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JO
Jennifer O'Brien
FemaleFlorida1999–2024
90
Total Finishes
65
Distinct Races
26
States (51%)
1:32:18
PR (7:03/mi)
2:17:41
Average
+0:04:18
Slower (first to last)
Medal House
2006
Kirkland Half Marathon & 5K
2:07:24
#421 overall#193 gender
2005
Beer City Half™ San Diego
2:00:56
#2348 overall#704 gender
2005
Detroit Free Press Marathon
2:04:32
#1807 overall#667 gender
2005
MO' Cowbell Marathon/Half-Marathon/10K/5K
2:24:11
#1607 overall#752 gender
2005
Greater St. Louis Marathon
3:04:36
#3859 overall#2196 gender
2004
Detroit Free Press Marathon
2:12:43
#1197 overall#503 gender
2004
Life Time Miami Marathon & Half
2:55:02
#3446 overall#1666 gender
2003
Rock n Roll Nashville
2:00:53
#2079 overall#741 gender
2003
Covered Bridges Half Marathon
2:15:02
#1192 overall#576 gender
2002
Rock n Roll Nashville
2:10:41
#2539 overall#1047 gender
2001
Boulder Rez Marathon
1:49:53
#426 overall#117 gender
1999
2025 500 Festival Running Events
2:06:35
#6488 overall#1606 gender
Performance Timeline
Complete Race Log
| Year | Race | State | Time | Place |
|---|---|---|---|---|
| 2024 | NYCRUNS Brooklyn Ice Cream Social Half MarathonBrooklyn | NY | 2:10:53 | #12203 |
| 2023 | Town of Celebration Marathon & Half MarathonCelebration | FL | 1:39:08 | #102 |
| 2023 | OCNJ Half Marathon, 10 Mile & 5KOcean City | NJ | 1:46:13 | #74 |
| 2023 | St. Jude Memphis Marathon WeekendMemphis | TN | 2:50:27 | #5260 |
| 2022 | Town of Celebration Marathon & Half MarathonCelebration | FL | 1:35:38 | #57 |
| 2022 | Love Run Half MarathonPhiladelphia | PA | 2:30:16 | #4930 |
| 2021 | Oklahoma City Memorial MarathonOklahoma City | OK | 3:38:37 | #3908 |
| 2020 | Best Damn Race OrlandoOrlando | FL | 1:39:29 | #60 |
| 2020 | Best Damn Race - OrlandoOrlando | FL | 1:39:30 | #60 |
| 2020 | Newport News One City MarathonNewport News | VA | 2:11:24 | #300 |
| 2020 | B.A.A. Half MarathonBoston | MA | 3:02:43 | #6269 |
| 2020 | 2025 Disney Princess Half Marathon Weekend presented by CORKCICLE®Orlando | FL | 3:34:42 | #16436 |
| 2019 | Jack & Jill Downhill Marathon, Half Marathon: Boise Id.Boise | ID | 2:03:41 | #50 |
| 2019 | Crawlin' Crab Half MarathonHampton | VA | 2:12:41 | #515 |
| 2019 | RunSBY Events (Salisbury Marathon/Salisbury Half Marathon/5k)Salisbury | MD | 2:20:51 | #204 |
| 2019 | Salisbury Marathon / Half Marathon/5kSalisbury | MD | 2:20:51 | #202 |
| 2019 | Newport News One City MarathonNewport News | VA | 2:21:35 | #289 |
| 2018 | Town of Celebration Marathon & Half MarathonCelebration | FL | 1:36:52 | #49 |
| 2018 | HBF Run for a ReasonPerth | WA | 1:40:30 | #378 |
| 2018 | Harbor Half MarathonCorpus Christi | TX | 1:58:49 | #62 |
| 2017 | Town of Celebration Marathon & Half MarathonCelebration | FL | 1:32:44 | #37 |
| 2017 | Pub 317's Run to the PubBozeman | MT | 1:49:39 | #168 |
| 2017 | Run to the PubBozeman | MT | 1:49:40 | #168 |
| 2017 | Divas Half MarathonGalveston | TX | 2:32:39 | #567 |
| 2017 | Portsmouth Half MarathonPortsmouth | NH | 2:46:30 | #430 |
| 2017 | Rock n Roll NashvilleNashville | TN | 2:47:29 | #10546 |
| 2017 | Encinitas Half MarathonEncinitas | CA | 3:24:44 | #4559 |
| 2016 | OUC Orlando Half MarathonOrlando | FL | 1:36:19 | #132 |
| 2016 | Missoula Marathon Half Marathon 5K Kids MarathonMissoula | MT | 1:46:04 | #286 |
| 2016 | Pub 317's Run to the PubBozeman | MT | 1:56:32 | #295 |
| 2016 | Mystic Half Marathon & 10KMystic | CT | 2:05:59 | #537 |
| 2016 | Eversource Hartford Marathon, Half Marathon, Relay & Charity 5KHartford | CT | 2:15:01 | #3075 |
| 2016 | St. Jude Rock 'n' Roll SeattleSeattle | WA | 2:16:07 | #4981 |
| 2016 | La Porte By the Bay Half MarathonLa Porte | TX | 2:28:19 | #953 |
| 2016 | Napa to Sonoma Wine Country Half MarathonSonoma | CA | 3:03:48 | #2485 |
| 2015 | Rock 'n' Roll Savannah Marathon & 1/2 MarathonSavannah | GA | 1:39:07 | #177 |
| 2015 | St. Jude Rock 'n' Roll SeattleSeattle | WA | 2:19:17 | #5255 |
| 2015 | PRESALE 2027 AmeriHealth New Jersey April Fools Half Marathon & 8KAtlantic City | NJ | 2:28:37 | #996 |
| 2015 | Divas Half MarathonGalveston | TX | 2:29:05 | #696 |
| 2015 | Rockfest Half MarathonHampton Beach | NH | 2:36:59 | #3860 |
| 2015 | Chosen MarathonNew Braunfels | TX | 2:46:41 | #716 |
| 2014 | Best Damn Race - OrlandoOrlando | FL | 1:32:18 | #28 |
| 2014 | 2026 Pro Football Hall of Fame Race SeriesCanton | OH | 1:47:00 | #240 |
| 2014 | Game On! Marathon of the Treasure CoastStuart | FL | 1:59:32 | #79 |
| 2014 | Rockfest Half MarathonHampton Beach | NH | 2:13:22 | #2542 |
| 2014 | Divas Half MarathonGalveston | TX | 2:29:32 | #808 |
| 2014 | Rock 'n' Roll New OrleansNew Orleans | LA | 2:42:09 | #6804 |
| 2014 | Judgment Day Half Marathon, 10K & 5K Run/WalkBakersfield | CA | 3:05:32 | #563 |
| 2014 | Hell Of A Half Marathon & 2 Person RelayExeter | CA | 3:34:42 | #752 |
| 2013 | Rock 'n' Roll San DiegoSan Diego | CA | 2:01:01 | #4667 |
| 2013 | Eversource Hartford Marathon, Half Marathon, Relay & Charity 5KHartford | CT | 2:15:47 | #4302 |
| 2013 | Women’s Running Half Marathon & 5kNashville | TN | 2:16:07 | #799 |
| 2013 | Big Lake Half MarathonAlton Bay | NH | 2:17:41 | #649 |
| 2013 | Skagit Flats Marathon, Half & 5kBurlington | WA | 2:18:56 | #225 |
| 2013 | Rockfest Half MarathonHampton Beach | NH | 2:24:01 | #2969 |
| 2013 | Rock 'n' Roll Chicago Half MarathonChicago | IL | 2:24:54 | #8198 |
| 2013 | U.S. Polo Assn. Palm Beaches MarathonWest Palm Beach | FL | 2:36:31 | #1561 |
| 2013 | Kentucky Derby Festival Race WeekendLouisville | KY | 2:44:51 | #8691 |
| 2012 | Fox Valley Marathon RacesSaint Charles | IL | 1:59:00 | #237 |
| 2012 | Kentucky Derby Festival Race WeekendLouisville | KY | 2:01:53 | #3673 |
| 2012 | 36th Mill Creek Distance Classic Half Marathon & 5-MileYoungstown | OH | 2:05:46 | #295 |
| 2012 | Women's Running Festival featuring a Half Marathon, 10K, & 5KCarmel | IN | 2:14:39 | #397 |
| 2012 | Shamrock MarathonVirginia Beach | VA | 2:15:25 | #4097 |
| 2012 | Unite Half Marathon & 8K RunNew Brunswick | NJ | 2:20:08 | #2119 |
| 2012 | Novo Nordisk New Jersey MarathonLong Branch | NJ | 2:25:27 | #4662 |
| 2012 | Lake Placid Marathon and Half and 10KLake Placid | NY | 2:38:57 | #1034 |
| 2012 | IMT Des Moines MarathonDes Moines | IA | 3:24:47 | #4020 |
| 2011 | Rock 'n' Roll Virgina Beach Half MarathonVirginia Beach | VA | 1:43:41 | #759 |
| 2011 | Pittsburgh Marathon WeekendPittsburgh | PA | 1:57:06 | #1788 |
| 2011 | MO' Cowbell Marathon/Half-Marathon/10K/5KSaint Charles | MO | 2:06:43 | #695 |
| 2011 | Lake Placid Marathon and Half and 10KLake Placid | NY | 2:26:57 | #968 |
| 2010 | Seacoast Half MarathonPortsmouth | NH | 1:58:01 | #470 |
| 2010 | Charlottesville MarathonCharlottesville | VA | 2:07:02 | #637 |
| 2010 | 2026 - San Antonio MarathonSan Antonio | TX | 2:08:40 | #6042 |
| 2009 | Rock 'n' Roll Virgina Beach Half MarathonVirginia Beach | VA | 1:44:14 | #1075 |
| 2009 | Carlsbad MarathonCarlsbad | CA | 1:53:45 | #1844 |
| 2009 | Kentucky Derby Festival Race WeekendLouisville | KY | 2:07:35 | #2697 |
| 2008 | Seacoast Half MarathonPortsmouth | NH | 1:58:51 | #478 |
| 2008 | IMT Des Moines MarathonDes Moines | IA | 1:58:55 | #939 |
| 2008 | Eugene Marathon 2024Eugene | OR | 2:06:07 | #1106 |
| 2008 | Beer City Half™ San DiegoSan Diego | CA | 2:18:30 | #3942 |
| 2007 | Seacoast Half MarathonPortsmouth | NH | 2:02:09 | #467 |
| 2007 | Publix Atlanta Marathon, Half Marathon & 5KAtlanta | GA | 3:03:16 | #8125 |
| 2006 | Kirkland Half Marathon & 5KKirkland | WA | 2:07:24 | #421 |
| 2006 | Shamrock MarathonVirginia Beach | VA | 2:38:23 | #3307 |
| 2006 | Run the RockiesFrisco | CO | 2:39:08 | #147 |
| 2006 | Boulder Rez MarathonBoulder | CO | 2:50:42 | #1854 |
| 2006 | 2025 500 Festival Running EventsIndianapolis | IN | 3:34:36 | #25504 |
| 2005 | Beer City Half™ San DiegoSan Diego | CA | 2:00:56 | #2348 |
| 2005 | Detroit Free Press MarathonDetroit | MI | 2:04:32 | #1807 |
| 2005 | MO' Cowbell Marathon/Half-Marathon/10K/5KSaint Charles | MO | 2:24:11 | #1607 |
| 2005 | Greater St. Louis MarathonSt. Louis | MO | 3:04:36 | #3859 |
| 2004 | Detroit Free Press MarathonDetroit | MI | 2:12:43 | #1197 |
| 2004 | Life Time Miami Marathon & HalfMiami | FL | 2:55:02 | #3446 |
| 2003 | Rock n Roll NashvilleNashville | TN | 2:00:53 | #2079 |
| 2003 | Covered Bridges Half MarathonWoodstock | VT | 2:15:02 | #1192 |
| 2002 | Rock n Roll NashvilleNashville | TN | 2:10:41 | #2539 |
| 2001 | Boulder Rez MarathonBoulder | CO | 1:49:53 | #426 |
| 1999 | 2025 500 Festival Running EventsIndianapolis | IN | 2:06:35 | #6488 |
States Raced
1 race 2 races 3-4 races 5+ races
State Breakdown
FLFlorida
12 racesCACalifornia
8 racesNHNew Hampshire
8 racesVAVirginia
8 racesTXTexas
7 racesTNTennessee
5 racesWAWashington
5 racesMTMontana
4 racesNJNew Jersey
4 racesCOColorado
3 racesCTConnecticut
3 racesINIndiana
3 racesKYKentucky
3 racesMOMissouri
3 racesNYNew York
3 racesGAGeorgia
2 racesIAIowa
2 racesILIllinois
2 racesMIMichigan
2 racesOHOhio
2 racesMAMassachusetts
1 raceOKOklahoma
1 raceOROregon
1 raceVTVermont
1 raceDCDistrict of Columbia
0 racesNCNorth Carolina
0 races50-State Challenge
26/ 51 states + DC
25 states to go