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BO
Brian O'sullivan
MaleColorado2021–2025
9
Total Finishes
5
Distinct Races
3
States (6%)
1:36:44
PR (7:23/mi)
1:41:55
Average
-0:03:21
Faster (first to last)
Medal House
2025
Chi Town Half Marathon & 10K
1:39:36
#155 overall#134 gender
2025
2026 Chessie Trail Marathon, Half Marathon, 10K, 5K, & 26.2 Relay
1:39:06
#25 overall0
2023
Horsetooth Half Marathon - Presented by Fort Collins Connexion
1:41:47
#224 overall0
2023
HRCA Backcountry Wilderness Half Marathon
1:51:43
#79 overall0
2021
Horsetooth Half Marathon - Presented by Fort Collins Connexion
1:42:27
#188 overall0
Performance Timeline
Complete Race Log
| Year | Race | State | Time | Place |
|---|---|---|---|---|
| 2025 | Chi Town Half Marathon & 10KChicago | IL | 1:39:36 | #155 |
| 2025 | 2026 Chessie Trail Marathon, Half Marathon, 10K, 5K, & 26.2 RelayLexington | VA | 1:39:06 | #25 |
| 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 |
| 2021 | Horsetooth Half Marathon - Presented by Fort Collins ConnexionFort Collins | CO | 1:42:27 | #188 |
States Raced
1 race 2 races 3-4 races 5+ races
State Breakdown
COColorado
3 racesILIllinois
1 raceVAVirginia
1 race50-State Challenge
3/ 51 states + DC
48 states to go