6 Hours Ultra Running Events in Colorado

All 50 KM 50 Miles 100 KM 100 Miles 6 Hours 12 Hours 24 Hours

Date	Event	City	Distances
06/15/24	The Ol' College Try 24 Hour Ultra	Denver	6 Hours , 12 Hours , 24 Hours
08/29/24	Front Range Ultra Dayze	Loveland	6 Hours , 12 Hours , 24 Hours , 48 Hours , 72 Hours , 100 Hours , 100 Miles , 200 Miles
11/02/24	Colorado 24 Hour Run	Fort Collins	6 Hours , 12 Hours , 24 Hours
02/15/25	Stories Trail Runs	Colorado Springs	6 Hours , 15 Hours , 30 Hours

Date	Event	City	Distances
04/06/24	Run the Ranch	Loveland	6 Hours , 12 Hours
02/25/24	Running Up for Air - Staunton Rocks	Pine	6 Hours , 12 Hours , 24 Hours
08/28/21	Lincoln Mountain Endurance Run	Larkspur	6 Hours , 12 Hours
05/22/21	Castlewood Canyon Fun Run	Franktown	6 Hours , 10 Hours
06/06/20	Lincoln Mountain Trail Run	Larkspur	6 Hours
07/06/18	Steep Camp (Silverton 1000)	Silverton	6 Hours , 12 Hours , 24 Hours , 48 Hours , 72 Hours , 144 Hours , 100 Miles
10/11/14	24 Hours of Boulder	Boulder	6 Hours , 12 Hours , 24 Hours , 50 KM , 100 KM , 100 Miles
06/29/13	Silverton 6/12/24 Hour Mountain Runs	Silverton	6 Hours , 12 Hours , 24 Hours

Mountains to Sea Challenge	50K
Zion Ultras and Trail Half Marathon	50K
Peterson Ridge Rumble	40M
Kal-Haven	33.5M
Gorge Waterfalls	50K
Napa Valley 50k	50K
TNT - Toughest N' Texas Trail Runs	50K
Spring SOMO Timed Trail Races	6H
SPASM Lake Chabot Trail Run	50K
Ouachita Trail	50M
Ouachita Trail	50K
Lake McMurtry Run	100K
Lake McMurtry Run	50K
New River Trail Races	50K
Gorge Waterfalls	100K
Traprock 50	50K
James River Trail Runs	50K
Serengeti Trail Races	50K
Serengeti Trail Races	50M
Rattler Trail Race	50K