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KO
Kathryn O'Brien
FemaleNew York2001–2025
37
Total Finishes
33
Different Races
14
States (28%)
1:46:36
PR (8:08/mi)
2:15:37
Average
+0:08:16
Slower (first to last)
Medal House
2010
Say No to Drugs Half Marathon & 5K
2:36:17
#206 overall#91 gender
2010
Sunrise Marathon 5K/10K/13.1 SAN FRANCISCO
2:41:25
#6474 overall#3536 gender
2010
San Francisco Marathon
2:41:25
#6474 overall#3536 gender
2010
Thanksgiving Day Half Marathon
2:48:05
#8079 overall#3750 gender
2008
Parks Half Marathon
2:18:37
#1413 overall#577 gender
2007
Women's Half Marathon
1:52:11
#425 overall#424 gender
2007
Rock ‘n’ Roll Philadelphia Half Marathon
1:54:29
#4493 overall#1330 gender
2007
2027 WALT DISNEY WORLD® Marathon Weekend presented by State Farm® With A Running Passion
2:45:46
#7127 overall#3652 gender
2006
Rock 'n' Roll Chicago Half Marathon
1:52:39
#2078 overall#549 gender
2006
Chicago Distance Classic -
1:52:39
#2079 overall#549 gender
2004
Carlsbad Marathon
2:31:43
#3321 overall#1578 gender
2001
Santa Barbara Half Marathon & 5K
1:55:47
#424 overall#134 gender
Performance Timeline
Complete Race Log
| Year | Race | State | Time | Place |
|---|---|---|---|---|
| 2025 | DC Half RacesWashington | DC | 2:04:03 | #2967 |
| 2024 | NYCRUNS Brooklyn Ice Cream Social Half MarathonBrooklyn | NY | 2:05:02 | #9971 |
| 2024 | Philadelphia MarathonPhiladelphia | PA | 2:05:54 | #4864 |
| 2022 | Estes Park Marathon | — | 2:19:41 | #177 |
| 2019 | Gorges Ithaca Half MarathonIthaca | NY | 1:46:36 | #142 |
| 2018 | Syracuse Half MarathonSyracuse | NY | 1:49:28 | #589 |
| 2018 | Maine Marathon, Half Marathon and Marathon RelayPortland | ME | 1:57:07 | #602 |
| 2018 | Rock 'n' Roll Half Marathon San FranciscoSan Francisco | CA | 2:19:06 | #2518 |
| 2017 | Syracuse Half MarathonSyracuse | NY | 2:01:18 | #1078 |
| 2015 | Lucky 5K/10K/Half Marathon - St. GeorgeSaint George | UT | 2:09:17 | #680 |
| 2015 | Snow Canyon Half MarathonSaint George | UT | 2:19:33 | #1218 |
| 2015 | Southern Utah Half MarathonWashington | UT | 2:28:52 | #655 |
| 2015 | 2025 500 Festival Running EventsIndianapolis | IN | 2:32:36 | #12729 |
| 2015 | Rock ‘n' Roll Washington DCWashington | DC | 2:54:31 | #13495 |
| 2014 | Newport MarathonNewport | RI | 1:51:27 | #587 |
| 2014 | Fayetteville Half MarathonFayetteville | AR | 1:57:20 | #146 |
| 2014 | Snow Canyon Half MarathonSaint George | UT | 2:10:42 | #836 |
| 2014 | Lincoln MarathonLincoln | NE | 2:14:31 | #4624 |
| 2014 | Rock 'n' Roll Las VegasLas Vegas | NV | 2:21:34 | #9931 |
| 2014 | Frederick Running FestivalFrederick | MD | 2:26:37 | #2943 |
| 2014 | 2026 National Women's Half Marathon and 8KWashington | DC | 2:29:28 | #8774 |
| 2014 | Rock 'n' Roll Savannah Marathon & 1/2 MarathonSavannah | GA | 2:41:26 | #7746 |
| 2013 | Omaha MarathonOmaha | NE | 2:10:39 | #1207 |
| 2013 | Frederick Running FestivalFrederick | MD | 2:13:14 | #2273 |
| 2013 | Parks Half MarathonRockville | MD | 2:22:12 | #1829 |
| 2013 | Detroit Free Press MarathonDetroit | MI | 2:30:21 | #6537 |
| 2012 | Rock ‘n' Roll Washington DCWashington | DC | 1:59:56 | #4619 |
| 2012 | Pasadena Half Marathon & 5KPasadena | CA | 3:19:29 | #2162 |
| 2011 | Less Popular Brooklyn Half MarathonBrooklyn | NY | 2:01:56 | #3330 |
| 2011 | The Unforgettable Staten Island Half MarathonStaten Island | NY | 2:04:20 | #3055 |
| 2010 | Say No to Drugs Half Marathon & 5K | — | 2:36:17 | #206 |
| 2010 | Sunrise Marathon 5K/10K/13.1 SAN FRANCISCOSan Francisco | CA | 2:41:25 | #6474 |
| 2010 | San Francisco Marathon | — | 2:41:25 | #6474 |
| 2010 | Thanksgiving Day Half MarathonAtlanta | GA | 2:48:05 | #8079 |
| 2008 | Parks Half MarathonRockville | MD | 2:18:37 | #1413 |
| 2007 | Women's Half MarathonNew York | NY | 1:52:11 | #425 |
| 2007 | Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphia | PA | 1:54:29 | #4493 |
| 2007 | 2027 WALT DISNEY WORLD® Marathon Weekend presented by State Farm® With A Running PassionOrlando | FL | 2:45:46 | #7127 |
| 2006 | Rock 'n' Roll Chicago Half MarathonChicago | IL | 1:52:39 | #2078 |
| 2006 | Chicago Distance Classic - | — | 1:52:39 | #2079 |
| 2004 | Carlsbad MarathonCarlsbad | CA | 2:31:43 | #3321 |
| 2001 | Santa Barbara Half Marathon & 5KSanta Barbara | CA | 1:55:47 | #424 |
States Raced
1 race 2 races 3-4 races 5+ races
State Breakdown
NYNew York
7 racesCACalifornia
5 racesDCDistrict of Columbia
4 racesMDMaryland
4 racesUTUtah
4 racesGAGeorgia
2 racesNENebraska
2 racesPAPennsylvania
2 racesARArkansas
1 raceFLFlorida
1 raceILIllinois
1 raceINIndiana
1 raceMIMichigan
1 raceMAMassachusetts
0 races50-State Challenge
14/ 50 states
36 states to go