HalfRuns
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John Kostenbauder

MalePennsylvania1999–2025

48

Total Finishes

19

Distinct Races

2

States (4%)

1:45:12

PR (8:02/mi)

2:33:56

Average

+1:27:21

Slower (first to last)

Medal House

2008

Rock ‘n’ Roll Philadelphia Half Marathon

1:59:21
#5778 overall#3804 gender
2006

Philadelphia Marathon

1:53:05
#571 overall#365 gender
2006

Rock ‘n’ Roll Philadelphia Half Marathon

2:00:47
#4905 overall#3254 gender
2005

Rock ‘n’ Roll Philadelphia Half Marathon

1:54:12
#3188 overall#2291 gender
2004

Rock ‘n’ Roll Philadelphia Half Marathon

1:44:31
#2022 overall#1588 gender
2003

Rock ‘n’ Roll Philadelphia Half Marathon

1:49:55
#2551 overall#1986 gender
2003

Caesar Rodney Half Marathon

1:53:21
#556 overall#439 gender
2002

Rock ‘n’ Roll Philadelphia Half Marathon

1:53:21
#2369 overall#1770 gender
2002

Caesar Rodney Half Marathon

1:54:33
#673 overall#531 gender
2001

Rock ‘n’ Roll Philadelphia Half Marathon

1:45:12
#1912 overall#1532 gender
2000

Caesar Rodney Half Marathon

1:56:05
#673 overall#534 gender
1999

Rock ‘n’ Roll Philadelphia Half Marathon

1:48:05
#2368 overall#1878 gender

Performance Timeline

PR 1:44:311999200020012002200220032003200420052006200620082009201020102011201220122012201320142014201520152015201520152016201620162017201720172017201820182018201820182018201820192019201920212021202120212021202220222022202220222022202220232023202420242024202520252025

Complete Race Log

YearRaceStateTimePlace
2025ChesCo Race Fest #3 - 13.1M, 26.2M & 50KWaynePA3:00:53#57
2025Rehoboth Seashore Marathon and Half MarathonRehoboth BeachDE3:12:12#1823
2025Philadelphia Distance RunPhiladelphiaPA3:15:26#3703
2024Philadelphia Distance RunPhiladelphiaPA2:47:42#2813
2024Hands on House Half Marathon 5KLancasterPA2:58:12#139
20241/2 Sauer 1/2 KrautPhiladelphiaPA3:06:34#385
2023Love Run Half MarathonPhiladelphiaPA2:55:12#5387
2023Rehoboth Seashore Marathon and Half MarathonRehoboth BeachDE3:03:38#1595
2022PHILADELPHIA DISTANCE RUNPhiladelphiaPA2:48:20#2510
2022Philadelphia Distance RunPhiladelphiaPA2:48:20#2505
2022Rehoboth Seashore Marathon and Half MarathonRehoboth BeachDE2:50:21#1448
2022Love Run Half MarathonPhiladelphiaPA2:52:21#5758
2022Coastal Delaware Running FestivalRehoboth BeachDE2:53:23#776
2022Coastal Delaware Running FestivalDewey BeachDE2:53:23#776
202217th Seashore Classic 1/2 Marathon, 2-person Relay & 5k Run/WalkLewesDE2:56:59#49
2021Rehoboth Seashore Marathon and Half MarathonRehoboth BeachDE2:49:30#1269
20216TH SEAWITCH 1/2 MARATHON CLASSIC (SEAWITCH RACING FESTIVAL WEEKEND)LewesDE2:50:15#89
2021Philadelphia MarathonPhiladelphiaPA2:51:22#7233
2021Pottstown Half MarathonPottstownPA2:52:06#159
2021Coastal Delaware Running FestivalDewey BeachDE2:53:15#806
2019Philadelphia MarathonPhiladelphiaPA2:31:24#9256
2019Pottstown Half MarathonPottstownPA2:38:35#283
2019Rehoboth Seashore Marathon and Half MarathonRehoboth BeachDE2:40:22#1396
2018Love Run Half MarathonPhiladelphiaPA2:24:50#4799
20181/2 Sauer 1/2 KrautPhiladelphiaPA2:25:25#265
2018Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphiaPA2:26:00#4382
2018Hatfield OctoHalf MarathonHatfieldPA2:26:13#126
2018Philadelphia MarathonPhiladelphiaPA2:28:00#8058
201817th Seashore Classic 1/2 Marathon, 2-person Relay & 5k Run/WalkLewesDE2:31:55#131
2018End of the Road Half Marathon & One Tunnel 4 MilerWaterfallPA2:36:12#152
2017Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphiaPA2:20:30#4862
2017Caesar Rodney Half MarathonWilmingtonDE2:22:37#452
20171/2 Sauer 1/2 KrautPhiladelphiaPA2:23:57#275
2017Chester County Half MarathonCoatesvillePA2:31:54#212
2016Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphiaPA2:22:02#6641
2016Monster Mash Marathon & Half MarathonDoverDE2:32:43#234
2016Hatfield OctoHalf MarathonHatfieldPA2:33:41#413
2015Hatfield OctoHalf MarathonHatfieldPA2:10:07#292
2015Rehoboth Seashore Marathon and Half MarathonRehoboth BeachDE2:14:16#888
2015Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphiaPA2:17:27#8426
2015Pottstown Half MarathonPottstownPA2:24:15#266
20151/2 Sauer 1/2 KrautPhiladelphiaPA2:30:34#383
2014Philadelphia MarathonPhiladelphiaPA2:17:47#8118
2014Hands on House Half Marathon 5KLancasterPA2:28:18#357
20131/2 Sauer 1/2 KrautPhiladelphiaPA2:16:27#373
2012Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphiaPA2:03:38#6486
2012Caesar Rodney Half MarathonWilmingtonDE2:10:24#1142
20121/2 Sauer 1/2 KrautPhiladelphiaPA2:10:36#298
2011Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphiaPA1:59:07#6127
2010Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphiaPA2:00:20#3578
2010Caesar Rodney Half MarathonWilmingtonDE2:10:13#1145
2009Caesar Rodney Half MarathonWilmingtonDE2:00:03#939
2008Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphiaPA1:59:21#5778
2006Philadelphia MarathonPhiladelphiaPA1:53:05#571
2006Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphiaPA2:00:47#4905
2005Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphiaPA1:54:12#3188
2004Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphiaPA1:44:31#2022
2003Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphiaPA1:49:55#2551
2003Caesar Rodney Half MarathonWilmingtonDE1:53:21#556
2002Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphiaPA1:53:21#2369
2002Caesar Rodney Half MarathonWilmingtonDE1:54:33#673
2001Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphiaPA1:45:12#1912
2000Caesar Rodney Half MarathonWilmingtonDE1:56:05#673
1999Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphiaPA1:48:05#2368

States Raced

1 race 2 races 3-4 races 5+ races

State Breakdown

PAPennsylvania
44 races
DEDelaware
20 races

50-State Challenge

2/ 51 states + DC

49 states to go