Events
Race Directors

Mike Dufresne (M28)

2026

1 Race | 62 mi.

Sean O'Brien 100k/50M/50k

Jan 31st 2026
| Malibu, CA
Distance
100 KM
Overall
6 / 84
Division (M)
5 / 65
12:18:53
1
Races
0y 0m 0d
Longevity
62
Lifetime Miles

Personal Bests

100k (1)
12:18:53
2026

Distance by Year

2026
62 Miles
1 Race

Multiple Performances

Weekly Newsletter

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

Recent Results

Lake Tye Challenge
Monroe, WA - 25 finishers
12 Hours | 6 Hours
Cinderella Trail - Spring
Oakland, CA - 28 finishers
50 KM
Infinitus
Ripton, VT - 36 finishers
100 Miles | 88 KM
Smith Rock Classic
Terrebonne, OR - 185 finishers
50 Miles | 50 KM
MCW The Tatum Classic
Middletown Township, NJ - 16 finishers
50 KM
The Midwest Ultra Track Classic
Warrensburg, MO - 19 finishers
24 Hours | 12 Hours | 6 Hours
Weld Your Mettle Running Festival
Windsor, CO - 27 finishers
100 Miles | 100 KM | 50 Miles | 50 KM
The Full Mo
Sheridan, IN - 190 finishers
50 KM
Chesterfield Gorge Ultra
West Chesterfield, MA - 120 finishers
100 Miles | 100 KM | 50 Miles | 50 KM
Mohican Trail Run
Loudonville, OH - 251 finishers
100 Miles | 50 Miles
View All Results