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KD
Kevin Duffy
MaleNew Jersey1984–2026
91
Total Finishes
54
Distinct Races
19
States (37%)
1:27:51
PR (6:42/mi)
1:55:56
Average
+0:04:23
Slower (first to last)
Medal House
2002
Grandma's Marathon
1:58:29
#1813 overall#1175 gender
2001
Rock ‘n’ Roll Philadelphia Half Marathon
1:27:51
#419 overall#368 gender
2001
Rock ‘n’ Roll Philadelphia Half Marathon
1:41:45
#1496 overall#1229 gender
2001
Grandma's Marathon
1:54:07
#1248 overall#882 gender
1999
Grandma's Marathon
1:46:30
#727 overall#573 gender
1998
The LESS Popular Brooklyn Half Marathon!
2:03:58
#1444 overall#1051 gender
1995
Grandma's Marathon
1:46:54
#587 overall#425 gender
1995
The LESS Popular Brooklyn Half Marathon!
2:10:00
#1014 overall#794 gender
1993
LONG ISLAND MARATHON FESTIVAL
2:28:52
#4693 overall#3699 gender
1991
Grandma's Marathon
2:06:55
#787 overall#481 gender
1988
The Unforgettable Staten Island Half Marathon!
1:50:01
#854 overall#755 gender
1984
Dayton River Corridor Classic
1:38:32
#811 overall#773 gender
Performance Timeline
Complete Race Log
| Year | Race | State | Time | Place |
|---|---|---|---|---|
| 2026 | War Eagle Run FestAuburn University | AL | 1:33:54 | #88 |
| 2026 | War Eagle Run FestAuburn | AL | 1:33:55 | #88 |
| 2026 | The Jersey City Marathon & Half Marathon Marquee Experience at NewportJersey City | NJ | 1:42:55 | #800 |
| 2025 | War Eagle Run FestAuburn University | AL | 1:33:21 | #59 |
| 2025 | War Eagle Run FestAuburn | AL | 1:33:22 | #59 |
| 2025 | Rocky RunPhiladelphia | PA | 1:43:34 | #373 |
| 2025 | Life Time Chicago Half Marathon + 5KChicago | IL | 2:04:19 | #2753 |
| 2024 | War Eagle Run FestAuburn University | AL | 1:42:20 | #108 |
| 2024 | War Eagle Run FestAuburn | AL | 1:42:21 | #108 |
| 2023 | Montgomery Half MarathonMontgomery | AL | 1:36:48 | #23 |
| 2023 | War Eagle Run FestAuburn University | AL | 1:42:25 | #58 |
| 2023 | War Eagle Run FestAuburn | AL | 1:42:26 | #58 |
| 2022 | Liberty Waterfront Half Marathon and 5K RunJersey City | NJ | 1:43:26 | #407 |
| 2019 | Montgomery Half MarathonMontgomery | AL | 1:28:17 | #10 |
| 2019 | Garavel SoNo Half Marathon | 5KNorwalk | CT | 1:33:53 | #46 |
| 2019 | Cape May Hallowed Half MarathonCape May | NJ | 1:57:36 | #143 |
| 2019 | Trail Half MarathonPinckney | MI | 2:11:58 | #141 |
| 2019 | Druthers Helderberg to Hudson Half MarathonAltamont | NY | 3:07:35 | #2110 |
| 2018 | Trinity Health Probility Ann Arbor Marathon: 5K • 10K • Half-Marathon • Full Marathon • Marathon Relay • Half-Marathon WalkAnn Arbor | MI | 1:39:16 | #49 |
| 2018 | Ann Arbor MarathonAnn Arbor | MI | 1:39:16 | #49 |
| 2018 | Garmin Olathe Marathon, Half Marathon and 10K in the land of OzOlathe | KS | 1:39:46 | #71 |
| 2018 | Yonkers MarathonYonkers | NY | 1:42:59 | #43 |
| 2018 | Pinckney Trail WeekendPinckney | MI | 1:58:54 | #82 |
| 2018 | Liberty Waterfront Half Marathon and 5K RunJersey City | NJ | 1:59:37 | #680 |
| 2018 | Sleepy Hollow Half MarathonSleepy Hollow | NY | 2:06:06 | #414 |
| 2017 | Oklahoma City Memorial MarathonOklahoma City | OK | 1:41:58 | #261 |
| 2017 | The LESS Popular Brooklyn Half Marathon!Brooklyn | NY | 1:47:25 | #6035 |
| 2017 | Flying Pig Pump and RunCincinnati | OH | 1:48:04 | #876 |
| 2017 | Route 66 Marathon & Half Marathon, Marathon RelayTulsa | OK | 1:51:11 | #441 |
| 2017 | Liberty Waterfront Half Marathon and 5K RunJersey City | NJ | 1:53:15 | #600 |
| 2017 | DEXTER-ANN ARBOR RUNDexter | MI | 1:55:45 | #733 |
| 2017 | Rock the RiverFort Lee | NJ | 1:57:47 | #99 |
| 2017 | Cambridge Half Marathon + 5KCambridge | MA | 2:08:53 | #3956 |
| 2017 | Half and Half & Double HalfTulsa | OK | 2:13:17 | #28 |
| 2016 | OC Marathon - Half Marathon - 5KNewport Beach | CA | 1:46:06 | #550 |
| 2016 | TRC Post Oak Lodge Trail ChallengeTulsa | OK | 1:53:15 | #6 |
| 2016 | Liberty Waterfront Half Marathon and 5K RunJersey City | NJ | 1:57:38 | #735 |
| 2016 | Novo Nordisk New Jersey MarathonLong Branch | NJ | 2:00:51 | #1473 |
| 2016 | Camp Chingachgook ChallengeLake George | NY | 2:03:25 | #91 |
| 2016 | Twin Lights Half MarathonGloucester | MA | 2:04:03 | #346 |
| 2015 | Route 66 Marathon & Half Marathon, Marathon RelayTulsa | OK | 1:39:50 | #142 |
| 2015 | Thanksgiving Day Half MarathonAtlanta | GA | 1:41:47 | #584 |
| 2015 | Bluegrass Half MarathonJohnson City | TN | 1:45:47 | #67 |
| 2015 | Rock 'n' Roll New OrleansNew Orleans | LA | 1:46:35 | #553 |
| 2015 | Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphia | PA | 1:47:51 | #1896 |
| 2015 | The Unforgettable Staten Island Half Marathon!Staten Island | NY | 1:50:56 | #2186 |
| 2015 | Half and Half & Double HalfTulsa | OK | 1:56:37 | #6 |
| 2015 | TRC Post Oak Lodge Trail ChallengeTulsa | OK | 1:56:40 | #7 |
| 2015 | NYRR Fred Lebow Half MarathonNew York | NY | 2:04:01 | #2558 |
| 2015 | Run SAN DIEGO 5K/10K/13.1San Diego | CA | 2:11:39 | #2535 |
| 2014 | The Go Hard or Go Home Half Marathon!Brooklyn | NY | 1:37:11 | #15 |
| 2014 | Route 66 Marathon & Half Marathon, Marathon RelayTulsa | OK | 1:45:50 | #240 |
| 2014 | Liberty Waterfront Half Marathon and 5K RunJersey City | NJ | 1:52:18 | #691 |
| 2014 | Half and Half & Double HalfTulsa | OK | 1:58:12 | #9 |
| 2014 | Rock 'n' Roll New OrleansNew Orleans | LA | 1:58:50 | #1545 |
| 2014 | Tache Realty Wicked Half MarathonSalem | MA | 2:03:21 | #388 |
| 2013 | Rock 'n' Roll New OrleansNew Orleans | LA | 1:51:12 | #1115 |
| 2013 | 2025 500 Festival Running EventsIndianapolis | IN | 2:49:08 | #21643 |
| 2012 | Rock 'n' Roll New OrleansNew Orleans | LA | 1:48:46 | #1311 |
| 2012 | The LESS Popular Brooklyn Half Marathon!Brooklyn | NY | 1:52:28 | #4998 |
| 2011 | River Run Half MarathonBerea | OH | 1:43:16 | #159 |
| 2011 | Rock 'n' Roll New OrleansNew Orleans | LA | 1:54:23 | #1704 |
| 2011 | Liberty Waterfront Half Marathon and 5K RunJersey City | NJ | 1:54:31 | #672 |
| 2011 | City to the Sea Half Marathon & 5KSan Luis Obispo | CA | 1:55:15 | #475 |
| 2011 | Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphia | PA | 1:58:06 | #5788 |
| 2010 | Big Lake Half MarathonAlton Bay | NH | 1:42:09 | #125 |
| 2010 | Seacoast Half MarathonPortsmouth | NH | 1:42:36 | #147 |
| 2010 | Manchester City MarathonManchester | NH | 1:43:29 | #158 |
| 2010 | Space Coast Marathon & Half MarathonCocoa | FL | 1:50:20 | #253 |
| 2010 | American Discovery Trail MarathonColorado Springs | CO | 1:55:11 | #126 |
| 2010 | Philadelphia MarathonPhiladelphia | PA | 4:27:22 | #8355 |
| 2009 | Manchester City MarathonManchester | NH | 1:39:48 | #83 |
| 2009 | Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphia | PA | 1:48:28 | #3181 |
| 2008 | The LESS Popular Brooklyn Half Marathon!Brooklyn | NY | 1:43:16 | #1352 |
| 2008 | Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphia | PA | 2:04:00 | #6875 |
| 2006 | Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphia | PA | 1:28:24 | #412 |
| 2006 | Dayton River Corridor ClassicDayton | OH | 2:07:50 | #398 |
| 2005 | Erie MarathonErie | PA | 1:46:03 | #51 |
| 2005 | Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphia | PA | 1:47:00 | #2039 |
| 2005 | Grandma's MarathonDuluth | MN | 1:48:42 | #989 |
| 2005 | The 33rd Annual Varmint Half Marathon & 5KBurkes Garden | VA | 1:55:10 | #46 |
| 2005 | Pikes Peak AscentManitou Springs | CO | 4:31:09 | #933 |
| 2004 | Erie MarathonErie | PA | 1:42:48 | #46 |
| 2004 | Greater St. Louis MarathonSt. Louis | MO | 2:16:32 | #1933 |
| 2003 | Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphia | PA | 1:44:19 | #1782 |
| 2002 | Grandma's MarathonDuluth | MN | 1:58:29 | #1813 |
| 2002 | Life Time Chicago Half Marathon + 5KChicago | IL | 2:08:39 | #2817 |
| 2001 | Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphia | PA | 1:27:51 | #419 |
| 2001 | Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphia | PA | 1:41:45 | #1496 |
| 2001 | Grandma's MarathonDuluth | MN | 1:54:07 | #1248 |
| 1999 | Grandma's MarathonDuluth | MN | 1:46:30 | #727 |
| 1998 | The LESS Popular Brooklyn Half Marathon!Brooklyn | NY | 2:03:58 | #1444 |
| 1995 | Grandma's MarathonDuluth | MN | 1:46:54 | #587 |
| 1995 | The LESS Popular Brooklyn Half Marathon!Brooklyn | NY | 2:10:00 | #1014 |
| 1993 | LONG ISLAND MARATHON FESTIVALEast Meadow | NY | 2:28:52 | #4693 |
| 1991 | Grandma's MarathonDuluth | MN | 2:06:55 | #787 |
| 1988 | The Unforgettable Staten Island Half Marathon!Staten Island | NY | 1:50:01 | #854 |
| 1984 | Dayton River Corridor ClassicDayton | OH | 1:38:32 | #811 |
States Raced
1 race 2 races 3-4 races 5+ races
State Breakdown
NYNew York
14 racesPAPennsylvania
13 racesALAlabama
10 racesNJNew Jersey
10 racesOKOklahoma
9 racesMNMinnesota
6 racesLALouisiana
5 racesMIMichigan
5 racesNHNew Hampshire
4 racesOHOhio
4 racesCACalifornia
3 racesMAMassachusetts
3 racesCOColorado
2 racesILIllinois
2 racesINIndiana
1 raceKSKansas
1 raceMOMissouri
1 raceTNTennessee
1 raceWIWisconsin
0 races50-State Challenge
19/ 51 states + DC
32 states to go