HalfRuns
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John Olszewski

MaleMichigan2009–2026

41

Total Finishes

26

Different Races

4

States (8%)

1:18:42

PR (6:00/mi)

1:38:28

Average

+0:15:26

Slower (first to last)

Medal House

2016

2026 Holland Haven Marathon

1:19:52
#1 overall#1 gender
2015

Capital City River Run

1:18:42
#9 overall#9 gender
2014

15th Annual Rock CF Rivers Half Marathon & 5K

1:20:44
#6 overall#6 gender
2014

Bruckelaufe - The Bridge Race

1:22:30
#4 overall#4 gender
2014

Back to the Beach

1:25:11
#2 overall#2 gender
2013

Martian Invasion of the Races

1:22:16
#12 overall#12 gender
2013

Brooksie Way Half Marathon and 5K

1:24:32
#18 overall#16 gender
2013

Dahlgren Trail Half Marathon

2:55:46
#162 overall#93 gender
2012

Brooksie Way Half Marathon and 5K

1:24:42
#26 overall#25 gender
2012

Let's Move Festival of Races

1:27:19
#15 overall#15 gender
2010

Martian Invasion of the Races

1:34:48
#107 overall#97 gender
2009

Detroit Free Press Marathon

1:39:58
#306 overall#256 gender

Performance Timeline

PR 1:18:4220092010201220122013201320132014201420142015201620162017201720172018201820192019201920212022202220222022202320232023202320242024202420242024202520252025202520262026

Complete Race Log

YearRaceStateTimePlace
202615th Annual Rock CF Rivers Half Marathon & 5KGrosse IleMI1:21:43#25
2026La Jolla Half Marathon & 5KSan DiegoCA1:55:24#845
2025Rose Bowl Half MarathonPasadenaCA1:23:17#35
2025Detroit Free Press MarathonDetroitMI1:23:59#51
2025Urban Bourbon Half Marathon and 5KLouisvilleKY3:05:49#1933
2025Kentucky Derby Festival Race WeekendLouisvilleKY3:07:48#5538
2024Martian Invasion of the RacesDearbornMI1:24:56#13
2024"Bridge to Brew" Half Marathon and 5KPort HuronMI1:25:08#3
2024Life Time Chicago Half Marathon + 5KChicagoIL1:42:47#528
2024Chicagoland Spring Marathon, Half Marathon & 10KSchaumburgIL1:47:59#152
2024Urban Bourbon Half Marathon and 5KLouisvilleKY2:56:33#1719
20232026 Zeigler Kalamazoo MarathonKalamazooMI1:22:48#6
2023VolkslaufeFrankenmuthMI1:26:11#5
2023Christmas in July Half Marathon and 5K (Chicago area)Elk Grove VillageIL2:10:00#293
2023Chicagoland Spring Marathon, Half Marathon & 10KSchaumburgIL2:31:22#495
2022Martian Invasion of the RacesDearbornMI1:22:21#4
2022Capital City River RunLansingMI1:22:36#9
2022Capital City River RunLansingMI1:22:36#9
2022Beer City Half™ San DiegoSan DiegoCA1:50:54#473
2021Brooksie Way Half Marathon and 5KAuburn HillsMI1:23:52#9
2019DEXTER-ANN ARBOR RUNDexterMI1:21:18#28
2019Let's Move Festival of RacesMacombMI1:22:46#1
2019Brooksie Way Half Marathon and 5KAuburn HillsMI1:24:24#10
2018MERCY HEALTH GLASS CITY MARATHONToledoOH1:19:19#21
2018Brooksie Way Half Marathon and 5KAuburn HillsMI1:20:08#7
2017Martian Invasion of the RacesDearbornMI1:19:41#4
20172026 Holland Haven MarathonHollandMI1:20:50#2
2017First Energy Akron MarathonAkronOH1:22:25#37
20162026 Holland Haven MarathonHollandMI1:19:52#1
2016Bayshore Marathon, Half Marathon, 10K, & Kids Fun RunTraverse CityMI1:21:39#10
2015Capital City River RunLansingMI1:18:42#9
201415th Annual Rock CF Rivers Half Marathon & 5KGrosse IleMI1:20:44#6
2014Bruckelaufe - The Bridge RaceFrankenmuthMI1:22:30#4
2014Back to the BeachSterling HeightsMI1:25:11#2
2013Martian Invasion of the RacesDearbornMI1:22:16#12
2013Brooksie Way Half Marathon and 5KAuburn HillsMI1:24:32#18
2013Dahlgren Trail Half MarathonKing GeorgeVA2:55:46#162
2012Brooksie Way Half Marathon and 5KAuburn HillsMI1:24:42#26
2012Let's Move Festival of RacesMacombMI1:27:19#15
2010Martian Invasion of the RacesDearbornMI1:34:48#107
2009Detroit Free Press MarathonDetroitMI1:39:58#306

States Raced

1 race 2 races 3-4 races 5+ races

State Breakdown

MIMichigan
28 races
ILIllinois
4 races
CACalifornia
3 races
VAVirginia
1 race

50-State Challenge

4/ 51 states + DC

47 states to go