HalfRuns
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Richard Koo

MaleTexas1996–2025

42

Total Finishes

15

Different Races

5

States (10%)

1:26:51

PR (6:38/mi)

2:01:24

Average

+0:50:49

Slower (first to last)

Medal House

2014

UTHealth Houston Half Marathon & 10K

1:45:23
#552 overall#434 gender
2012

UTHealth Houston Half Marathon & 10K

1:40:35
#294 overall#239 gender
2012

United Airlines NYC Half

1:59:12
#7658 overall#4873 gender
2010

UTHealth Houston Half Marathon & 10K

1:48:13
#360 overall#274 gender
2007

Summer's Done 13.1

1:48:05
#695 overall#504 gender
2007

AT&T Austin Marathon & Half Marathon

1:48:05
#706 overall#514 gender
2006

UTHealth Houston Half Marathon & 10K

1:48:37
#475 overall#381 gender
2005

Westchester Medical Center Running Festival

2:22:20
#473 overall#249 gender
2005

Rock ‘n’ Roll Philadelphia Half Marathon

2:33:14
#7855 overall#4396 gender
2002

Sunrise Marathon 5K/10K/13.1 SAN FRANCISCO

1:58:03
#622 overall#439 gender
1997

LONG ISLAND MARATHON FESTIVAL

2:03:48
#2529 overall#2011 gender
1996

LONG ISLAND MARATHON FESTIVAL

1:56:30
#1898 overall#1572 gender

Performance Timeline

PR 1:26:51199619972002200520052006200720072010201220122014201520162016201620162017201720172018201820182018201920192019201920202020202120222022202320252025

Complete Race Log

YearRaceStateTimePlace
2025UTHealth Houston Half Marathon & 10KHoustonTX2:47:19#3522
2025UTHealth Houston Half Marathon & 10KHoustonTX2:47:19#3521
2023UTHealth Houston Half Marathon & 10KHoustonTX1:59:24#993
2022UTHealth Houston Half Marathon & 10KHoustonTX1:53:50#932
20222025 Aramco Houston Half Marathon Searchable Finish Line VideoHoustonTX2:18:40#5416
2021UTHealth Houston Half Marathon & 10KHoustonTX1:47:50#727
2020Less Popular Brooklyn Half MarathonBrooklynNY2:00:56#3575
20202025 Aramco Houston Half Marathon Searchable Finish Line VideoHoustonTX2:17:37#6308
2019NYRR Virtual Halfway There 13.1MAnywhereNY1:30:59#247
2019UTHealth Houston Half Marathon & 10KHoustonTX1:51:52#1001
2019Summer's Done 13.1AustinTX1:55:50#1502
20192025 Aramco Houston Half Marathon Searchable Finish Line VideoHoustonTX2:12:50#4883
2018The Unforgettable Staten Island Half MarathonStaten IslandNY1:26:51#346
2018The Woodlands MarathonThe WoodlandsTX1:50:36#530
2018UTHealth Houston Half Marathon & 10KHoustonTX1:53:41#853
20182025 Aramco Houston Half Marathon Searchable Finish Line VideoHoustonTX2:15:38#4611
2017UTHealth Houston Half Marathon & 10KHoustonTX1:50:57#807
2017Storm the Dam Trail RunEl DoradoKS2:14:15#26
20172025 Aramco Houston Half Marathon Searchable Finish Line VideoHoustonTX2:15:56#4122
2016United Airlines NYC HalfNew YorkNY1:37:54#1979
20162025 Aramco Houston Half Marathon Searchable Finish Line VideoHoustonTX1:44:19#826
2016UTHealth Houston Half Marathon & 10KHoustonTX1:50:54#660
2016The Woodlands MarathonThe WoodlandsTX2:10:33#1573
20152025 Aramco Houston Half Marathon Searchable Finish Line VideoHoustonTX1:45:58#911
2014UTHealth Houston Half Marathon & 10KHoustonTX1:45:23#552
2012UTHealth Houston Half Marathon & 10KHoustonTX1:40:35#294
2012United Airlines NYC HalfNew YorkNY1:59:12#7658
2010UTHealth Houston Half Marathon & 10KHoustonTX1:48:13#360
2007Summer's Done 13.1AustinTX1:48:05#695
2007AT&T Austin Marathon & Half Marathon—1:48:05#706
2006UTHealth Houston Half Marathon & 10KHoustonTX1:48:37#475
2005Westchester Medical Center Running FestivalWhite PlainsNY2:22:20#473
2005Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphiaPA2:33:14#7855
2002Sunrise Marathon 5K/10K/13.1 SAN FRANCISCOSan FranciscoCA1:58:03#622
1997LONG ISLAND MARATHON FESTIVALEast MeadowNY2:03:48#2529
1996LONG ISLAND MARATHON FESTIVALEast MeadowNY1:56:30#1898

States Raced

1 race 2 races 3-4 races 5+ races

State Breakdown

TXTexas
24 races
NYNew York
8 races
CACalifornia
1 race
PAPennsylvania
1 race
KSKansas
1 race

50-State Challenge

5/ 50 states

45 states to go