HalfRuns
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Karin Ma

FemaleNew York2006–2026

37

Total Finishes

17

Different Races

2

States (4%)

1:49:44

PR (8:23/mi)

2:11:04

Average

+0:21:19

Slower (first to last)

Medal House

2009

NYRR Fred Lebow Half Marathon

1:59:59
#2643 overall#722 gender
2009

The Unforgettable Staten Island Half Marathon!

2:00:07
#2280 overall#628 gender
2009

United Airlines NYC Half

2:02:19
#4048 overall#1380 gender
2008

The Bay Ridge Half Marathon!

2:00:13
#3469 overall#1086 gender
2008

United Airlines NYC Half

2:07:42
#5934 overall#2243 gender
2008

The Unforgettable Staten Island Half Marathon!

2:11:30
#2619 overall#826 gender
2008

NYCRUNS Brooklyn Ice Cream Social Half Marathon

2:21:48
#2377 overall#799 gender
2008

NYRR Fred Lebow Half Marathon

2:24:30
#4491 overall#1595 gender
2007

The Unforgettable Staten Island Half Marathon!

1:49:44
#1042 overall#181 gender
2007

NYCRUNS Brooklyn Ice Cream Social Half Marathon

1:57:24
#1664 overall#378 gender
2007

The Bay Ridge Half Marathon!

1:58:32
#2574 overall#684 gender
2006

United Airlines NYC Half

2:08:39
#6647 overall#2570 gender

Performance Timeline

PR 1:49:442006200720072007200820082008200820082009200920092009201020102010201120132014201920192021202320232024202420242025202520252025202520252025202520262026

Complete Race Log

YearRaceStateTimePlace
2026Jersey City Summer Half, 10K, and 5KJersey CityNJ2:10:16#77
2026The Jersey City Spring Half Marathon, 10K, 5KJersey CityNJ2:29:58#192
2025Sri Chinmoy 5K, Half-Marathon & Relay (May)New YorkNY2:03:08#41
2025The Brooklyn Beach Half, 10K, and 5KBrooklynNY2:04:59#74
2025NYCRUNS Brooklyn Ice Cream Social Half MarathonBrooklynNY2:06:20#12010
2025The Jersey City Spring Half Marathon, 10K, 5KJersey CityNJ2:09:10#87
2025The Brooklyn Queens Brewery Express Half MarathonGlendaleNY2:10:21#106
2025The JC Valentine's Half Marathon, 10K, 5KJersey CityNJ2:11:56#40
2025NSRF Fallback Half MarathonEast IslipNY2:31:14#26
2025The JC GreenJersey CityNJ2:39:21#166
2024Liberty Waterfront Half Marathon and 5K RunJersey CityNJ2:01:27#1573
2024March Madness Half, 10K, 5KJersey CityNJ2:14:41#84
2024NYCRUNS Brooklyn Ice Cream Social Half MarathonBrooklynNY2:15:55#1146
2023Liberty Waterfront Half Marathon and 5K RunJersey CityNJ2:04:04#1199
2023NYCRUNS Brooklyn Ice Cream Social Half MarathonBrooklynNY2:17:39#8106
2021The Brooklyn Beach Half, 10K, and 5KBrooklynNY2:17:13#37
2019The New Jersey Halloween Half Marathon, 10K, 5KJersey CityNJ2:13:14#102
2019Liberty Waterfront Half Marathon and 5K RunJersey CityNJ2:20:08#1785
2014The Bay Ridge Half Marathon!BrooklynNY2:03:03#13547
2013The Bay Ridge Half Marathon!BrooklynNY2:01:47#12099
2011The Bay Ridge Half Marathon!BrooklynNY1:58:04#2877
2010NYRR Fred Lebow Half MarathonNew YorkNY2:01:04#3475
2010The Unforgettable Staten Island Half Marathon!Staten IslandNY2:02:32#2917
2010The North Face® Endurance Challenge - New YorkBear MountainNY2:54:17#376
2009NYRR Fred Lebow Half MarathonNew YorkNY1:59:59#2643
2009The Unforgettable Staten Island Half Marathon!Staten IslandNY2:00:07#2280
2009United Airlines NYC HalfNew YorkNY2:02:19#4048
2009The Bay Ridge Half Marathon!BrooklynNY2:11:26#6722
2008The Bay Ridge Half Marathon!BrooklynNY2:00:13#3469
2008United Airlines NYC HalfNew YorkNY2:07:42#5934
2008The Unforgettable Staten Island Half Marathon!Staten IslandNY2:11:30#2619
2008NYCRUNS Brooklyn Ice Cream Social Half MarathonBrooklynNY2:21:48#2377
2008NYRR Fred Lebow Half MarathonNew YorkNY2:24:30#4491
2007The Unforgettable Staten Island Half Marathon!Staten IslandNY1:49:44#1042
2007NYCRUNS Brooklyn Ice Cream Social Half MarathonBrooklynNY1:57:24#1664
2007The Bay Ridge Half Marathon!BrooklynNY1:58:32#2574
2006United Airlines NYC HalfNew YorkNY2:08:39#6647

States Raced

1 race 2 races 3-4 races 5+ races

State Breakdown

NYNew York
27 races
NJNew Jersey
10 races

50-State Challenge

2/ 50 states

48 states to go