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JK
John Kozak
MaleMassachusetts2009–2025
20
Total Finishes
14
Different Races
6
States (12%)
1:49:07
PR (8:20/mi)
2:07:00
Average
-0:00:32
Faster (first to last)
Medal House
2019
B.A.A. Half Marathon
1:54:44
#1817 overall#1227 gender
2019
Zion Half Marathon
2:07:33
#331 overall
2018
Grand Teton Half Marathon
2:03:26
#332 overall#160 gender
2018
Rock 'n' Roll New Orleans
2:11:57
#2499 overall#1320 gender
2017
Howling Wolf Half Marathon
2:09:25
#159 overall#79 gender
2014
Thanksgiving Day Half Marathon
1:53:50
#1554 overall#1116 gender
2012
Thanksgiving Day Half Marathon
1:50:33
#1577 overall#1172 gender
2011
Thanksgiving Day Half Marathon
2:10:51
#4802 overall#2887 gender
2010
Thanksgiving Day Half Marathon
2:10:50
#4831 overall#3042 gender
2009
Thanksgiving Day Half Marathon
1:56:04
#2666 overall#1875 gender
2008
Rock ‘n’ Roll Philadelphia Half Marathon
1:56:57
#5113 overall#3469 gender
2001
Rock ‘n’ Roll Philadelphia Half Marathon
1:53:19
#3018 overall#2243 gender
Performance Timeline
Complete Race Log
| Year | Race | State | Time | Place |
|---|---|---|---|---|
| 2025 | Hampton Half Marathon & 5KHampton | NH | 1:49:07 | #228 |
| 2025 | Seacoast Half MarathonPortsmouth | NH | 1:51:10 | #230 |
| 2025 | B.A.A. Half MarathonBoston | MA | 1:52:47 | #1689 |
| 2023 | Great Bay Half MarathonNewmarket | NH | 1:50:18 | #66 |
| 2022 | Great Bay Half MarathonNewmarket | NH | 1:50:18 | #66 |
| 2022 | Margarita Half Marathon and 5KPortsmouth | NH | 1:53:56 | #48 |
| 2021 | Rock 'n' Roll Virgina Beach Half MarathonVirginia Beach | VA | 2:42:26 | #2790 |
| 2020 | Stay Home Virtual RaceAnywhere | WA | 1:56:09 | #816 |
| 2019 | B.A.A. Half MarathonBoston | MA | 1:54:44 | #1817 |
| 2019 | Zion Half MarathonSpringdale | UT | 2:07:33 | #331 |
| 2019 | Rock 'n' Roll San DiegoSan Diego | CA | 2:24:54 | #6564 |
| 2019 | Rock 'n' Roll Half Marathon San FranciscoSan Francisco | CA | 2:35:31 | #3244 |
| 2019 | 2025 Aramco Houston Half Marathon Searchable Finish Line VideoHouston | TX | 3:15:59 | #11634 |
| 2018 | Grand Teton Half MarathonJackson | WY | 2:03:26 | #332 |
| 2018 | Rock 'n' Roll New OrleansNew Orleans | LA | 2:11:57 | #2499 |
| 2017 | Howling Wolf Half MarathonStoneham | MA | 2:09:25 | #159 |
| 2014 | Thanksgiving Day Half MarathonAtlanta | GA | 1:53:50 | #1554 |
| 2012 | Thanksgiving Day Half MarathonAtlanta | GA | 1:50:33 | #1577 |
| 2011 | Thanksgiving Day Half MarathonAtlanta | GA | 2:10:51 | #4802 |
| 2010 | Thanksgiving Day Half MarathonAtlanta | GA | 2:10:50 | #4831 |
| 2009 | Thanksgiving Day Half MarathonAtlanta | GA | 1:56:04 | #2666 |
| 2008 | Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphia | PA | 1:56:57 | #5113 |
| 2001 | Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphia | PA | 1:53:19 | #3018 |
States Raced
1 race 2 races 3-4 races 5+ races
State Breakdown
GAGeorgia
5 racesNHNew Hampshire
5 racesMAMassachusetts
3 racesCACalifornia
2 racesVAVirginia
1 raceWYWyoming
1 race50-State Challenge
6/ 51 states + DC
45 states to go