Outdoor X 12 Hour Endurance Run

A 12-hour endurance race on a flat 2.7 mile loop course! Two levels of finisher medals! 4% bike path, 96% grass / trail double track.

Upcoming Races

Oct 3 2026
12 Hours
Multiple Loop
1 Elevation Rating
Flat or nearly flat
2 Surface Rating
Mostly groomed trail or dirt roads
Oct 3 2026
12 Hours (Ruck)
Multiple Loop
1 Elevation Rating
Flat or nearly flat
2 Surface Rating
Mostly groomed trail or dirt roads

Results

12 Hours

Date Finishers Top Result (F) Top Result (M)
10/04/25 65 71.5 79.75
10/04/25 (Ruck) 1 46.75
10/05/24 67 66.25 76.5
10/07/23 67 75.5 61
10/01/22 79 59 74
10/02/21 48 56.7 64.8
10/03/20 Race Cancelled
10/05/19 77 64.9 69
10/06/18 67 62.83 64.23
10/07/17 62 56.8 63.6
10/01/16 44 59.611 67.744
10/03/15 (Outdoor Experience 12 Hour Endurance Run) 41 67 73
10/05/13 32 57.34 70.02

Weekly Newsletter

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

Recent Results

Run The Rim
Arnold, CA - 21 finishers
50 KM
Run Comfy Numb Trail Race
Whistler, BC - 68 finishers
50 KM
Kettlefoot
Mountain City, TN - 28 finishers
50 KM
Rabid Raccoon 100
Beaver Falls, PA - 275 finishers
100 Miles | 100 KM
North Fork 50 Mile/50K
Pine, CO - 255 finishers
50 Miles | 50 KM
Cinderella Trail - Spring
Oakland, CA - 28 finishers
50 KM
The Full Mo
Sheridan, IN - 190 finishers
50 KM
Hoof It on the Hill
Cherry Creek, NY - 9 finishers
52 KM
Spence Mountain Run
Klamath Falls, OR - 11 finishers
50 KM
View All Results