Swimmer profile

Mackenzie O'Brien

Female11-12Tollefson SwimmingPV · EASTERN

Performance Progression Goals Time Standards Meets

Standards achieved

tap to filter events

Age group

11-12

Course

★ Highlight Events

100 Breast LCM

Standard	Cut	Gap
B✓	1:50.39	−15.44
BB✓	1:42.19	−7.24
A	1:33.99	+0.96
AA	1:29.99	+4.96
AAA	1:25.89	+9.06
AAAA	1:21.79	+13.16

PBAAA

1:34.95

2026 PV The 47th Annual Maryland State LC Swim Championships

May 30, 2026

LSC

of 119

200 IM LCM

Standard	Cut	Gap
B✓	3:30.59	−15.83
BB✓	3:15.59	−0.83
A	3:00.59	+14.17
AA	2:52.99	+21.77
AAA	2:45.49	+29.27
AAAA	2:37.99	+36.77

PBA

3:14.76

2026 PV The 47th Annual Maryland State LC Swim Championships

May 29, 2026

LSC

of 98

50 Free LCM

Standard	Cut	Gap
B✓	38.49	−3.66
BB✓	35.89	−1.06
A	33.19	+1.64
AA	31.89	+2.94
AAA	30.49	+4.34
AAAA	29.19	+5.64

PBAA

34.83

2026 PV PAC Dive into Spring LC

Apr 25, 2026

LSC

of 151

Event

50 Free LCM

Standard	Cut	Gap
B✓	38.49	−3.66
BB✓	35.89	−1.06
A	33.19	+1.64
AA	31.89	+2.94
AAA	30.49	+4.34
AAAA	29.19	+5.64

PBAA

34.83

2026 PV PAC Dive into Spring LC

Apr 25, 2026

LSC

of 151

100 Free LCM

Standard	Cut	Gap
B✓	1:25.59	−3.83
BB	1:19.49	+2.27
A	1:13.39	+8.37
AA	1:10.29	+11.47
AAA	1:07.19	+14.57
AAAA	1:04.19	+17.57

PBA

1:21.76

2026 PV The 47th Annual Maryland State LC Swim Championships

May 31, 2026

LSC

of 142

100 Back LCM

Standard	Cut	Gap
B✓	1:40.59	−0.52
BB	1:32.69	+7.38
A	1:24.79	+15.28
AA	1:20.79	+19.28
AAA	1:16.89	+23.18
AAAA	1:12.89	+27.18

PBBB

1:40.07

2025 PV LC Open 1 - PAC

Jun 22, 2025

LSC

of 123

50 Breast LCM

Standard	Cut	Gap
B✓	49.79	−8.56
BB✓	46.19	−4.96
A✓	42.69	−1.46
AA	40.89	+0.34
AAA	39.09	+2.14
AAAA	37.39	+3.84

PBA

41.23

2026 PV MCSL Coaches Long Course Invitational

Jul 7, 2026

LSC

of 168

100 Breast LCM

Standard	Cut	Gap
B✓	1:50.39	−15.44
BB✓	1:42.19	−7.24
A	1:33.99	+0.96
AA	1:29.99	+4.96
AAA	1:25.89	+9.06
AAAA	1:21.79	+13.16

PBAAA

1:34.95

2026 PV The 47th Annual Maryland State LC Swim Championships

May 30, 2026

LSC

of 119

50 Fly LCM

Standard	Cut	Gap
B✓	41.79	−0.64
BB	38.79	+2.36
A	35.79	+5.36
AA	34.29	+6.86
AAA	32.89	+8.26
AAAA	31.39	+9.76

PBA

41.15

2026 PV The 47th Annual Maryland State LC Swim Championships

May 31, 2026

LSC

of 148

200 IM LCM

Standard	Cut	Gap
B✓	3:30.59	−15.83
BB✓	3:15.59	−0.83
A	3:00.59	+14.17
AA	2:52.99	+21.77
AAA	2:45.49	+29.27
AAAA	2:37.99	+36.77

PBA

3:14.76

2026 PV The 47th Annual Maryland State LC Swim Championships

May 29, 2026

LSC

of 98