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BO
Brian O'Sullivan
MaleColorado2002–2025
33
Total Finishes
27
Different Races
10
States (20%)
1:23:56
PR (6:24/mi)
1:50:59
Average
+1:09:55
Slower (first to last)
Medal House
2013
Dirty Half Marathon
1:48:00
#107 overall#87 gender
2013
2025 Disney Princess Half Marathon Weekend presented by CORKCICLE®
2:24:03
#3622 overall#348 gender
2011
NYRR Fred Lebow Half Marathon
1:25:34
#104 overall#103 gender
2011
Liberty Waterfront Half Marathon and 5K Run
1:28:22
#71 overall#68 gender
2011
U.S. Polo Assn. Palm Beaches Marathon
2:15:12
#900 overall#470 gender
2011
The Runners Den Scottsdale 1/2 Marathon & 5K
2:51:12
#1022 overall#553 gender
2010
The LESS Popular Brooklyn Half Marathon!
1:23:56
#92 overall#89 gender
2010
Liberty Waterfront Half Marathon and 5K Run
1:26:06
#64 overall#59 gender
2007
Rock ‘n’ Roll Denver Marathon & 1/2 Marathon
2:30:25
#2499 overall#1089 gender
2005
Lake Placid Classic Half Marathon, 10K & 5K
1:32:05
#36 overall#32 gender
2005
North Shore Classic
1:50:54
#240 overall#188 gender
2002
Liberty Waterfront Half Marathon and 5K Run
1:28:30
#119 overall#107 gender
Performance Timeline
Complete Race Log
| Year | Race | State | Time | Place |
|---|---|---|---|---|
| 2025 | Run Roanoke ResultsRoanoke | VA | 1:39:06 | #25 |
| 2025 | 2026 Chessie Trail Marathon, Half Marathon, 10K, 5K, & 26.2 RelayLexington | VA | 1:39:06 | #25 |
| 2025 | Chi Town Half Marathon & 10KChicago | IL | 1:39:36 | #155 |
| 2025 | Steamboat Springs Marathon/Half Marathon/10KSteamboat Springs | CO | 1:44:57 | #72 |
| 2025 | Philadelphia MarathonPhiladelphia | PA | 1:49:07 | #1942 |
| 2025 | Buckeye MarathonBuckeye | AZ | 2:38:25 | #265 |
| 2024 | NYCRUNS Brooklyn Ice Cream Social Half MarathonBrooklyn | NY | 1:33:49 | #669 |
| 2024 | The Colorado MarathonFort Collins | CO | 1:37:27 | #70 |
| 2024 | 2026 Napa to Sonoma Wine Country Half Marathon & Rosé 5KNapa | CA | 1:38:27 | #70 |
| 2023 | Horsetooth Half Marathon - Presented by Fort Collins ConnexionFort Collins | CO | 1:41:47 | #224 |
| 2023 | HRCA Backcountry Wilderness Half MarathonLone Tree | CO | 1:51:43 | #79 |
| 2023 | B.A.A. Half MarathonBoston | MA | 1:55:27 | #1930 |
| 2023 | All-Out Dog DaysWestminster | CO | 2:10:40 | #49 |
| 2022 | The Toyota Super Half Marathon™& Game Day 5K™Colorado Springs | CO | 1:36:44 | #50 |
| 2021 | Horsetooth Half Marathon - Presented by Fort Collins ConnexionFort Collins | CO | 1:42:27 | #188 |
| 2017 | IMT Des Moines MarathonDes Moines | IA | 1:32:35 | #96 |
| 2017 | Rock 'n' Roll Las VegasLas Vegas | NV | 2:03:53 | #3008 |
| 2017 | The Giant RaceSan Francisco | CA | 2:05:31 | #931 |
| 2016 | IMT Des Moines MarathonDes Moines | IA | 1:35:43 | #148 |
| 2016 | Rock 'n' Roll Las VegasLas Vegas | NV | 2:06:40 | #3575 |
| 2015 | Rock 'n' Roll Las VegasLas Vegas | NV | 2:14:45 | #6584 |
| 2013 | Dirty Half MarathonBend | OR | 1:48:00 | #107 |
| 2013 | 2025 Disney Princess Half Marathon Weekend presented by CORKCICLE®Orlando | FL | 2:24:03 | #3622 |
| 2011 | NYRR Fred Lebow Half MarathonNew York | NY | 1:25:34 | #104 |
| 2011 | Liberty Waterfront Half Marathon and 5K RunJersey City | NJ | 1:28:22 | #71 |
| 2011 | U.S. Polo Assn. Palm Beaches MarathonWest Palm Beach | FL | 2:15:12 | #900 |
| 2011 | The Runners Den Scottsdale 1/2 Marathon & 5KScottsdale | AZ | 2:51:12 | #1022 |
| 2010 | The LESS Popular Brooklyn Half Marathon!Brooklyn | NY | 1:23:56 | #92 |
| 2010 | Liberty Waterfront Half Marathon and 5K RunJersey City | NJ | 1:26:06 | #64 |
| 2007 | Rock ‘n’ Roll Denver Marathon & 1/2 MarathonDenver | CO | 2:30:25 | #2499 |
| 2005 | Lake Placid Classic Half Marathon, 10K & 5KLake Placid | NY | 1:32:05 | #36 |
| 2005 | North Shore ClassicHighland Park | IL | 1:50:54 | #240 |
| 2002 | Liberty Waterfront Half Marathon and 5K RunJersey City | NJ | 1:28:30 | #119 |
States Raced
1 race 2 races 3-4 races 5+ races
State Breakdown
COColorado
8 racesNYNew York
4 racesNJNew Jersey
3 racesNVNevada
3 racesAZArizona
2 racesCACalifornia
2 racesFLFlorida
2 racesIAIowa
2 racesMAMassachusetts
1 raceOROregon
1 race50-State Challenge
10/ 51 states + DC
41 states to go