (+3.96s | 2.3%) 134 4
50 Breast
39.04
39.04
100 Breast
44.70
1:23.74
100 Breast
1:23.74
150 Breast
45.82
2:09.56
200 Breast
45.89
2:55.45
100 Breast
1:31.71
Fly 100 Y 1:27.11 13 10/15/2021 B: 1:13.59 (+13.52s | 15.5%) 300 12
50 Fly
40.24
40.24
100 Fly
46.87
1:27.11
100 Fly
1:27.11
IM 200 Y 2:30.54 16 03/01/2025 BB A: 2:20.19 (+10.35s | 6.9%) 185 8
50 Fly
33.65
33.65
100 Back
37.49
1:11.14
100 IM
1:11.14
150 Breast
45.66
1:56.80
200 Free
33.74
2:30.54
100 IM
1:19.40
IM 400 Y 5:14.57 17 10/25/2025 BB A: 5:00.59 (+13.98s | 4.4%) 102 6
50 Fly
33.35
33.35
100 Fly
38.22
1:11.57
100 Fly
1:11.57
150 Back
40.69
1:52.26
200 Back
40.59
2:32.85
100 Back
1:21.28
250 Breast
45.08
3:17.93
300 Breast
45.60
4:03.53
100 Breast
1:30.68
350 Free
35.90
4:39.43
400 Free
35.14
5:14.57
100 Free
1:11.04

Long course distance

Event Time Age Date Standard Next Standard Florida Swimming Sporting Jax Aquatic Club
Free 50 M 31.89 16 06/20/2025 BB A: 30.69 (+1.20s | 3.8%) 200 12
Free 100 M 1:07.39 16 06/20/2025 BB A: 1:06.59 (+0.80s | 1.2%) 171 9
50 Free
32.33
32.33
100 Free
35.06
1:07.39
100 Free
1:07.39
Free 200 M 2:28.72 16 05/23/2025 BB A: 2:23.69 (+5.03s | 3.4%) 141 9
Free 400 M 5:50.76 13 05/20/2022 B BB: 5:28.19 (+22.57s | 6.4%) 125 7
100 Free
1:26.84
1:26.84
100 Free
1:26.84
200 Free
1:30.87
2:57.71
100 Free
1:30.87
300 Free
1:29.13
4:26.84
100 Free
1:29.13
400 Free
1:23.92
5:50.76
100 Free
1:23.92
Back 100 M 1:21.15 16 06/20/2025 B BB: 1:19.79 (+1.36s | 1.7%) 126 6
50 Back
38.85
38.85
100 Back
42.30
1:21.15
100 Back
1:21.15
Back 200 M 2:52.54 16 06/20/2025 B BB: 2:52.49 (+0.05s | 0.0%) 74 5
50 Back
40.12
40.12
100 Back
42.81
1:22.93
100 Back
1:22.93
150 Back
45.08
2:08.01
200 Back
44.53
2:52.54
100 Back
1:29.61
Breast 100 M 1:30.25 16 05/23/2025 BB A: 1:23.59 (+6.66s | 7.4%) 97 4
Breast 200 M 3:28.56 13 06/03/2022 B BB: 3:14.99 (+13.57s | 6.5%) 84 4
50 Breast
49.21
49.21
100 Breast
52.81
1:42.02
100 Breast
1:42.02
150 Breast
54.69
2:36.71
200 Breast
51.85
3:28.56
100 Breast
1:46.54
Fly 100 M 1:18.95 16 06/20/2025 B BB: 1:17.69 (+1.26s | 1.6%) 148 11
50 Fly
36.28
36.28
100 Fly
42.67
1:18.95
100 Fly
1:18.95
IM 200 M 2:47.22 16 06/20/2025 BB A: 2:42.29 (+4.93s | 2.9%) 117 8
50 Fly
35.49
35.49
100 Back
44.03
1:19.52
100 IM
1:19.52
150 Breast
50.02
2:09.54
200 Free
37.68
2:47.22
100 IM
1:27.70
IM 400 M 6:39.80 13 05/20/2022 B BB: 6:11.69 (+28.11s | 7.0%) 74 3
100 Fly
1:42.80
1:42.80
100 Fly
1:42.80
200 Back
1:42.67
3:25.47
100 Back
1:42.67
300 Breast
1:50.82
5:16.29
100 Breast
1:50.82
400 Free
1:23.51
6:39.80
100 Free
1:23.51

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