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KO
Kathleen O'Brien
FemaleNew York1998–2024
75
Total Finishes
52
Distinct Races
18
States (35%)
1:34:33
PR (7:13/mi)
2:14:45
Average
+1:09:56
Slower (first to last)
Medal House
2007
The Notre Dame Holy Half
1:54:23
#165 overall#64 gender
2006
Life Time Miami Marathon & Half
1:49:55
#833 overall#190 gender
2006
Capital City Marathon
2:27:37
#779 overall#423 gender
2005
Fairfield Road Races
2:04:17
#980 overall#309 gender
2005
2025 500 Festival Running Events
2:50:31
#17657 overall#7308 gender
2004
2025 500 Festival Running Events
2:51:51
#16724 overall#6870 gender
2003
Seattle Marathon
1:45:35
#754 overall#176 gender
2003
Life Time Chicago Half Marathon + 5K
2:07:22
#3234 overall#1285 gender
2003
Fairfield Road Races
2:25:23
#1737 overall#633 gender
2002
2025 500 Festival Running Events
2:39:56
#14040 overall#5478 gender
2000
Georgetown to Idaho Springs Half Marathon
1:57:25
#1216 overall#391 gender
1998
Eversource Hartford Marathon, Half Marathon, Relay & Charity 5K
2:19:23
#998 overall#355 gender
Performance Timeline
Complete Race Log
| Year | Race | State | Time | Place |
|---|---|---|---|---|
| 2024 | GREAT SOUTH BAY RUNBay Shore | NY | 1:35:59 | #18 |
| 2024 | Northwell Health Great South Bay RunBay Shore | NY | 1:35:59 | #18 |
| 2024 | The LESS Popular Brooklyn Half Marathon!Brooklyn | NY | 1:57:16 | #11296 |
| 2024 | Geneva Half Marathon, 5K, & Half Marathon Relay presented by Red Jacket OrchardsGeneva | NY | 2:27:18 | #259 |
| 2024 | Tom Walker Half Marathon & 5kGainesville | FL | 3:29:19 | #204 |
| 2023 | The LESS Popular Brooklyn Half Marathon!Brooklyn | NY | 1:34:33 | #2072 |
| 2023 | United Airlines NYC HalfNew York | NY | 1:44:15 | #4317 |
| 2023 | LONG ISLAND MARATHON FESTIVALEast Meadow | NY | 1:51:17 | #190 |
| 2023 | GREAT SOUTH BAY RUNBay Shore | NY | 1:52:03 | #86 |
| 2023 | Northwell Health Great South Bay RunBay Shore | NY | 1:52:03 | #86 |
| 2023 | Love Run Half MarathonPhiladelphia | PA | 2:09:26 | #3030 |
| 2023 | Game On! Marathon of the Treasure CoastStuart | FL | 2:48:19 | #419 |
| 2023 | BCS College Station MarathonCollege Station | TX | 4:22:27 | #1762 |
| 2022 | The LESS Popular Brooklyn Half Marathon!Brooklyn | NY | 1:37:01 | #1733 |
| 2022 | United Airlines NYC HalfNew York | NY | 1:37:53 | #2261 |
| 2022 | PHILADELPHIA DISTANCE RUNPhiladelphia | PA | 1:59:18 | #1190 |
| 2022 | Philadelphia Distance RunPhiladelphia | PA | 1:59:18 | #1187 |
| 2022 | Guthrie Wineglass Marathon, Wegmans Wineglass Half Marathon & Williams Toyota Wineglass 5KCorning | NY | 2:03:51 | #657 |
| 2022 | Capital City MarathonOlympia | WA | 2:07:54 | #293 |
| 2022 | Newport Rhode RacesNewport | RI | 2:09:39 | #916 |
| 2022 | Newport Rhode RaceNewport | RI | 2:09:39 | #916 |
| 2022 | 2025 500 Festival Running EventsIndianapolis | IN | 2:28:05 | #7644 |
| 2021 | PHILADELPHIA DISTANCE RUNPhiladelphia | PA | 1:55:59 | #846 |
| 2021 | Philadelphia Distance RunPhiladelphia | PA | 1:55:59 | #842 |
| 2021 | Spring Cleaning 5K, 10K & HalfWashington | DC | 2:00:41 | #10 |
| 2021 | Kaiser Permanente Colfax MarathonDenver | CO | 2:18:46 | #2102 |
| 2021 | Cedars of Lebanon Frostbite Half-MarathonLebanon | TN | 2:29:21 | #236 |
| 2020 | Flying Monkey Half MarathonNashville | TN | 2:29:57 | #113 |
| 2019 | JSRC RunAPaloozaAsbury Park | NJ | 2:04:50 | #776 |
| 2019 | Runapalooza Asbury ParkAsbury Park | NJ | 2:04:50 | #773 |
| 2019 | Chicago Country Sole / Chicago Fall ClassicChicago | IL | 2:08:55 | #360 |
| 2019 | North Shore ClassicHighland Park | IL | 2:11:13 | #765 |
| 2019 | Rock ‘n’ Roll Denver Marathon & 1/2 MarathonDenver | CO | 2:14:12 | #2178 |
| 2019 | Rock n Roll NashvilleNashville | TN | 2:14:47 | #4822 |
| 2019 | Harpeth Hills Flying Monkey MarathonNashville | TN | 2:15:52 | #84 |
| 2019 | Half At The Hamptons Half MarathonHampton | NH | 2:31:56 | #571 |
| 2019 | Women’s Running Half Marathon & 5kNashville | TN | 2:35:46 | #287 |
| 2018 | St. Michaels Running FestivalSaint Michaels | MD | 1:53:06 | #203 |
| 2018 | Chicago Country Sole / Chicago Fall ClassicChicago | IL | 2:17:38 | #497 |
| 2017 | Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphia | PA | 1:59:12 | #2146 |
| 2017 | The Notre Dame Holy HalfNotre Dame | IN | 2:09:32 | #749 |
| 2017 | Grand Teton Half MarathonJackson | WY | 2:24:35 | #893 |
| 2017 | The Racefaster Half MarathonParamus | NJ | 2:47:12 | #317 |
| 2016 | Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphia | PA | 1:59:25 | #2627 |
| 2015 | Capital City MarathonOlympia | WA | 1:55:11 | #229 |
| 2015 | Rock 'n' Roll Arizona MarathonPhoenix | AZ | 1:57:11 | #2240 |
| 2015 | Palisades Half Marathon + Trail RunFort Lee | NJ | 2:02:26 | #109 |
| 2015 | Great Bay Half MarathonNewmarket | NH | 2:27:21 | #603 |
| 2015 | Race to Robie CreekBoise | ID | 3:11:41 | #2077 |
| 2014 | Philadelphia MarathonPhiladelphia | PA | 1:51:46 | #2476 |
| 2014 | Capital City MarathonOlympia | WA | 1:57:53 | #312 |
| 2014 | Rock 'n' Roll Arizona MarathonPhoenix | AZ | 2:00:40 | #3312 |
| 2014 | Ocean City Running, 5k, Half MarathonOcean City | MD | 2:18:33 | #1346 |
| 2014 | Baltimore Running FestivalBaltimore | MD | 2:29:42 | #5636 |
| 2014 | Annapolis Running ClassicAnnapolis | MD | 2:30:49 | #2011 |
| 2014 | 2027 Walt Disney World® Marathon WeekendOrlando | FL | 2:52:34 | #11074 |
| 2014 | 2025 Disney Princess Half Marathon Weekend presented by CORKCICLE®Orlando | FL | 3:36:44 | #17368 |
| 2013 | Seattle MarathonSeattle | WA | 1:56:10 | #1429 |
| 2013 | United Airlines NYC HalfNew York | NY | 2:02:58 | #7976 |
| 2013 | The Maryland Half Marathon & 5KFulton | MD | 2:22:00 | #637 |
| 2012 | United Airlines NYC HalfNew York | NY | 2:13:50 | #11455 |
| 2012 | Race 13.1 Midtown Raleigh - SpringRaleigh | NC | 2:14:56 | #253 |
| 2012 | Windsor Half Marathon 10K & 5KWindsor | CA | 2:39:41 | #578 |
| 2011 | Rockfest Half MarathonHampton Beach | NH | 2:19:10 | #1260 |
| 2009 | 2027 Publix Fort Lauderdale A1A Marathon, Half Marathon, 6K & Kids of Love Run, & Celsius 5k Presented by ColavitaFort Lauderdale | FL | 1:45:35 | #346 |
| 2008 | Covered Bridges Half MarathonWoodstock | VT | 1:45:42 | #316 |
| 2008 | The LESS Popular Brooklyn Half Marathon!Brooklyn | NY | 1:47:44 | #1841 |
| 2008 | United Airlines NYC HalfNew York | NY | 1:53:36 | #3082 |
| 2008 | Novo Nordisk New Jersey MarathonLong Branch | NJ | 2:40:34 | #2984 |
| 2007 | The Notre Dame Holy HalfNotre Dame | IN | 1:54:23 | #165 |
| 2007 | United Airlines NYC HalfNew York | NY | 2:28:19 | #8858 |
| 2006 | Life Time Miami Marathon & HalfMiami | FL | 1:49:55 | #833 |
| 2006 | Capital City MarathonOlympia | WA | 2:27:37 | #779 |
| 2005 | Fairfield Road RacesFairfield | CT | 2:04:17 | #980 |
| 2005 | 2025 500 Festival Running EventsIndianapolis | IN | 2:50:31 | #17657 |
| 2004 | 2025 500 Festival Running EventsIndianapolis | IN | 2:51:51 | #16724 |
| 2003 | Seattle MarathonSeattle | WA | 1:45:35 | #754 |
| 2003 | Life Time Chicago Half Marathon + 5KChicago | IL | 2:07:22 | #3234 |
| 2003 | Fairfield Road RacesFairfield | CT | 2:25:23 | #1737 |
| 2002 | 2025 500 Festival Running EventsIndianapolis | IN | 2:39:56 | #14040 |
| 2000 | Georgetown to Idaho Springs Half MarathonUnknown | CO | 1:57:25 | #1216 |
| 1998 | Eversource Hartford Marathon, Half Marathon, Relay & Charity 5KHartford | CT | 2:19:23 | #998 |
States Raced
1 race 2 races 3-4 races 5+ races
State Breakdown
NYNew York
17 racesPAPennsylvania
8 racesFLFlorida
6 racesINIndiana
6 racesWAWashington
6 racesMDMaryland
5 racesNJNew Jersey
5 racesTNTennessee
5 racesILIllinois
4 racesCOColorado
3 racesCTConnecticut
3 racesNHNew Hampshire
3 racesDCDistrict of Columbia
1 raceIDIdaho
1 raceNCNorth Carolina
1 raceTXTexas
1 raceVTVermont
1 raceMAMassachusetts
0 races50-State Challenge
18/ 51 states + DC
33 states to go