HalfRuns
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Peter O'Brien

MaleCalifornia1997–2024

43

Total Finishes

33

Different Races

14

States (27%)

1:11:33

PR (5:28/mi)

2:15:39

Average

+2:12:23

Slower (first to last)

Medal House

2014

3M Half Marathon

2:02:22
#2169 overall#1238 gender
2014

Pittsburgh Marathon Weekend

2:05:42
#5436 overall#2963 gender
2014

Surf City Marathon

2:38:30
#10713 overall#4871 gender
2013

Sleepy Hollow Half Marathon

1:48:48
#216 overall#176 gender
2013

OC Marathon - Half Marathon - 5K

2:04:36
#2953 overall#1733 gender
2013

Decker Challenge and Brown Santa 5K

2:18:24
#657 overall#380 gender
2013

Vancouver USA Marathon

3:41:36
#1292 overall#494 gender
2011

Holiday Half Marathon

3:33:22
#1921 overall#543 gender
2009

Lake Merced Half Marathon

1:50:16
#100 overall#79 gender
2009

Thanksgiving Distance Classic

2:58:32
#2242 overall#1179 gender
2004

Rock 'n' Roll Virgina Beach Half Marathon

2:40:56
#8992 overall#4497 gender
1997

47th Colonial Half Marathon and 5K

1:11:33
#14 overall#14 gender

Performance Timeline

PR 1:11:331997200420092009201120132013201320132014201420142014201420142015201520152015201520162016201620162016201720172017201720172017201820182018201820182019201920192020202120222022202220232023202320242024

Complete Race Log

YearRaceStateTimePlace
2024The LESS Popular Brooklyn Half Marathon!BrooklynNY1:48:29#7069
2024Kaiser Permanente Colfax MarathonDenverCO3:23:56#5828
2023Marquette MarathonMarquetteMI1:46:53#100
2023Boston's Run To RememberBostonMA1:49:12#833
2023NYC Summer Half, 5 MilerNew YorkNY2:01:49#53
2022Cape Cod Marathon WeekendFalmouthMA1:51:49#374
2022Boston's Run To RememberBostonMA1:51:51#382
2022Purdue Boilermaker Half-Marathon & 5KWest LafayetteIN2:19:05#757
2021Twin Lobster Half MarathonGloucesterMA1:48:58#7
2020Surf City MarathonHuntington BeachCA2:37:45#6237
2019Boston's Run To RememberBostonMA1:33:14#139
2019Run Through the Pines Half Marathon & 5KCarverMA1:37:36#18
2019Brewers Mini MarathonmilwaukeeWI1:54:15#479
2018Baltimore Running FestivalBaltimoreMD1:33:08#103
20182025 500 Festival Running EventsIndianapolisIN1:54:57#3003
2018REVEL Big CottonwoodSalt Lake CityUT2:11:53#1633
2018Runtastic HAUNTED Salt Lake CitySalt Lake CityUT2:18:37#652
2018Surf City MarathonHuntington BeachCA2:28:40#5068
2017Chicago Country Sole / Chicago Fall ClassicChicagoIL1:43:39#80
20173M Half MarathonAustinTX1:44:22#694
2017Sunrise Marathon 5K/10K/13.1 SAN FRANCISCOSan FranciscoCA1:59:40#1250
2017Decker Challenge and Brown Santa 5KAustinTX2:07:31#370
2017Surf City MarathonHuntington BeachCA2:13:09#3860
2017OC Marathon - Half Marathon - 5KNewport BeachCA2:22:55#3204
2016Decker Challenge and Brown Santa 5KAustinTX1:48:52#177
2016OC Marathon - Half Marathon - 5KNewport BeachCA2:10:12#2627
20162026 2XU Long Beach Marathon & Half MarathonLong BeachCA2:22:19#3410
2016Surf City MarathonHuntington BeachCA2:30:08#6261
2016Buffalo Marathon WeekendBuffaloNY2:31:43#2668
2015Decker Challenge and Brown Santa 5KAustinTX1:57:47#294
2015Rocky Mountain Half Marathon & 5KEstes ParkCO2:14:27#448
2015Rock ‘n’ Roll Denver Marathon & 1/2 MarathonDenverCO2:21:09#4698
2015Surf City MarathonHuntington BeachCA2:23:23#6791
2015Zion Half MarathonSpringdaleUT2:46:25#1438
20143M Half MarathonAustinTX2:02:22#2169
2014Pittsburgh Marathon WeekendPittsburghPA2:05:42#5436
2014Surf City MarathonHuntington BeachCA2:38:30#10713
2014Rock ‘n’ Roll Denver Marathon & 1/2 MarathonDenverCO2:51:29#7101
2014Foot Traffic Flat MarathonPortlandOR3:34:38#1743
2014Heart Breaker HalfPortlandOR3:37:54#510
2013Sleepy Hollow Half MarathonSleepy HollowNY1:48:48#216
2013OC Marathon - Half Marathon - 5KNewport BeachCA2:04:36#2953
2013Decker Challenge and Brown Santa 5KAustinTX2:18:24#657
2013Vancouver USA MarathonVancouverWA3:41:36#1292
2011Holiday Half MarathonPortlandOR3:33:22#1921
2009Lake Merced Half MarathonSan FranciscoCA1:50:16#100
2009Thanksgiving Distance ClassicJacksonvilleFL2:58:32#2242
2004Rock 'n' Roll Virgina Beach Half MarathonVirginia BeachVA2:40:56#8992
199747th Colonial Half Marathon and 5KWilliamsburgVA1:11:33#14

States Raced

1 race 2 races 3-4 races 5+ races

State Breakdown

CACalifornia
12 races
MAMassachusetts
6 races
TXTexas
6 races
COColorado
4 races
NYNew York
4 races
OROregon
3 races
UTUtah
3 races
INIndiana
2 races
VAVirginia
2 races
FLFlorida
1 race
ILIllinois
1 race
MDMaryland
1 race
MIMichigan
1 race
PAPennsylvania
1 race

50-State Challenge

14/ 51 states + DC

37 states to go