Jen O'Brien (F43)

2026

2 Races | 62 mi.

The Ripper - Sunrise to Sunset

May 2nd 2026
| Pocomoke, MD
Duration
14 Hours
Overall
41 / 51
Division (F)
28 / 33
31

The Algonquin 50K

Feb 7th 2026
| Pocomoke City, MD
Distance
50 KM
Overall
151 / 201
Division (F)
51 / 74
7:24:25

2025

2 Races | 64 mi.

The Ripper - Sunrise to Sunset

May 10th 2025
| Pocomoke, MD
Duration
14 Hours
Overall
29 / 48
Division (F)
14 / 23
33

The Algonquin 50K

Feb 8th 2025
| Pocomoke City, MD
Distance
50 KM
Overall
95 / 228
Division (F)
30 / 104
6:39:38

2024

2 Races | 48 mi.

The Pemberton 24

Sep 20th 2024
| Salisbury, MD
Duration
24 Hours
Overall
75 / 27
Division (F)
36 / 119
17

The Algonquin 50K

Feb 10th 2024
| Pocomoke City, MD
Distance
50 KM
Overall
140 / 212
Division (F)
55 / 96
7:04:00

2023

1 Race | 31 mi.

The Algonquin 50K

Feb 4th 2023
| Pocomoke City, MD
Distance
50 KM
Overall
86 / 195
Division (F)
33 / 88
6:39:36

2022

1 Race | 31 mi.

The Algonquin 50K

Feb 12th 2022
| Pocomoke City, MD
Distance
50 KM
Overall
108 / 200
Division (F)
47 / 97
6:58:52

2021

1 Race | 31 mi.

The Algonquin 50K

Feb 13th 2021
| Pocomoke City, MD
Distance
50 KM
Overall
120 / 140
Division (F)
49 / 61
7:45:36

2020

1 Race | 31 mi.

The Algonquin 50K

Feb 8th 2020
| Pocomoke City, MD
Distance
50 KM
Overall
223 / 252
Division (F)
96 / 114
7:48:14
10
Races
6y 2m 25d
Longevity
298
Lifetime Miles

Personal Bests

50k (7)
6:39:36
2023
24hr (1)
17
2024

Distance by Year

2026
62 Miles
2 Races
2025
64 Miles
2 Races
2024
48 Miles
2 Races
2023
31 Miles
1 Race
2022
31 Miles
1 Race
2021
31 Miles
1 Race
2020
31 Miles
1 Race

Multiple Performances

2026
28th Place
2025
14th Place
2026
51st Place
2025
30th Place
2024
55th Place
2023
33rd Place
2022
47th Place
2021
49th Place
2020
96th Place

Weekly Newsletter

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

Recent Results

Infinitus
Ripton, VT - 36 finishers
100 Miles | 88 KM
Lake Tye Challenge
Monroe, WA - 25 finishers
12 Hours | 6 Hours
High Noon Showdown
Enoree, SC - 17 finishers
12 Hours | 6 Hours | 6 Hours
Spence Mountain Run
Klamath Falls, OR - 11 finishers
50 KM
Hotfoot Hamster
Buckeye, AZ - 94 finishers
24 Hours | 12 Hours | 6 Hours
Great Mansfield Outdoors
Mansfield, ON - 56 finishers
100 KM | 50 KM
Worlds End Ultramarathons
Forksville, PA - 299 finishers
100 KM | 50 KM
Blackfoot Ultra
Edmonton, AB - 124 finishers
100 KM | 50 Miles | 50 KM
The Full Mo
Sheridan, IN - 190 finishers
50 KM
Echo Valley Runs
Chelan, WA - 80 finishers
50 KM
View All Results