Back to League Tables
EO
Erin O'Brien
FemaleNew York1998–2026
120
Total Finishes
78
Distinct Races
24
States (47%)
1:38:05
PR (7:29/mi)
2:23:34
Average
+0:26:19
Slower (first to last)
Medal House
2007
American River Parkway Half Marathon
1:49:22
#204 overall#58 gender
2006
B.A.A. Half Marathon
1:45:22
#800 overall#218 gender
2006
Leaf Peepers Half Marathon
1:49:43
#196 overall#66 gender
2006
Rock ‘n’ Roll Philadelphia Half Marathon
2:23:36
#8777 overall#3820 gender
2006
Flying Pig Pump and Run
2:23:49
#2446 overall#1265 gender
2004
Steamboat Springs Marathon/Half Marathon/10K
2:25:16
#587 overall#361 gender
2003
DEXTER-ANN ARBOR RUN
2:00:53
#1329 overall#393 gender
2003
Georgetown to Idaho Springs Half Marathon
3:03:48
#2397 overall#1186 gender
2002
Rock 'n' Roll Virgina Beach Half Marathon
2:24:11
#5976 overall#2791 gender
2001
Rock 'n' Roll Virgina Beach Half Marathon
2:10:36
#5082 overall#2012 gender
2000
Georgetown to Idaho Springs Half Marathon
2:31:49
#2536 overall#1201 gender
1998
LONG ISLAND MARATHON FESTIVAL
2:11:14
#2906 overall#766 gender
Performance Timeline
Complete Race Log
| Year | Race | State | Time | Place |
|---|---|---|---|---|
| 2026 | Ventura MarathonVentura | CA | 2:37:33 | #1326 |
| 2025 | Made in the USA 5K/10K/15K/HalfSugar Hill | GA | 1:42:46 | #10 |
| 2025 | Chicago Spring Half MarathonChicago | IL | 1:52:44 | #1180 |
| 2025 | The LESS Popular Brooklyn Half Marathon!Brooklyn | NY | 1:52:51 | #8132 |
| 2025 | Manchester City MarathonManchester | NH | 2:13:08 | #458 |
| 2025 | Philadelphia MarathonPhiladelphia | PA | 2:18:49 | #7369 |
| 2025 | Love Run Half MarathonPhiladelphia | PA | 2:31:24 | #6310 |
| 2025 | Life Time Chicago Half Marathon + 5KChicago | IL | 2:38:31 | #6713 |
| 2025 | 2025 Disney Princess Half Marathon Weekend presented by CORKCICLE®Orlando | FL | 3:11:17 | #8346 |
| 2025 | OC Marathon - Half Marathon - 5KNewport Beach | CA | 4:05:14 | #8923 |
| 2024 | United Airlines NYC HalfNew York | NY | 1:46:58 | #6059 |
| 2024 | 2026 Alpharetta Women's Half Marathon & 5KAlpharetta | GA | 1:57:02 | #45 |
| 2023 | 2026 Alpharetta Women's Half Marathon & 5KAlpharetta | GA | 1:49:04 | #20 |
| 2023 | 12th Annual Suwanee Half Marathon / 10k / 5kSuwanee | GA | 1:57:10 | #66 |
| 2023 | Run SAN DIEGO 5K/10K/13.1San Diego | CA | 2:07:35 | #1811 |
| 2023 | The Unforgettable Staten Island Half Marathon!Staten Island | NY | 2:13:57 | #6190 |
| 2023 | Delaware Running FestivalWilmington | DE | 2:32:33 | #557 |
| 2022 | The LESS Popular Brooklyn Half Marathon!Brooklyn | NY | 1:45:30 | #3501 |
| 2022 | NYCRUNS Big Apple Half MarathonNew York | NY | 1:57:37 | #696 |
| 2022 | Nantucket Half MarathonNantucket | MA | 2:07:23 | #159 |
| 2022 | Second Wind Christie Clinic Illinois Race Weekend Training ProgramChampaign | IL | 2:11:49 | #1266 |
| 2022 | Philadelphia MarathonPhiladelphia | PA | 2:14:43 | #6368 |
| 2021 | Cambridge Half Marathon + 5KCambridge | MA | 2:01:17 | #1767 |
| 2020 | The LESS Popular Brooklyn Half Marathon!Brooklyn | NY | 1:56:40 | #2928 |
| 2019 | The LESS Popular Brooklyn Half Marathon!Brooklyn | NY | 1:47:13 | #5755 |
| 2019 | Ely Marathon WeekendEly | MN | 2:18:14 | #142 |
| 2019 | Amita Health Fit America 10KHoffman Estates | IL | 2:36:06 | #165 |
| 2019 | Love Run Half MarathonPhiladelphia | PA | 2:37:59 | #5750 |
| 2019 | 2025 Disney Princess Half Marathon Weekend presented by CORKCICLE®Orlando | FL | 3:08:07 | #10173 |
| 2018 | The LESS Popular Brooklyn Half Marathon!Brooklyn | NY | 1:41:37 | #3714 |
| 2018 | United Airlines NYC HalfNew York | NY | 1:42:47 | #3095 |
| 2018 | Buffalo Marathon WeekendBuffalo | NY | 1:56:18 | #703 |
| 2018 | First Midwest Half MarathonPalos Heights | IL | 2:15:02 | #428 |
| 2018 | Bend Marathon and HalfBend | OR | 2:22:57 | #718 |
| 2018 | Hershey Half MarathonHershey | PA | 2:24:11 | #2230 |
| 2018 | We Salute Half Marathon and 10KAnnapolis | MD | 2:40:51 | #147 |
| 2018 | Women's Half MarathonNew York | NY | 2:41:03 | #5010 |
| 2018 | Crawlin' Crab Half MarathonHampton | VA | 2:51:38 | #1054 |
| 2017 | The LESS Popular Brooklyn Half Marathon!Brooklyn | NY | 1:43:54 | #4550 |
| 2017 | United Airlines NYC HalfNew York | NY | 1:52:56 | #5743 |
| 2017 | Shoreline Half Marathon & 5KHamlin | NY | 1:55:42 | #157 |
| 2017 | The Notre Dame Holy HalfNotre Dame | IN | 2:00:34 | #568 |
| 2017 | Navy Air Force Half Marathon & Navy 5-MilerWashington | DC | 2:10:15 | #1800 |
| 2017 | Life Time Chicago Half Marathon + 5KChicago | IL | 2:13:44 | #2832 |
| 2017 | Second Wind Christie Clinic Illinois Race Weekend Training ProgramChampaign | IL | 2:14:34 | #2181 |
| 2017 | Surftown Half, 2-Person Relay & 5KWesterly | RI | 2:15:50 | #703 |
| 2017 | Shamrock MarathonVirginia Beach | VA | 2:16:03 | #2592 |
| 2017 | Rock 'n' Roll Chicago Half MarathonChicago | IL | 2:16:36 | #4869 |
| 2017 | Run SF "Golden Gate City" 5K/10K/13.1San Francisco | CA | 2:30:44 | #2460 |
| 2017 | Norfolk Harbor Half MarathonNorfolk | VA | 2:47:58 | #1417 |
| 2017 | Rock 'n' Roll Virgina Beach Half MarathonVirginia Beach | VA | 3:13:17 | #5031 |
| 2016 | The LESS Popular Brooklyn Half Marathon!Brooklyn | NY | 1:44:02 | #4280 |
| 2016 | Shamrock MarathonVirginia Beach | VA | 2:17:01 | #3248 |
| 2016 | Second Wind Christie Clinic Illinois Race Weekend Training ProgramChampaign | IL | 2:17:26 | #2508 |
| 2016 | Mississippi Blues Marathon, Half, 10K & 5KJackson | MS | 2:22:33 | #734 |
| 2016 | United Airlines NYC HalfNew York | NY | 2:25:07 | #16167 |
| 2016 | Key West Half Marathon & 5K, 8K, 10K, Rum Stroll & Beer MileKey West | FL | 2:26:04 | #1196 |
| 2016 | 2025 Disney Princess Half Marathon Weekend presented by CORKCICLE®Orlando | FL | 2:29:59 | #3369 |
| 2016 | Crawlin' Crab Half MarathonHampton | VA | 2:42:36 | #1243 |
| 2016 | Norfolk Harbor Half MarathonNorfolk | VA | 2:43:25 | #1323 |
| 2016 | Hightail Half MarathonAnchorage | AK | 2:46:11 | #519 |
| 2016 | Zombie Half MarathonAnchorage | AK | 2:46:35 | #447 |
| 2016 | Rock 'n' Roll Virgina Beach Half MarathonVirginia Beach | VA | 2:48:36 | #4527 |
| 2016 | 2027 Syracuse Half MarathonSyracuse | NY | 3:11:44 | #3575 |
| 2015 | The LESS Popular Brooklyn Half Marathon!Brooklyn | NY | 1:43:53 | #3992 |
| 2015 | Buffalo Marathon WeekendBuffalo | NY | 1:57:07 | #922 |
| 2015 | Fargo Marathon WeekendFargo | ND | 2:09:09 | #2453 |
| 2015 | Shamrock MarathonVirginia Beach | VA | 2:13:12 | #4206 |
| 2015 | Crawlin' Crab Half MarathonHampton | VA | 2:14:10 | #613 |
| 2015 | Norfolk Harbor Half MarathonNorfolk | VA | 2:16:10 | #1079 |
| 2015 | Love Run Half MarathonPhiladelphia | PA | 2:19:07 | #4142 |
| 2015 | Rock 'n' Roll Chicago Half MarathonChicago | IL | 2:22:23 | #5188 |
| 2015 | Monster DashMinneapolis | MN | 2:27:22 | #3685 |
| 2015 | Seacoast Half MarathonPortsmouth | NH | 2:27:27 | #955 |
| 2015 | Orange Leaf Half MarathonNew Braunfels | TX | 2:41:40 | #207 |
| 2015 | Women's Half MarathonNew York | NY | 3:16:08 | #7051 |
| 2014 | Gasparilla Distance Classic Race WeekendTampa | FL | 1:38:05 | #197 |
| 2014 | Love Run Half MarathonPhiladelphia | PA | 2:24:01 | #5157 |
| 2014 | 2027 Walt Disney World® Marathon WeekendOrlando | FL | 2:29:01 | #6204 |
| 2014 | Boston's Run To RememberBoston | MA | 2:36:57 | #6784 |
| 2014 | Rock 'n' Roll Los Angeles Half MarathonLos Angeles | CA | 2:44:52 | #5641 |
| 2014 | Women's Half MarathonNew York | NY | 2:51:07 | #5929 |
| 2014 | 15th Annual Rock CF Rivers Half Marathon & 5KGrosse Ile | MI | 2:54:47 | #810 |
| 2014 | 2025 Disney Princess Half Marathon Weekend presented by CORKCICLE®Orlando | FL | 3:11:13 | #12305 |
| 2014 | Tinker Bell Half MarathonAnaheim | CA | 3:23:39 | #10436 |
| 2013 | The LESS Popular Brooklyn Half Marathon!Brooklyn | NY | 1:42:29 | #3590 |
| 2013 | United Airlines NYC HalfNew York | NY | 2:00:22 | #7275 |
| 2013 | 2026 National Women's Half Marathon and 8KWashington | DC | 2:01:34 | #2900 |
| 2013 | Shiner Beer RunShiner | TX | 2:33:05 | #798 |
| 2013 | Honey Badger Half Marathon/10K/5KSan Rafael | CA | 2:38:12 | #91 |
| 2013 | Women's Half MarathonNew York | NY | 2:45:45 | #6474 |
| 2013 | Virginia Wine Country Half MarathonHillsboro | VA | 3:21:32 | #2236 |
| 2013 | 2025 Disney Princess Half Marathon Weekend presented by CORKCICLE®Orlando | FL | 3:29:27 | #18253 |
| 2012 | Rock 'n' Roll San DiegoSan Diego | CA | 1:55:44 | #2625 |
| 2012 | B.A.A. Half MarathonBoston | MA | 2:05:22 | #3245 |
| 2012 | Philadelphia MarathonPhiladelphia | PA | 2:07:52 | #5005 |
| 2012 | Hershey Half MarathonHershey | PA | 2:16:57 | #2191 |
| 2012 | Sunrise Marathon 5K/10K/13.1 KANSAS CITYKansas City | MO | 2:22:00 | #3480 |
| 2012 | Austin MarathonAustin | TX | 2:26:56 | #7209 |
| 2012 | Women's Half MarathonNew York | NY | 2:39:26 | #5396 |
| 2012 | Hamptons Marathon & Half MarathonEast Hampton | NY | 2:48:42 | #1220 |
| 2011 | The LESS Popular Brooklyn Half Marathon!Brooklyn | NY | 1:56:00 | #2613 |
| 2011 | Gasparilla Distance Classic Race WeekendTampa | FL | 2:02:33 | #1829 |
| 2011 | 2026 Disneyland® Half Marathon Weekend presented by HONDAAnaheim | CA | 2:23:44 | #4371 |
| 2011 | 2026 Disney Wine & Dine Half Marathon WeekendOrlando | FL | 3:04:36 | #6781 |
| 2011 | Ogden MarathonOgden | UT | 3:54:52 | #2347 |
| 2010 | Rock 'n' Roll Washington DCWashington | DC | 2:13:17 | #4587 |
| 2009 | UConn Health Half MarathonSimsbury | CT | 1:56:51 | #356 |
| 2009 | Historic Half Training (sponsored by FARC)Fredericksburg | VA | 2:14:49 | #2785 |
| 2008 | Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphia | PA | 1:57:46 | #5355 |
| 2008 | Rock ‘n’ Roll Denver Marathon & 1/2 MarathonDenver | CO | 2:08:04 | #1887 |
| 2008 | Hospital Hill RunKansas City | MO | 2:23:39 | #1285 |
| 2008 | Life Time Chicago Half Marathon + 5KChicago | IL | 2:41:00 | #9352 |
| 2008 | 2026 Avenue of the Giants MarathonArcata | CA | 3:20:36 | #770 |
| 2007 | American River Parkway Half MarathonSacramento | CA | 1:49:22 | #204 |
| 2007 | Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphia | PA | 2:05:02 | #6894 |
| 2007 | St. Luke's Half Marathon & 5KAllentown | PA | 2:09:16 | #1974 |
| 2007 | Dayton River Corridor ClassicDayton | OH | 2:17:56 | #457 |
| 2006 | B.A.A. Half MarathonBoston | MA | 1:45:22 | #800 |
| 2006 | Leaf Peepers Half MarathonWaterbury | VT | 1:49:43 | #196 |
| 2006 | Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphia | PA | 2:23:36 | #8777 |
| 2006 | Flying Pig Pump and RunCincinnati | OH | 2:23:49 | #2446 |
| 2004 | Steamboat Springs Marathon/Half Marathon/10KSteamboat Springs | CO | 2:25:16 | #587 |
| 2003 | DEXTER-ANN ARBOR RUNDexter | MI | 2:00:53 | #1329 |
| 2003 | Georgetown to Idaho Springs Half MarathonUnknown | CO | 3:03:48 | #2397 |
| 2002 | Rock 'n' Roll Virgina Beach Half MarathonVirginia Beach | VA | 2:24:11 | #5976 |
| 2001 | Rock 'n' Roll Virgina Beach Half MarathonVirginia Beach | VA | 2:10:36 | #5082 |
| 2000 | Georgetown to Idaho Springs Half MarathonUnknown | CO | 2:31:49 | #2536 |
| 1998 | LONG ISLAND MARATHON FESTIVALEast Meadow | NY | 2:11:14 | #2906 |
States Raced
1 race 2 races 3-4 races 5+ races
State Breakdown
NYNew York
28 racesVAVirginia
15 racesPAPennsylvania
13 racesCACalifornia
11 racesILIllinois
11 racesFLFlorida
10 racesMAMassachusetts
5 racesCOColorado
4 racesGAGeorgia
4 racesTXTexas
3 racesAKAlaska
2 racesMIMichigan
2 racesMNMinnesota
2 racesMOMissouri
2 racesNHNew Hampshire
2 racesOHOhio
2 racesCTConnecticut
1 raceMDMaryland
1 raceMSMississippi
1 raceNDNorth Dakota
1 raceOROregon
1 raceUTUtah
1 raceARArkansas
0 racesNJNew Jersey
0 races50-State Challenge
24/ 51 states + DC
27 states to go