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KO
Kerry O'Brien
FemaleDistrict of Columbia2002–2025
28
Total Finishes
21
Different Races
10
States (20%)
1:36:48
PR (7:23/mi)
1:55:50
Average
-0:19:32
Faster (first to last)
Medal House
2015
Rock 'n' Roll Las Vegas
1:44:17
#813 overall#162 gender
2014
Baltimore Running Festival
1:42:21
#333 overall#69 gender
2014
Gar Williams Half Marathon
1:51:49
#127 overall#35 gender
2012
Baltimore Running Festival
1:36:48
#298 overall#63 gender
2012
The North Face Endurance Challenge
2:04:00
#64 overall#13 gender
2012
Run Malibu
2:54:04
#1583 overall#950 gender
2010
Rock ‘n' Roll Washington DC
1:41:16
#730 overall#146 gender
2008
First Midwest Half Marathon
2:32:26
#1229 overall#612 gender
2007
Rock ‘n' Roll Washington DC
1:48:29
#444 overall#109 gender
2004
Rock ‘n’ Roll Philadelphia Half Marathon
1:43:14
#1835 overall#375 gender
2004
B.A.A. Half Marathon
1:57:45
#1502 overall#594 gender
2002
MCRRC Riley's Rumble Half Marathon
2:17:59
#423 overall#154 gender
Performance Timeline
Complete Race Log
| Year | Race | State | Time | Place |
|---|---|---|---|---|
| 2025 | Ion Bank Cheshire Road RacesCheshire | CT | 1:37:13 | #112 |
| 2025 | Paine to Pain Trail Half MarathonNew Rochelle | NY | 1:58:27 | #179 |
| 2021 | DC Half RacesWashington | DC | 1:40:45 | #106 |
| 2019 | Rock ‘n' Roll Washington DCWashington | DC | 2:01:19 | #3309 |
| 2018 | Guthrie Wineglass Marathon, Wegmans Wineglass Half Marathon & Williams Toyota Wineglass 5KCorning | NY | 1:58:43 | #627 |
| 2018 | Corporate CupCharlotte | NC | 1:58:53 | #366 |
| 2017 | Parks Half MarathonRockville | MD | 1:40:09 | #205 |
| 2017 | Shamrock MarathonVirginia Beach | VA | 1:47:17 | #544 |
| 2017 | Allianz Richmond Marathon, CarMax Richmond Half Marathon, & Capital One Richmond 8kRichmond | VA | 1:49:10 | #1212 |
| 2017 | Gar Williams Half MarathonPotomac | MD | 1:53:18 | #168 |
| 2016 | Allianz Richmond Marathon, CarMax Richmond Half Marathon, & Capital One Richmond 8kRichmond | VA | 1:36:59 | #368 |
| 2016 | Tobacco Road MarathonCary | NC | 1:40:49 | #131 |
| 2016 | Gar Williams Half MarathonPotomac | MD | 1:52:44 | #160 |
| 2016 | MCRRC Riley's Rumble Half MarathonBoyds | MD | 2:06:44 | #188 |
| 2016 | 2025 Disney Princess Half Marathon Weekend presented by CORKCICLE®Orlando | FL | 2:41:36 | #5023 |
| 2015 | Rock 'n' Roll Las VegasLas Vegas | NV | 1:44:17 | #813 |
| 2015 | Covenant Health Knoxville Marathon, Half Marathon, Relays, 5k and Kids RunKnoxville | TN | 1:44:59 | #181 |
| 2015 | Rock ‘n' Roll Washington DCWashington | DC | 1:50:48 | #2127 |
| 2014 | Baltimore Running FestivalBaltimore | MD | 1:42:21 | #333 |
| 2014 | Gar Williams Half MarathonPotomac | MD | 1:51:49 | #127 |
| 2012 | Baltimore Running FestivalBaltimore | MD | 1:36:48 | #298 |
| 2012 | The North Face Endurance ChallengeSterling | VA | 2:04:00 | #64 |
| 2012 | Run MalibuMalibu | CA | 2:54:04 | #1583 |
| 2010 | Rock ‘n' Roll Washington DCWashington | DC | 1:41:16 | #730 |
| 2008 | First Midwest Half MarathonPalos Heights | IL | 2:32:26 | #1229 |
| 2007 | Rock ‘n' Roll Washington DCWashington | DC | 1:48:29 | #444 |
| 2004 | Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphia | PA | 1:43:14 | #1835 |
| 2004 | B.A.A. Half MarathonBoston | MA | 1:57:45 | #1502 |
| 2002 | MCRRC Riley's Rumble Half MarathonBoyds | MD | 2:17:59 | #423 |
States Raced
1 race 2 races 3-4 races 5+ races
State Breakdown
MDMaryland
8 racesDCDistrict of Columbia
5 racesVAVirginia
4 racesNCNorth Carolina
2 racesNYNew York
2 racesCACalifornia
1 raceILIllinois
1 raceMAMassachusetts
1 raceNVNevada
1 raceNJNew Jersey
0 races50-State Challenge
10/ 50 states
40 states to go