Colin O’brien (M40)

2026

1 Race | 250 mi.

Cocodona

May 4th 2026
| Black Canyon City, AZ
Distance
250 Miles
Overall
88 / 268
Division (M)
67 / 192
100:05:54

2025

2 Races | 300 mi.

Rogue Gorge

Oct 18th 2025
| Union Creek, OR
Distance
50 Miles
Overall
41 / 111
Division (M)
32 / 77
10:03:37

Cocodona

May 5th 2025
| Black Canyon City, AZ
Distance
250 Miles
Overall
129 / 192
Division (M)
95 / 134
115:19:03

2024

1 Race | 31 mi.

Tiger Claw

May 10th 2024
| Issaquah, WA
Distance
50 KM
Overall
25 / 98
Division (M)
18 / 66
6:45:14

2023

3 Races | 92 mi.

Volcanic 50

Aug 5th 2023
| Cougar, WA
Distance
50 KM
Overall
28 / 222
Division (M)
22 / 152
7:28:35

Gulch Countdown

Jun 17th 2023
| Mukilteo, WA
Duration
Backyard
Overall
14 / 10
Division (M)
12 / 12
26.21

Squak In The Dark

May 27th 2023
| Issaquah, WA
Duration
8 Hours
Overall
4 / 13
Division (M)
3 / 15
34.26

2022

2 Races | 81 mi.

Bold Coast Bash Trail Race

Nov 13th 2022
| Cutler, ME
Distance
50 KM
Overall
1 / 25
Division (M)
1 / 19
6:44:15

Blood Root Ultra

May 14th 2022
| Pittsfield, VT
Distance
50 Miles
Overall
4 / 10
Division (M)
3 / 9
11:53:12

2021

2 Races | 62 mi.

Megunticook Trail Festival

Sep 11th 2021
| Camden, ME
Distance
50 KM
Overall
9 / 69
Division (M)
9 / 39
6:20:56

Hootenanny 50k

May 23rd 2021
| Missoula, MT
Distance
50 KM
Overall
45 / 69
Division (M)
32 / 41
6:39:45
11
Races
4y 11m 17d
Longevity
816
Lifetime Miles

Personal Bests

50k (5)
6:20:56
2021
50m (2)
10:03:37
2025
Backyard (1)
26.21
2023

Distance by Year

2026
250 Miles
1 Race
2025
300 Miles
2 Races
2024
31 Miles
1 Race
2023
92 Miles
3 Races
2022
81 Miles
2 Races
2021
62 Miles
2 Races

Multiple Performances

2026
67th Place
2025
95th Place

6:44:15

50 KM

Achievements are awarded for races with 25 or more finishers and courses with 200 or more finishers.

Masters: 40-49 / Grand Masters: 50-59 / Senior Grand Masters: 60+

Weekly Newsletter

A roundup of the week's content and most recent race results. Sent once a week on Thursday.

Recent Results

Hoof It on the Hill
Cherry Creek, NY - 9 finishers
52 KM
The Sticks
Norton, KS - 72 finishers
72 Hours | 48 Hours | 24 Hours | 12 Hours | 6 Hours
Spence Mountain Run
Klamath Falls, OR - 11 finishers
50 KM
Yankee Springs Trail Run
Middleville, MI - 60 finishers
100 KM | 50 KM
Pacifico Ultra
Palmdale, CA - 117 finishers
50 KM
Echo Valley Runs
Chelan, WA - 80 finishers
50 KM
Lake to Ocean 100K
Port Mayaka, FL - 19 finishers
100 KM
Lake Tye Challenge
Monroe, WA - 25 finishers
12 Hours | 6 Hours
Hotfoot Hamster
Buckeye, AZ - 94 finishers
24 Hours | 12 Hours | 6 Hours
Worlds End Ultramarathons
Forksville, PA - 299 finishers
100 KM | 50 KM
View All Results