HalfRuns
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Jeff Duyn

MaleMaryland2013–2026

13

Total Finishes

5

Different Races

3

States (6%)

1:22:19

PR (6:17/mi)

1:25:48

Average

+0:02:37

Slower (first to last)

Medal House

2025

Parks Half Marathon

1:27:44
#46 overall#40 gender
2025

Rock 'n' Roll Washington DC

1:29:15
#315 overall#275 gender
2024

Parks Half Marathon

1:25:03
#42 overall#38 gender
2023

Parks Half Marathon

1:32:15
#54 overall#47 gender
2021

MCRRC Riley's Rumble Half Marathon

1:22:19
#8 overall#8 gender
2018

MCRRC Riley's Rumble Half Marathon

1:24:17
#4 overall#4 gender
2018

Harpers Ferry Half Marathon & 5K

1:27:55
#2 overall#2 gender
2017

MCRRC Riley's Rumble Half Marathon

1:23:10
#12 overall#12 gender
2016

Parks Half Marathon

1:23:29
#20 overall#20 gender
2016

MCRRC Riley's Rumble Half Marathon

1:24:37
#7 overall#7 gender
2015

B&A Trail Marathon and Half Marathon

1:22:43
#6 overall#6 gender
2013

Parks Half Marathon

1:24:59
#45 overall#42 gender

Performance Timeline

PR 1:22:192013201520162016201720182018202120232024202520252026

Complete Race Log

YearRaceStateTimePlace
2026Rock 'n' Roll Washington DCWashingtonDC1:27:36#224
2025Parks Half MarathonRockvilleMD1:27:44#46
2025Rock 'n' Roll Washington DCWashingtonDC1:29:15#315
2024Parks Half MarathonRockvilleMD1:25:03#42
2023Parks Half MarathonRockvilleMD1:32:15#54
2021MCRRC Riley's Rumble Half MarathonBoydsMD1:22:19#8
2018MCRRC Riley's Rumble Half MarathonBoydsMD1:24:17#4
2018Harpers Ferry Half Marathon & 5KHarpers FerryWV1:27:55#2
2017MCRRC Riley's Rumble Half MarathonBoydsMD1:23:10#12
2016Parks Half MarathonRockvilleMD1:23:29#20
2016MCRRC Riley's Rumble Half MarathonBoydsMD1:24:37#7
2015B&A Trail Marathon and Half MarathonSeverna ParkMD1:22:43#6
2013Parks Half MarathonRockvilleMD1:24:59#45

States Raced

1 race 2 races 3-4 races 5+ races

State Breakdown

MDMaryland
10 races
DCDistrict of Columbia
2 races
WVWest Virginia
1 race

50-State Challenge

3/ 51 states + DC

48 states to go