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JD
James Duffy
MaleNew York1998–2026
55
Total Finishes
31
Distinct Races
14
States (27%)
1:29:35
PR (6:50/mi)
2:00:56
Average
+0:06:48
Slower (first to last)
Medal House
2001
NYCRUNS Brooklyn Ice Cream Social Half Marathon
1:51:05
#914 overall#769 gender
2000
NYCRUNS Brooklyn Ice Cream Social Half Marathon
1:52:11
#926 overall#755 gender
2000
Rock ‘n’ Roll Philadelphia Half Marathon
2:00:10
#4332 overall#2982 gender
2000
The Unforgettable Staten Island Half Marathon!
2:03:56
#1949 overall#1430 gender
2000
NYRR Fred Lebow Half Marathon
2:09:31
#3556 overall#2416 gender
2000
2025 500 Festival Running Events
2:16:39
#5015 overall#3738 gender
1999
NYCRUNS Brooklyn Ice Cream Social Half Marathon
1:42:36
#482 overall#441 gender
1999
Rock ‘n’ Roll Philadelphia Half Marathon
1:44:10
#1860 overall#1551 gender
1999
The LESS Popular Brooklyn Half Marathon!
1:48:11
#824 overall#655 gender
1999
2025 500 Festival Running Events
1:55:38
#3942 overall#3193 gender
1998
Gar Williams Half Marathon
1:53:51
#84 overall#64 gender
1998
The Unforgettable Staten Island Half Marathon!
1:56:07
#1250 overall#955 gender
Performance Timeline
Complete Race Log
| Year | Race | State | Time | Place |
|---|---|---|---|---|
| 2026 | Run The BluegrassLexington | KY | — | #337 |
| 2024 | The LESS Popular Brooklyn Half Marathon!Brooklyn | NY | 1:40:01 | #3951 |
| 2024 | Historic Half Training (sponsored by FARC)Fredericksburg | VA | 1:51:59 | #487 |
| 2024 | Philadelphia MarathonPhiladelphia | PA | 2:00:39 | #3954 |
| 2023 | Kentucky Derby Festival Race WeekendLouisville | KY | 1:29:35 | #99 |
| 2023 | Duke City MarathonAlbuquerque | NM | 1:57:21 | #192 |
| 2023 | Druthers Helderberg to Hudson Half MarathonAltamont | NY | 2:23:16 | #1076 |
| 2023 | AdventHealth Presents the Central Florida Legends Marathon, Half Marathon and 5KDeBary | FL | 2:58:17 | #194 |
| 2022 | OC Marathon - Half Marathon - 5KNewport Beach | CA | 1:48:55 | #562 |
| 2022 | Nationwide Children's Hospital Columbus Marathon & 1/2 Marathon, Jesse Owens 5K, 1 Mile & Kids RunColumbus | OH | 1:54:41 | #1612 |
| 2021 | OC Marathon - Half Marathon - 5KNewport Beach | CA | 1:42:52 | #363 |
| 2021 | Nationwide Children's Hospital Columbus Marathon & 1/2 Marathon, Jesse Owens 5K, 1 Mile & Kids RunColumbus | OH | 2:00:46 | #1748 |
| 2019 | OC Marathon - Half Marathon - 5KNewport Beach | CA | 1:44:12 | #373 |
| 2019 | Covered Bridges Half MarathonWoodstock | VT | 2:20:56 | #1476 |
| 2019 | Love Run Half MarathonPhiladelphia | PA | 2:37:14 | #5713 |
| 2018 | Eversource Hartford Marathon, Half Marathon, Relay & Charity 5KHartford | CT | 1:58:59 | #1541 |
| 2017 | Eversource Hartford Marathon, Half Marathon, Relay & Charity 5KHartford | CT | 1:56:12 | #1130 |
| 2017 | Boston's Run To RememberBoston | MA | 2:11:44 | #2939 |
| 2016 | Eversource Hartford Marathon, Half Marathon, Relay & Charity 5KHartford | CT | 2:11:17 | #2798 |
| 2015 | Rockfest Half MarathonHampton Beach | NH | 1:54:21 | #1052 |
| 2015 | Rock 'n' Roll Chicago Half MarathonChicago | IL | 1:56:45 | #1443 |
| 2014 | Eversource Hartford Marathon, Half Marathon, Relay & Charity 5KHartford | CT | 2:03:59 | #2710 |
| 2013 | 17th Seashore Classic 1/2 Marathon, 2-person Relay & 5k Run/WalkLewes | DE | 1:59:20 | #81 |
| 2013 | United Airlines NYC HalfNew York | NY | 2:02:00 | #7738 |
| 2013 | Rock n Roll NashvilleNashville | TN | 2:02:50 | #4479 |
| 2012 | Boston's Run To RememberBoston | MA | 1:50:28 | #1103 |
| 2012 | Rock 'n' Roll Washington DCWashington | DC | 1:59:10 | #4384 |
| 2011 | 17th Annual Myrtle Beach Mini Marathon & Coastal 5KMyrtle Beach | SC | 1:43:22 | #198 |
| 2011 | Delaware & Lehigh Heritage Half Marathon Walk and RunSlatington | PA | 1:44:11 | #50 |
| 2011 | Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphia | PA | 1:44:48 | #2319 |
| 2011 | The LESS Popular Brooklyn Half Marathon!Brooklyn | NY | 2:03:03 | #3458 |
| 2011 | Urban Wildland Half Marathon & 5K (Richfield, MN)Richfield | MN | 2:06:29 | #554 |
| 2010 | Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphia | PA | 1:46:06 | #1756 |
| 2010 | NYCRUNS Brooklyn Ice Cream Social Half MarathonBrooklyn | NY | 2:22:27 | #2552 |
| 2010 | 2027 Walt Disney World® Marathon WeekendOrlando | FL | 2:29:03 | #7348 |
| 2009 | Novo Nordisk New Jersey MarathonLong Branch | NJ | 1:49:28 | #713 |
| 2009 | Philadelphia MarathonPhiladelphia | PA | 2:00:09 | #2283 |
| 2008 | Novo Nordisk New Jersey MarathonLong Branch | NJ | 1:44:32 | #271 |
| 2006 | Maine Marathon, Half Marathon and Marathon RelayPortland | ME | 1:46:20 | #332 |
| 2006 | Rock 'n' Roll Chicago Half MarathonChicago | IL | 2:02:54 | #3381 |
| 2005 | Cook Forest Half Marathon & 5KCooksburg | PA | 2:04:42 | #142 |
| 2004 | The LESS Popular Brooklyn Half Marathon!Brooklyn | NY | 2:01:01 | #1812 |
| 2004 | The Unforgettable Staten Island Half Marathon!Staten Island | NY | 2:05:46 | #2123 |
| 2003 | NYCRUNS Brooklyn Ice Cream Social Half MarathonBrooklyn | NY | 1:55:20 | #1291 |
| 2002 | The Unforgettable Staten Island Half Marathon!Staten Island | NY | 1:54:28 | #1065 |
| 2002 | NYCRUNS Brooklyn Ice Cream Social Half MarathonBrooklyn | NY | 1:56:20 | #1284 |
| 2002 | The LESS Popular Brooklyn Half Marathon!Brooklyn | NY | 1:59:03 | #2174 |
| 2002 | Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphia | PA | 2:07:41 | #4497 |
| 2002 | NYRR Fred Lebow Half MarathonNew York | NY | 2:14:41 | #3423 |
| 2001 | NYCRUNS Brooklyn Ice Cream Social Half MarathonBrooklyn | NY | 1:51:05 | #914 |
| 2001 | Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphia | PA | 1:55:02 | #3253 |
| 2001 | The LESS Popular Brooklyn Half Marathon!Brooklyn | NY | 2:08:52 | #2161 |
| 2001 | NYRR Fred Lebow Half MarathonNew York | NY | 2:15:02 | #3764 |
| 2000 | NYCRUNS Brooklyn Ice Cream Social Half MarathonBrooklyn | NY | 1:52:11 | #926 |
| 2000 | Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphia | PA | 2:00:10 | #4332 |
| 2000 | The Unforgettable Staten Island Half Marathon!Staten Island | NY | 2:03:56 | #1949 |
| 2000 | NYRR Fred Lebow Half MarathonNew York | NY | 2:09:31 | #3556 |
| 2000 | 2025 500 Festival Running EventsIndianapolis | IN | 2:16:39 | #5015 |
| 1999 | NYCRUNS Brooklyn Ice Cream Social Half MarathonBrooklyn | NY | 1:42:36 | #482 |
| 1999 | Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphia | PA | 1:44:10 | #1860 |
| 1999 | The LESS Popular Brooklyn Half Marathon!Brooklyn | NY | 1:48:11 | #824 |
| 1999 | 2025 500 Festival Running EventsIndianapolis | IN | 1:55:38 | #3942 |
| 1998 | Gar Williams Half MarathonPotomac | MD | 1:53:51 | #84 |
| 1998 | The Unforgettable Staten Island Half Marathon!Staten Island | NY | 1:56:07 | #1250 |
States Raced
1 race 2 races 3-4 races 5+ races
State Breakdown
NYNew York
21 racesPAPennsylvania
11 racesCTConnecticut
4 racesCACalifornia
3 racesFLFlorida
2 racesILIllinois
2 racesINIndiana
2 racesKYKentucky
2 racesMAMassachusetts
2 racesNJNew Jersey
2 racesOHOhio
2 racesMDMaryland
1 raceMNMinnesota
1 raceVAVirginia
1 race50-State Challenge
14/ 51 states + DC
37 states to go