HalfRuns
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David Lai

MaleMaryland2005–2026

44

Total Finishes

25

Different Races

8

States (16%)

1:23:17

PR (6:21/mi)

2:01:31

Average

-1:06:06

Faster (first to last)

Medal House

2014

2026 Disneyland® Half Marathon Weekend presented by HONDA

1:48:40
#517 overall#398 gender
2013

Rock 'n' Roll Half Marathon San Francisco

1:46:02
#379 overall#284 gender
2013

2026 Disneyland® Half Marathon Weekend presented by HONDA

1:55:46
#945 overall#681 gender
2012

2026 Disneyland® Half Marathon Weekend presented by HONDA

1:43:59
#438 overall#348 gender
2012

Rock 'n' Roll Half Marathon San Francisco

2:25:57
#2230 overall#1165 gender
2011

Chevron City to Surf for Activ

1:49:04
#911 overall#770 gender
2011

Rock 'n' Roll Las Vegas

2:27:08
#15807 overall#7515 gender
2009

Santa Barbara Half Marathon & 5K

1:54:17
#528 overall#352 gender
2007

2025 Val Nolasco Half Marathon

2:36:48
#618 overall#368 gender
2007

Hibiscus Half Marathon 5m 15K

2:37:31
#520 overall#299 gender
2006

2025 Val Nolasco Half Marathon

3:07:37
#828 overall#451 gender
2005

Sunrise Marathon 5K/10K/13.1 SAN FRANCISCO

2:38:38
#4523 overall#2286 gender

Performance Timeline

PR 1:23:17200520062007200720092011201120122012201320132014201420142014201420162017201820182019201920192020202020212021202120222022202220222022202220222023202320232023202320232023202420242024202420252025202520252026

Complete Race Log

YearRaceStateTimePlace
2026Rock 'n' Roll Washington DCWashingtonDC1:32:32#427
2025Rock 'n' Roll Washington DCWashingtonDC1:26:03#189
2025THE SEVENTH ANNUAL JUNETEENTH HALF MARATHON & 10K (2026)WashingtonDC1:52:43#20
2025United Airlines NYC HalfNew YorkNY2:05:19#14314
2025Schaeffer Half Marathon, 10K, 5K Trail RunGermantownMD2:54:36#137
2024THE SEVENTH ANNUAL JUNETEENTH HALF MARATHON & 10K (2026)WashingtonDC1:53:30#17
2024United Airlines NYC HalfNew YorkNY2:08:05#15303
2024Baltimore Running FestivalBaltimoreMD2:12:56#1885
2024Life Time Chicago Half Marathon + 5KChicagoIL2:16:01#4014
2023The LESS Popular Brooklyn Half Marathon!BrooklynNY1:23:17#477
2023DC Half RacesWashingtonDC1:26:17#134
2023Baltimore Running FestivalBaltimoreMD1:29:40#71
2023THE SEVENTH ANNUAL JUNETEENTH HALF MARATHON & 10K (2026)WashingtonDC1:53:55#12
2023Run MadtownMadisonWI2:06:32#522
2023United Airlines NYC HalfNew YorkNY2:08:06#13478
2023TransRockies RunBuena VistaCO4:49:42#101
2022DC Half RacesWashingtonDC1:26:18#77
2022Allianz Richmond Marathon, CarMax Richmond Half Marathon, & Capital One Richmond 8kRichmondVA1:26:21#111
2022The LESS Popular Brooklyn Half Marathon!BrooklynNY1:26:33#562
2022Rock 'n' Roll Washington DCWashingtonDC1:27:04#141
2022Baltimore Running FestivalBaltimoreMD1:29:39#61
2022Rock 'n' Roll San JoseSan JoseCA2:11:33#1891
2022La Jolla Half Marathon & 5KSan DiegoCA2:15:41#1081
2021DC Half RacesWashingtonDC1:25:50#22
2021The Race Half Marathon & 5KAtlantaGA1:26:08#4
2021Rock 'n' Roll Washington DCWashingtonDC1:26:41#141
2020Historic Half Training (sponsored by FARC)FredericksburgVA1:38:22#77
2020The Unforgettable Staten Island Half Marathon!Staten IslandNY1:46:07#542
2019Baltimore Running FestivalBaltimoreMD1:55:01#1076
2019Rock 'n' Roll Las VegasLas VegasNV1:57:09#1623
2019United Airlines NYC HalfNew YorkNY1:59:36#10444
2018United Airlines NYC HalfNew YorkNY2:10:37#12965
2018The LESS Popular Brooklyn Half Marathon!BrooklynNY2:10:37#16113
2017United Airlines NYC HalfNew YorkNY2:08:49#11218
2016Rock 'n' Roll San DiegoSan DiegoCA2:24:20#8543
20142026 Disneyland® Half Marathon Weekend presented by HONDAAnaheimCA1:48:40#517
2014Rock 'n' Roll Los Angeles Half MarathonLos AngelesCA1:49:38#774
2014Rock 'n' Roll San DiegoSan DiegoCA1:57:39#3331
2014Rock 'n' Roll Half Marathon San FranciscoSan FranciscoCA2:08:23#2720
2014Ronald Mcdonald House 5kIowa CityIA2:25:31#248
2013Rock 'n' Roll Half Marathon San FranciscoSan FranciscoCA1:46:02#379
20132026 Disneyland® Half Marathon Weekend presented by HONDAAnaheimCA1:55:46#945
20122026 Disneyland® Half Marathon Weekend presented by HONDAAnaheimCA1:43:59#438
2012Rock 'n' Roll Half Marathon San FranciscoSan FranciscoCA2:25:57#2230
2011Chevron City to Surf for ActivBurswoodWA1:49:04#911
2011Rock 'n' Roll Las VegasLas VegasNV2:27:08#15807
2009Santa Barbara Half Marathon & 5KSanta BarbaraCA1:54:17#528
20072025 Val Nolasco Half MarathonHonoluluHI2:36:48#618
2007Hibiscus Half Marathon 5m 15KHonoluluHI2:37:31#520
20062025 Val Nolasco Half MarathonHonoluluHI3:07:37#828
2005Sunrise Marathon 5K/10K/13.1 SAN FRANCISCOSan FranciscoCA2:38:38#4523

States Raced

1 race 2 races 3-4 races 5+ races

State Breakdown

CACalifornia
13 races
DCDistrict of Columbia
10 races
NYNew York
10 races
MDMaryland
5 races
HIHawaii
3 races
VAVirginia
2 races
IAIowa
1 race
MIMichigan
0 races

50-State Challenge

8/ 51 states + DC

43 states to go