50 mile races in Colorado

The 24 50 mile ultramarathons in Colorado, with each one's climb, cutoff and date. Every race links to its own page, where you can see how it fits the runner you are now.

Race	Distance	Where	Date	Climb	Cutoff
Run Rabbit Run 50 Mile Endurance Run	50 Miles	Steamboat Springs, CO	Sep 18, 2026	7,822 ft	15 h
Crested Butte Ultra 50 Mile	50 Mile	Crested Butte, CO	Sep 26, 2026	8,301 ft	15 h
Red Feather Trail Jamboree 50 Mile	50 Mile	Red Feather Lakes, CO	Sep 26, 2026	8,500 ft	16 h
Sangre de Cristo 50 Mile	50 Mile	Westcliffe, CO	Sep 26, 2026	10,000 ft	20 h
The Bear Chase 50 Mile	50 Mile	Lakewood, CO	Oct 3, 2026	3,470 ft	15 h
Indian Creek Fifties 50 Mile	50 Mile	Sedalia, CO	Oct 17, 2026	10,122 ft	14 h
Kessel Run Ultra Race	50 Miles	Fruita, CO	Nov 7, 2026	5,177 ft	14 h
NoCo Urban Ultra and Relay	50 Miles	Greeley, CO	Apr 11, 2027	400 ft	15.75 h
Falcon 50	50 Miles	Colorado Springs, CO	Apr 24, 2027	—	—
Collegiate Peaks 50 Mile	50 Mile	Buena Vista, CO	May 1, 2027	7,000 ft	12 h
Quad Rock 50	50 Mile	Fort Collins, CO	May 8, 2027	11,000 ft	14 h
Ram Party 55 Mile	55 Mile	Colorado Springs, CO	May 15, 2027	6,964 ft	17 h
North Fork 50 Mile	50 Mile	Pine, CO	May 29, 2027	6,425 ft	14 h
Mace’s Hideout 100	50 Miles	Beulah, CO	Jun 5, 2027	—	13.5 h
Weld Your Mettle Running Festival	50 Miles	Windsor, CO	Jun 5, 2027	—	14 h
San Juan Solstice 50	50 Mile	Lake City, CO	Jun 19, 2027	12,800 ft	16 h
Silverheels Last Call 50 Mile	50 Mile	Como, CO	Jul 9, 2027	9,186 ft	23 h
Leadville Silver Rush 50	50 Mile	Leadville, CO	Jul 10, 2027	8,000 ft	14 h
Ouray 50 Mile Endurance Run	50 Mile	Ouray, CO	Jul 16, 2027	23,582 ft	24 h
Creede 100	50 Miles	Creede, CO	Jul 24, 2027	—	13.5 h
Grand Mesa Ultras 50 Mile	50 Mile	Cedaredge, CO	Jul 24, 2027	3,971 ft	14 h
Pikes Peak Ultra 50 Mile	50 Mile	Colorado Springs, CO	Jul 24, 2027	11,759 ft	15 h
Sheep Mountain 50 Mile	50 Mile	Fairplay, CO	Jul 31, 2027	9,600 ft	16 h
Roxborough Ultras	50 Miles	Littleton, CO	Aug 14, 2027	8,450 ft	16 h