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Katherine McMahon

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FemaleCTYMCA Of Greenwich Marlins

Also swam for Unattached (2025–26). Best times below include every one of them.

19 events·68 swims·19 meets·Last raced Jun 7, 2026

Where Katherine ranks

Current best: each age group's best time, against the swimmers in it now.

100 Breast SCY1:12.11
FastestField
CTYMC
Team
1
of 4
›
CT
LSC
30
of 201
›
CT
State
30
of 201
›
Eastern
Zone
495
of 2,948
›
USA
National
1,719
of 10,493
›
Girls 15-16 · best in age group · set Mar 2026Tap a row for the list
Cuts Checker

Select a time standard above to see which events you qualify for.

Best Times
50 Breast
SCY3 swims
BBBAAAAAAAAAA1.26 to AAA
#1,187 USA#1 CTYMC

33.55

2025-12-13

LCM2 swims
BBBAAAAAAAAAA1.40 to A
#25 CT#1,887 USA

40.99

2026-06-06

100 Breast
SCY9 swims
BBBAAAAAAAAAA1.52 to AA
#30 CT#1,719 USA
BEST

1:12.11

2026-03-08

LCM3 swims
BBBAAAAAAAAAA5.38 to A
#44 CT#2,714 USA

1:29.87

2026-06-06

200 Breast
SCY5 swims
BBBAAAAAAAAAA0.10 to A
#26 CT#1,646 USA
BEST

2:39.49

2026-03-01

LCM3 swims
BBBAAAAAAAAAA14.72 to A
#40 CT#2,389 USA

3:16.81

2026-06-07

200 IM
SCY8 swims
BBBAAAAAAAAAA5.62 to A
#4,528 USA#4 CTYMC
BEST

2:28.01

2026-03-07

LCM4 swims
BBBAAAAAAAAAA4.87 to BB
#101 CT#5,445 USA

3:02.36

2026-06-07

400 IM
SCY3 swims
BBBAAAAAAAAAA21.69 to A

5:25.98

2025-10-10

100 Free
SCY4 swims
BBBAAAAAAAAAA3.33 to A
BEST

1:02.22

2025-12-13

LCM3 swims
BBBAAAAAAAAAA5.41 to A
#124 CT#7,094 USA

1:12.60

2026-05-02

50 Free
SCY6 swims
BBBAAAAAAAAAA0.95 to A
BEST

28.24

2025-10-12

LCM2 swims
BBBAAAAAAAAAA1.38 to A
#116 CT#6,348 USA

32.27

2026-06-06

200 Free
SCY3 swims
BBBAAAAAAAAAA1.21 to BB

2:19.60

2025-02-16

100 Back
SCY6 swims
BBBAAAAAAAAAA0.32 to BB
BEST

1:09.71

2025-12-13

LCM1 swim
BBBAAAAAAAAAA0.75 to B

1:27.64

2025-06-07

200 Back
LCM1 swim
BBBAAAAAAAAAA0.20 to B

3:06.99

2025-05-17

100 Fly
SCY1 swim
BBBAAAAAAAAAA6.17 to B

1:20.56

2026-01-18

200 Fly
SCY1 swim
BBBAAAAAAAAAA20.76 to B

3:06.55

2025-02-04

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Explore

USA Swimming time standards — 15-16 Girls

See how Katherine's times rank nationally: 50 Breast100 Breast200 Breast200 IM400 IM50 Breast (LCM)
Other YMCA Of Greenwich Marlins swimmers around Katherine's age: Charlotte TaitJada SaidmuratovHenry DeHavenNicholas Da SilvaCalder Kelly