Back to League Tables
MO
Mark O'Brien
MaleVirginia1996–2025
68
Total Finishes
40
Distinct Races
14
States (27%)
1:29:40
PR (6:51/mi)
2:05:52
Average
+0:31:52
Slower (first to last)
Medal House
2010
Cowtown Marathon, Half Marathon and Ultra Marathon
1:58:58
#1343 overall#934 gender
2010
Capital City Half Marathon
2:27:30
#4283 overall#2034 gender
2009
Cowtown Marathon, Half Marathon and Ultra Marathon
2:09:38
#1950 overall#1248 gender
2009
Capital City Half Marathon
2:20:58
#3003 overall#1487 gender
2008
Cowtown Marathon, Half Marathon and Ultra Marathon
1:59:26
#692 overall#480 gender
2008
Baltimore Running Festival
2:41:05
#5117 overall#2259 gender
2007
Cowtown Marathon, Half Marathon and Ultra Marathon
1:53:12
#321 overall#238 gender
2006
2026 Disneyland® Half Marathon Weekend presented by HONDA
2:01:56
#1581 overall#1063 gender
2006
Novo Nordisk New Jersey Marathon
2:04:20
#855 overall#493 gender
2006
Charlottesville Marathon
2:15:14
#584 overall#292 gender
2003
The Unforgettable Staten Island Half Marathon!
1:58:28
#1367 overall#1070 gender
1996
The Unforgettable Staten Island Half Marathon!
1:57:57
#1390 overall#1063 gender
Performance Timeline
Complete Race Log
| Year | Race | State | Time | Place |
|---|---|---|---|---|
| 2025 | Hudson Valley Marathon at the Walkway Over the HudsonHighland | NY | 1:33:21 | #42 |
| 2025 | The Jersey City Marathon & Half Marathon Marquee Experience at NewportJersey City | NJ | 2:04:35 | #2349 |
| 2025 | 2025 Disney Princess Half Marathon Weekend presented by CORKCICLE®Orlando | FL | 2:29:49 | #2918 |
| 2023 | Boston's Run To RememberBoston | MA | 2:03:55 | #1656 |
| 2022 | Shamrock MarathonVirginia Beach | VA | 2:02:32 | #1693 |
| 2022 | Allianz Richmond Marathon, CarMax Richmond Half Marathon, & Richmond 8kRichmond | VA | 2:07:16 | #2499 |
| 2022 | 2022 Petersburg Half Marathon & 5K presented by Poplar SpringsPetersburg | VA | 2:08:07 | #127 |
| 2022 | Kentucky Derby Festival Race WeekendLouisville | KY | 2:36:34 | #3319 |
| 2021 | Allianz Richmond Marathon, CarMax Richmond Half Marathon, & Richmond 8kRichmond | VA | 1:50:51 | #1119 |
| 2021 | Sports Backers MarathonHenrico County | VA | 1:57:18 | #84 |
| 2021 | 47th Colonial Half Marathon and 5KWilliamsburg | VA | 2:04:20 | #125 |
| 2021 | Union Bank Field House Fall Half Marathon & 5k/10kShelburne | VT | 2:05:03 | #71 |
| 2021 | Cowtown Marathon, Half Marathon and Ultra MarathonFort Worth | TX | 2:06:20 | #915 |
| 2020 | 2027 Publix Fort Lauderdale A1A Marathon, Half Marathon, 6K & Kids of Love Run, & Celsius 5k Presented by ColavitaFort Lauderdale | FL | 3:24:00 | #2800 |
| 2019 | Boston's Run To RememberBoston | MA | 1:38:07 | #228 |
| 2019 | Martha's Vineyard Marathon & Half MarathonOaks Bluff | MA | 1:59:23 | #288 |
| 2019 | 2022 Petersburg Half Marathon & 5K presented by Poplar SpringsPetersburg | VA | 2:00:28 | #154 |
| 2019 | Life Time Chicago Half Marathon + 5KChicago | IL | 2:05:27 | #2813 |
| 2019 | Seacoast Half MarathonPortsmouth | NH | 2:08:53 | #576 |
| 2019 | Novo Nordisk New Jersey MarathonLong Branch | NJ | 2:20:08 | #2192 |
| 2019 | Allianz Richmond Marathon, CarMax Richmond Half Marathon, & Richmond 8kRichmond | VA | 2:23:54 | #5649 |
| 2019 | Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphia | PA | 2:27:08 | #4154 |
| 2019 | Chicago Spring Half MarathonChicago | IL | 2:29:05 | #3535 |
| 2018 | Allianz Richmond Marathon, CarMax Richmond Half Marathon, & Richmond 8kRichmond | VA | 1:50:05 | #1384 |
| 2018 | The Gobbler Half Marathon, 10K & 5KLexington | KY | 1:53:34 | #56 |
| 2018 | Seacoast Half MarathonPortsmouth | NH | 1:59:55 | #459 |
| 2018 | 2022 Petersburg Half Marathon & 5K presented by Poplar SpringsPetersburg | VA | 2:00:57 | #190 |
| 2018 | Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphia | PA | 2:13:35 | #3265 |
| 2018 | Historic Half Training (sponsored by FARC)Fredericksburg | VA | 3:02:24 | #748 |
| 2018 | Life Time Miami Marathon & HalfMiami | FL | 3:23:04 | #12611 |
| 2017 | 2022 Petersburg Half Marathon & 5K presented by Poplar SpringsPetersburg | VA | 1:50:34 | #100 |
| 2017 | Allianz Richmond Marathon, CarMax Richmond Half Marathon, & Richmond 8kRichmond | VA | 1:51:29 | #1436 |
| 2017 | 47th Colonial Half Marathon and 5KWilliamsburg | VA | 1:51:47 | #185 |
| 2017 | Seacoast Half MarathonPortsmouth | NH | 2:00:07 | #515 |
| 2017 | Shamrock MarathonVirginia Beach | VA | 2:05:24 | #1788 |
| 2017 | Rock 'n' Roll Washington DCWashington | DC | 2:07:22 | #5114 |
| 2017 | Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphia | PA | 2:17:42 | #4502 |
| 2017 | Three Creeks Half Marathon, 10K & 5KGroveport | OH | 2:20:31 | #110 |
| 2017 | Rock n Roll NashvilleNashville | TN | 2:27:41 | #6402 |
| 2017 | AZT Oracle RumbleOracle | AZ | 2:28:03 | #34 |
| 2016 | Allianz Richmond Marathon, CarMax Richmond Half Marathon, & Richmond 8kRichmond | VA | 1:48:35 | #1128 |
| 2016 | The Runners Den Scottsdale 1/2 Marathon & 5KScottsdale | AZ | 1:50:10 | #248 |
| 2016 | 2022 Petersburg Half Marathon & 5K presented by Poplar SpringsPetersburg | VA | 1:54:28 | #200 |
| 2016 | Life Time Chicago Half Marathon + 5KChicago | IL | 1:56:37 | #1656 |
| 2016 | Seacoast Half MarathonPortsmouth | NH | 1:57:42 | #403 |
| 2016 | Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphia | PA | 2:10:54 | #4628 |
| 2016 | RaceVermont Fall Half MarathonShelburne | VT | 2:19:42 | #262 |
| 2015 | Allianz Richmond Marathon, CarMax Richmond Half Marathon, & Richmond 8kRichmond | VA | 1:45:51 | #979 |
| 2015 | 2022 Petersburg Half Marathon & 5K presented by Poplar SpringsPetersburg | VA | 1:49:47 | #99 |
| 2015 | All American Half MarathonFort Bragg | NC | 1:52:39 | #305 |
| 2015 | Flying Pig Pump and RunCincinnati | OH | 1:52:43 | #1415 |
| 2014 | Allianz Richmond Marathon, CarMax Richmond Half Marathon, & Richmond 8kRichmond | VA | 2:02:57 | #3223 |
| 2014 | EPIC Marathon and Running FestivalGreen Bay | WI | 2:07:18 | #2169 |
| 2013 | Community First Fox Cities Marathon presented by Miron ConstructionMenasha | WI | 1:55:22 | #761 |
| 2013 | 2026 Disneyland® Half Marathon Weekend presented by HONDAAnaheim | CA | 1:56:36 | #997 |
| 2013 | Novo Nordisk New Jersey MarathonLong Branch | NJ | 2:01:25 | #2086 |
| 2013 | 17th Annual Myrtle Beach Mini Marathon & Coastal 5KMyrtle Beach | SC | 2:06:06 | #964 |
| 2013 | Downtown River RunReno | NV | 2:06:07 | #529 |
| 2013 | Oshkosh Half Marathon & Loop with myTEAM TRIUMPHOshkosh | WI | 2:09:18 | #741 |
| 2012 | Lincoln Memorial Half MarathonSpringfield | IL | 1:29:40 | #33 |
| 2012 | Urban Cow Half MarathonSacramento | CA | 1:43:53 | #295 |
| 2012 | Oklahoma City Memorial MarathonOklahoma City | OK | 1:54:38 | #761 |
| 2012 | Community First Fox Cities Marathon presented by Miron ConstructionMenasha | WI | 2:03:58 | #1112 |
| 2012 | Downtown River RunReno | NV | 2:06:07 | #530 |
| 2012 | Newport MarathonNewport | RI | 2:35:40 | #2916 |
| 2011 | 2026 Disneyland® Half Marathon Weekend presented by HONDAAnaheim | CA | 1:53:52 | #964 |
| 2011 | Chevron City to Surf for ActivBurswood | WA | 2:14:32 | #2253 |
| 2010 | Cowtown Marathon, Half Marathon and Ultra MarathonFort Worth | TX | 1:58:58 | #1343 |
| 2010 | Capital City Half MarathonColumbus | OH | 2:27:30 | #4283 |
| 2009 | Cowtown Marathon, Half Marathon and Ultra MarathonFort Worth | TX | 2:09:38 | #1950 |
| 2009 | Capital City Half MarathonColumbus | OH | 2:20:58 | #3003 |
| 2008 | Cowtown Marathon, Half Marathon and Ultra MarathonFort Worth | TX | 1:59:26 | #692 |
| 2008 | Baltimore Running FestivalBaltimore | MD | 2:41:05 | #5117 |
| 2007 | Cowtown Marathon, Half Marathon and Ultra MarathonFort Worth | TX | 1:53:12 | #321 |
| 2006 | 2026 Disneyland® Half Marathon Weekend presented by HONDAAnaheim | CA | 2:01:56 | #1581 |
| 2006 | Novo Nordisk New Jersey MarathonLong Branch | NJ | 2:04:20 | #855 |
| 2006 | Charlottesville MarathonCharlottesville | VA | 2:15:14 | #584 |
| 2003 | The Unforgettable Staten Island Half Marathon!Staten Island | NY | 1:58:28 | #1367 |
| 1996 | The Unforgettable Staten Island Half Marathon!Staten Island | NY | 1:57:57 | #1390 |
States Raced
1 race 2 races 3-4 races 5+ races
State Breakdown
VAVirginia
21 racesTXTexas
5 racesCACalifornia
4 racesILIllinois
4 racesNJNew Jersey
4 racesOHOhio
4 racesWIWisconsin
4 racesFLFlorida
3 racesMAMassachusetts
3 racesNYNew York
3 racesAZArizona
2 racesNVNevada
2 racesMDMaryland
1 raceNCNorth Carolina
1 race50-State Challenge
14/ 51 states + DC
37 states to go