HalfRuns
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Bill O'Brien

MaleMassachusetts1993–2025

63

Total Finishes

45

Different Races

14

States (28%)

1:37:49

PR (7:28/mi)

2:04:40

Average

+0:54:59

Slower (first to last)

Medal House

2007

Madison Marathon

1:54:02
#737 overall#483 gender
2006

3M Half Marathon

1:46:56
#1032 overall#687 gender
2004

Rock 'n' Roll Arizona Marathon

2:56:27
#10996 overall#4593 gender
2003

Jersey Shore Half Marathon and 2 Mile Run

1:58:37
#362 overall#245 gender
2002

Jersey Shore Half Marathon and 2 Mile Run

1:39:13
#80 overall#69 gender
2002

2027 Walt Disney World® Marathon Weekend

2:02:24
#913 overall#575 gender
1997

The Unforgettable Staten Island Half Marathon!

2:34:31
#1483 overall#1475 gender
1997

Liberty Waterfront Half Marathon and 5K Run

2:44:18
#712 overall#538 gender
1996

Liberty Waterfront Half Marathon and 5K Run

2:23:18
#713 overall#537 gender
1994

Buhl Half Marathon and 5K

1:37:49
#128 overall#114 gender
1994

The Unforgettable Staten Island Half Marathon!

2:17:38
#1479 overall#1132 gender
1993

The Unforgettable Staten Island Half Marathon!

2:08:13
#1260 overall#1016 gender

Performance Timeline

PR 1:37:491993199419941996199719972002200220032004200620072007200820082008200920102011201120112012201220122012201220122012201220122012201320132013201320132013201320132013201420142014201420142014201520152015201520152015201520182018201920202022202320242025202520252025

Complete Race Log

YearRaceStateTimePlace
2025Narragansett Summer Running FestivalNorth EastonMA2:23:49#531
2025Barron Collier Companies Naples Half MarathonNaplesFL2:27:45#1093
2025Horseneck Half & 3.5 Miler: SOLD OUT! NO WEEKEND REGISTRATIONS WILL BE ACCEPTEDWestportMA2:33:21#475
2025Tucson MarathonTucsonAZ3:03:12#1192
2024Tucson MarathonTucsonAZ2:39:26#1070
2023Tucson MarathonTucsonAZ2:35:49#960
20222025 500 Festival Running EventsIndianapolisIN3:53:20#13231
2020Fairfield Road RacesFairfieldCT1:49:19#13
2019Run For Your HeartSaginaw MI2:20:37#90
2018Oak Barrel Half MarathonLynchburgTN1:54:36#159
2018Starved Rock Country MarathonOttawaIL2:16:00#304
2015Johnny Kelley Half MarathonHyannisMA1:51:15#171
2015Mayflower Brewing Half Marathon—1:54:40#353
2015Horseneck Half & 3.5 Miler: SOLD OUT! NO WEEKEND REGISTRATIONS WILL BE ACCEPTEDWestportMA1:57:09#81
2015Horseneck Half Marathon—1:57:09#81
2015Plymouth Run To The RockPlymouthMA1:58:12#166
2015Mountains 2 Beach Marathon and HalfVenturaCA1:59:07#480
2015Mountains 2 Beach Marathon, Half & 5K—1:59:07#479
2014Johnny Kelley Half MarathonHyannisMA1:44:34#158
2014Hyannis MarathonHyannisMA1:49:14#793
2014New Bedford Half MarathonNew BedfordMA1:50:23#1209
2014Ojai Half Marathon/5K/10K—2:01:51#85
2014Ojai Half Marathon 5k &10kOjaiCA2:01:52#85
2014Plymouth Run To The RockPlymouthMA2:02:40#148
2013New Bedford Half MarathonNew BedfordMA1:49:11#1184
2013New Bedford Half Marathon—1:49:11#1140
2013Hyannis MarathonHyannisMA1:49:22#635
2013Johnny Kelley Half MarathonHyannisMA1:50:36#218
201333rd The Great Hyannis Road Races, Half Marathon—1:50:36#218
2013HARWICH CRANBERRY HARVEST HALF MARATHON—1:52:14#206
2013Old Sandwich Road Races—1:55:50#85
2013Plymouth Run To The RockPlymouthMA1:58:23#218
2013Run to the Rock 1/2 Marathon 5k and 10k—1:58:23#218
2012Harwich Cranberry Harvest Half Marathon—1:45:48#110
2012Old Sandwich Road Races—1:46:01#37
2012The Notre Dame Holy HalfNotre DameIN1:49:08#223
2012Johnny Kelley Half MarathonHyannisMA1:50:59#169
2012The Great Hyannis Road Races, Half Marathon& 5k—1:50:59#169
2012Hyannis MarathonHyannisMA1:52:35#1167
2012Hyannis Marathon, Half Marathon, Marathon Relay—1:52:35#1165
2012New Bedford Half MarathonNew BedfordMA1:54:29#1377
2012New Bedford Half Marathon—1:54:29#1311
2012Plymouth Run To The RockPlymouthMA2:04:29#221
201134th Annual New Bedford Half Marathon—1:49:50#1063
2011Hyannis Marathon, Half Marathon, 10K & Marathon Relay—1:51:15#865
2011Harwich Cranberry Harvest Half Marathon & 7.3MI—1:53:42#148
20102026 Beaverton Half Marathon, 5/10K Presented by NIKEBeavertonOR1:46:14#328
2009New Bedford Half MarathonNew BedfordMA1:47:00#972
2008Manchester City MarathonManchesterNH1:43:25#192
2008Madison Marathon—1:55:43#864
2008Rock 'n' Roll NashvilleNashvilleTN3:21:12#19019
2007Madison Marathon—1:54:02#737
2007Rock 'n' Roll NashvilleNashvilleTN3:23:32#17198
20063M Half MarathonAustinTX1:46:56#1032
2004Rock 'n' Roll Arizona MarathonPhoenixAZ2:56:27#10996
2003Jersey Shore Half Marathon and 2 Mile RunHighlandsNJ1:58:37#362
2002Jersey Shore Half Marathon and 2 Mile RunHighlandsNJ1:39:13#80
20022027 Walt Disney World® Marathon WeekendOrlandoFL2:02:24#913
1997The Unforgettable Staten Island Half Marathon!Staten IslandNY2:34:31#1483
1997Liberty Waterfront Half Marathon and 5K RunJersey CityNJ2:44:18#712
1996Liberty Waterfront Half Marathon and 5K RunJersey CityNJ2:23:18#713
1994Buhl Half Marathon and 5KHermitagePA1:37:49#128
1994The Unforgettable Staten Island Half Marathon!Staten IslandNY2:17:38#1479
1993The Unforgettable Staten Island Half Marathon!Staten IslandNY2:08:13#1260

States Raced

1 race 2 races 3-4 races 5+ races

State Breakdown

MAMassachusetts
18 races
AZArizona
4 races
NJNew Jersey
4 races
NYNew York
3 races
TNTennessee
3 races
CACalifornia
2 races
FLFlorida
2 races
INIndiana
2 races
ILIllinois
1 race
MIMichigan
1 race
NHNew Hampshire
1 race
OROregon
1 race
PAPennsylvania
1 race
TXTexas
1 race

50-State Challenge

14/ 50 states

36 states to go