swimstats

Brennan Duffy

Mage 12EZVARAYSVAS

308 plausible swims · 40 meets · 2021-10-16 → 2026-08-01

Personal records

EventCourseBest CutDateMeet
25 Freestyle SCY 14.35 2023-01-22 2023 HNVR Duck Bowlvenue
50 Freestyle SCY 26.54 AA+0.75s to AAA·+4.15s to Sectionals 2026-03-14 2026 Virginia Swimming SC Age Group Championsvenue
100 Freestyle SCY 58.58 AA+2.39s to AAA·+10.09s to Sectionals 2026-03-15 2026 Virginia Swimming SC Age Group Championsvenue
200 Freestyle SCY 2:06.52 AA+3.93s to AAA·+20.23s to Sectionals 2026-02-15 2026 Northern District 12&Under Championshipvenue
500 Freestyle SCY 5:42.30 AA+12.31s to AAA·+54.91s to Sectionals 2026-03-12 2026 Virginia Swimming SC Age Group Championsvenue
25 Backstroke SCY 18.58 2023-02-19 2023 North District 12 & Under Championshipvenue
50 Backstroke SCY 30.54 AA+0.85s to AAA·+6.85s to Futures 2026-01-18 2026 Duck Bowlvenue
100 Backstroke SCY 1:07.22 A+1.23s to AA·+12.73s to Sectionals 2026-01-17 2026 Duck Bowlvenue
200 Backstroke SCY 2:25.55 A+3.56s to AA·+26.96s to Sectionals 2026-03-13 2026 Virginia Swimming SC Age Group Championsvenue
25 Breaststroke SCY 22.03 2023-02-19 2023 North District 12 & Under Championshipvenue
50 Breaststroke SCY 37.42 BB+0.73s to A·+11.13s to Futures 2026-01-11 2026 RAYS Jeff Rouse Invitationalvenue
100 Breaststroke SCY 1:21.69 BB+3.30s to A·+20.20s to Sectionals 2026-02-15 2026 Northern District 12&Under Championshipvenue
200 Breaststroke SCY 2:56.01 BB+7.62s to A·+41.02s to Sectionals 2026-02-14 2026 Northern District 12&Under Championshipvenue
25 Butterfly SCY 17.07 2023-02-18 2023 North District 12 & Under Championshipvenue
50 Butterfly SCY 28.76 AA+0.57s to AAA·+5.87s to Futures 2025-12-07 2025 RAYS Nutcracker Classic - copiedvenue
100 Butterfly SCY 1:04.89 AA+2.40s to AAA·+11.70s to Sectionals 2026-03-13 2026 Virginia Swimming SC Age Group Championsvenue
200 Butterfly SCY 2:32.82 BB+1.33s to A·+31.63s to Sectionals 2026-02-14 2026 Northern District 12&Under Championshipvenue
100 Individual Medley SCY 1:07.78 A+0.79s to AA 2026-03-15 2026 Virginia Swimming SC Age Group Championsvenue
200 Individual Medley SCY 2:28.50 A+2.91s to AA·+29.11s to Sectionals 2026-01-11 2026 RAYS Jeff Rouse Invitationalvenue
400 Individual Medley SCY 5:12.59 A+2.60s to AA·+57.50s to Sectionals 2026-02-13 2026 Northern District 12&Under Championshipvenue
50 Freestyle LCM 29.50 AA+0.11s to AAA·+4.01s to Sectionals 2026-07-18 2026 Virginia Swimming LC Age Group Championsvenue
100 Freestyle LCM 1:06.56 AA+2.07s to AAA·+11.07s to Sectionals 2026-07-19 2026 Virginia Swimming LC Age Group Championsvenue
200 Freestyle LCM 2:22.19 AA+1.40s to AAA·+20.90s to Sectionals 2026-07-17 2026 Virginia Swimming LC Age Group Championsvenue
400 Freestyle LCM 5:07.34 AA+7.85s to AAA·+49.75s to Sectionals 2026-06-14 2026 SwimRVA Summer Invitationalfast pool
1500 Freestyle LCM 20:51.70 AA+32.41s to AAA·+212.71s to Sectionals 2026-05-01 2026 Helen Wang Sunflower Classicvenue
50 Backstroke LCM 34.35 AAA+1.66s to AAAA·+6.46s to Futures 2026-08-01 2026 EZ LC Age Group Championshipfast pool
100 Backstroke LCM 1:15.02 AA+0.73s to AAA·+13.03s to Sectionals 2026-07-19 2026 Virginia Swimming LC Age Group Championsvenue
200 Backstroke LCM 2:49.76 A+3.07s to AA·+34.97s to Sectionals 2026-06-06 HNVR Storm Surge 2026venue
50 Breaststroke LCM 40.79 A+0.80s to AA·+9.90s to Futures 2026-06-26 2026 VSI LC Northern District Champsvenue
100 Breaststroke LCM 1:34.24 BB+2.95s to A·+24.55s to Sectionals 2026-06-27 2026 VSI LC Northern District Champsvenue
50 Butterfly LCM 31.10 AAA+0.81s to AAAA·+4.81s to Futures 2026-06-05 HNVR Storm Surge 2026venue
100 Butterfly LCM 1:18.12 A+2.53s to AA·+17.93s to Sectionals 2026-06-14 2026 SwimRVA Summer Invitationalfast pool
200 Butterfly LCM 3:09.73 BB+13.64s to A·+53.44s to Sectionals 2026-06-12 2026 SwimRVA Summer Invitationalfast pool
200 Individual Medley LCM 2:49.11 A+2.62s to AA·+32.92s to Sectionals 2026-06-07 HNVR Storm Surge 2026venue
400 Individual Medley LCM 6:12.47 A+12.78s to AA·+82.58s to Sectionals 2026-06-13 2026 SwimRVA Summer Invitationalfast pool

Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 12.

National cuts (Sectionals → Nationals) are the current-season meet qualifying times for the swimmer's zone and age group; ✓ marks the hardest cut already achieved.

Pool tags are a venue speed heuristic (median deviation of all swims there vs each swimmer's typical time) — see the venue page for the method.

Fastest relay legs

LegCourseTime StartRelayDateMeet
50 Freestyle SCY 28.47 flat 200 Free Relay 2025-11-08 2025 PWSC Fall Aqua-Fest
50 Freestyle SCY 26.54 flying 200 Free Relay (leg 3) 2026-03-14 2026 Virginia Swimming SC Age Group Champions
50 Freestyle SCY 31.65 flying 200 Medley Relay (leg 4) 2024-02-18 2024 North District 9-12 Championship
100 Freestyle SCY 59.42 flat 400 Free Relay 2026-03-15 2026 Virginia Swimming SC Age Group Champions
100 Freestyle SCY 39.81 flying 400 Free Relay (leg 3) 2023-03-12 2023 Virginia Swimming SC Age Group Champions
50 Backstroke SCY 31.80 flat 200 Medley Relay 2025-11-09 2025 PWSC Fall Aqua-Fest
100 Backstroke SCY 1:07.99 flat 400 Medley Relay 2025-12-05 2025 RAYS Nutcracker Classic - copied
50 Breaststroke SCY 38.01 flying 200 Medley Relay (leg 2) 2026-02-15 2026 Northern District 12&Under Championship
50 Butterfly SCY 28.87 flying 200 Medley Relay (leg 3) 2026-03-14 2026 Virginia Swimming SC Age Group Champions
100 Butterfly SCY 1:08.31 flying 400 Medley Relay (leg 3) 2026-03-13 2026 Virginia Swimming SC Age Group Champions
50 Freestyle LCM 30.08 flat 200 Free Relay 2026-06-14 2026 SwimRVA Summer Invitational
50 Freestyle LCM 24.45 flying 200 Free Relay (leg 4) 2023-06-18 SwimRVA Summer Invitational
100 Freestyle LCM 1:08.02 flying 400 Free Relay (leg 3) 2026-07-19 2026 Virginia Swimming LC Age Group Champions
50 Backstroke LCM 34.06 flat 200 Medley Relay 2026-07-18 2026 Virginia Swimming LC Age Group Champions
100 Backstroke LCM 1:15.06 flat 400 Medley Relay 2026-07-17 2026 Virginia Swimming LC Age Group Champions
50 Breaststroke LCM 41.60 flying 200 Medley Relay (leg 2) 2026-06-13 2026 SwimRVA Summer Invitational

Reconstructed from relay split marks. Flat = lead-off (comparable to individual times); flying starts run ~0.5–0.7s fast and are not PRs.

IMX / IMR

IMX 11-12 · LCM

3577 points (5/5 events)

EventTime Points
400 FR LCM 5:07.34 804
100 BK LCM 1:15.02 826
100 BR LCM 1:34.24 588
100 FL LCM 1:18.12 653
200 IM LCM 2:49.11 706

IMR 11-12 · LCM

4019 points (5/5 events)

EventTime Points
200 FR LCM 2:22.19 844
50 BK LCM 34.35 854
50 BR LCM 40.79 692
50 FL LCM 31.10 923
200 IM LCM 2:49.11 706

Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.

PR splits

100 Freestyle SCY 58.58

28.34
30.24

Front half 28.34s · back half 30.24s

200 Freestyle SCY 2:06.52

29.07
32.46
33.22
31.77

Front half 61.53s · back half 64.99s

500 Freestyle SCY 5:42.30

29.87
33.56
34.36
34.25
35.58
35.33
35.57
35.45
35.00
33.33

Front half 167.62s · back half 174.68s

100 Backstroke SCY 1:07.22

32.87
34.35

Front half 32.87s · back half 34.35s

200 Backstroke SCY 2:25.55

33.23
37.24
38.57
36.51

Front half 70.47s · back half 75.08s

100 Breaststroke SCY 1:21.69

38.31
43.38

Front half 38.31s · back half 43.38s

200 Breaststroke SCY 2:56.01

37.57
45.54
47.92
44.98

Front half 83.11s · back half 92.90s

100 Butterfly SCY 1:04.89

30.07
34.82

Front half 30.07s · back half 34.82s

200 Butterfly SCY 2:32.82

31.93
40.27
40.51
40.11

Front half 72.20s · back half 80.62s

100 Individual Medley SCY 1:07.78

30.38
37.40

Front half 30.38s · back half 37.40s

200 Individual Medley SCY 2:28.50

30.99
37.90
46.15
33.46

Front half 68.89s · back half 79.61s

400 Individual Medley SCY 5:12.59

32.37
39.13
39.85
37.61
46.71
48.51
34.86
33.55

Front half 148.96s · back half 163.63s

200 Freestyle LCM 2:22.19 RT 0.62s

32.44
36.72
36.97
36.06

Front half 69.16s · back half 73.03s

400 Freestyle LCM 5:07.34

34.21
38.13
38.68
39.40
39.17
40.28
39.24
38.23

Front half 150.42s · back half 156.92s

1500 Freestyle LCM 20:51.70

35.54
39.28
38.27
46.33
38.90
47.44
43.95
41.51
42.57
41.03
41.77
40.09
42.20
40.04
42.19
40.65
42.21
41.26
43.02
42.13
43.24
41.31
44.41
42.41
45.11
41.47
42.51
40.36
41.65
38.85

Front half 621.11s · back half 630.59s

100 Backstroke LCM 1:15.02 RT 0.71s

36.50
38.52

Front half 36.50s · back half 38.52s

200 Backstroke LCM 2:49.76

40.51
44.07
43.74
41.44

Front half 84.58s · back half 85.18s

100 Breaststroke LCM 1:34.24

43.92
50.32

Front half 43.92s · back half 50.32s

100 Butterfly LCM 1:18.12

35.42
42.70

Front half 35.42s · back half 42.70s

200 Butterfly LCM 3:09.73

37.79
46.36
51.17
54.41

Front half 84.15s · back half 105.58s

200 Individual Medley LCM 2:49.11

35.11
43.20
55.24
35.56

Front half 78.31s · back half 90.80s

400 Individual Medley LCM 6:12.47

38.53
47.36
48.81
45.38
56.22
58.56
40.00
37.61

Front half 180.08s · back half 192.39s

Reaction time

fastest 0.52s average 0.651s slowest 1.03s 12 electronic starts

Start reaction over time faster starts higher

From electronically-timed starts only (~2% of corpus swims carry a reaction time). PRs with a recorded reaction show an RT chip in the splits section above.

Swim history

Every recorded swim, newest first
DateEventCourse TimeAge RoundMeet

Individual swims with a recorded date and time — including disqualifications — plus reconstructed relay legs (marked). Assembled in the browser from this page’s data.

Progression

Faster times are higher. One card per event, all courses & history.

25 Freestyle SCY 14.35 8 swims
50 Freestyle SCY 26.54 23 swims
100 Freestyle SCY 58.58 17 swims
200 Freestyle SCY 2:06.52 12 swims
500 Freestyle SCY 5:42.30 5 swims
25 Backstroke SCY 18.58 5 swims
50 Backstroke SCY 30.54 20 swims
100 Backstroke SCY 1:07.22 11 swims
200 Backstroke SCY 2:25.55 3 swims
25 Breaststroke SCY 22.03 5 swims
50 Breaststroke SCY 37.42 7 swims
100 Breaststroke SCY 1:21.69 6 swims
200 Breaststroke SCY 2:56.01 2 swims
25 Butterfly SCY 17.07 5 swims
50 Butterfly SCY 28.76 13 swims
100 Butterfly SCY 1:04.89 11 swims
200 Butterfly SCY 2:32.82 3 swims
100 Individual Medley SCY 1:07.78 13 swims
200 Individual Medley SCY 2:28.50 7 swims
400 Individual Medley SCY 5:12.59 1 swim
50 Freestyle LCM 29.50 15 swims
100 Freestyle LCM 1:06.56 14 swims
200 Freestyle LCM 2:22.19 12 swims
400 Freestyle LCM 5:07.34 4 swims
1500 Freestyle LCM 20:51.70 1 swim
50 Backstroke LCM 34.35 15 swims
100 Backstroke LCM 1:15.02 15 swims
200 Backstroke LCM 2:49.76 3 swims
50 Breaststroke LCM 40.79 11 swims
100 Breaststroke LCM 1:34.24 7 swims
50 Butterfly LCM 31.10 12 swims
100 Butterfly LCM 1:18.12 6 swims
200 Butterfly LCM 3:09.73 1 swim
200 Individual Medley LCM 2:49.11 7 swims
400 Individual Medley LCM 6:12.47 1 swim