Find My Ultra

50K races in Colorado

The 48 50K 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.

RaceDistanceWhereDateClimbCutoff
Devil on the Divide 50K50KEmpire, COSep 12, 20266,500 ft11 h
Snow Mountain Ranch 50K50KGranby, COSep 12, 20264,236 ft8.5 h
Crested Butte Ultra 55K55KCrested Butte, COSep 26, 20264,567 ft12 h
Red Feather Trail Jamboree 50K50KRed Feather Lakes, COSep 26, 20264,200 ft11 h
Sangre de Cristo 50K50KWestcliffe, COSep 26, 20266,200 ft16 h
West Line Winder 50K50KBuena Vista, COSep 26, 20264,000 ft10 h
Wild Wahatoya Runs50 KMLa Veta, COSep 26, 20266,700 ft12 h
Estes Epic Trail 50K50KEstes Park, COSep 27, 2026—12 h
Sawatch Ascent50 KMNathrop, COSep 27, 20267,000 ft10 h
Above the Clouds Ultra50 KMWoodland Park, COOct 3, 20264,137 ft11 h
The Bear Chase 50K50KLakewood, COOct 3, 20262,036 ft14 h
Castle Rock Trail Festival50 KMCastle Rock, COOct 3, 20263,223 ft8 h
Sage Burner 50K50KGunnison, COOct 3, 20264,500 ft11 h
Bobcat Trail Race 50k50 KMColorado Springs, COOct 17, 20263,838 ft10 h
Indian Creek Fifties 55K55KSedalia, COOct 17, 20267,185 ft14 h
Bridge Burner Ultra 50K50KCanon City, COOct 24, 20264,200 ft9.5 h
Kessel Run 50 km Ultra Race50 KMFruita, CONov 7, 20263,438 ft10 h
Colorado Cold Rush 50K50KColorado Springs, CONov 21, 20265,500 ft10 h
Sawmill Trail Runs50 KMPine, CODec 5, 20267,490 ft12 h
Desert RATS 50K50KFruita, COApr 10, 20273,660 ft10 h
Rattler Trail Race 50K50KColorado Springs, COApr 17, 20273,838 ft10 h
Cheyenne Mountain Trail Race 50K50KColorado Springs, COApr 24, 20273,700 ft10 h
Royal Gorge Groove50 KMCanon City, COApr 24, 20273,532 ft—
Runs With Scissors Races - CO50 KMBrighton, COApr 24, 2027—9 h
Greenland Trail 50K50KPalmer Lake, COMay 1, 20271,873 ft8 h
Valkyrie Trail Race 50k50 KMColorado Springs, COMay 8, 20274,500 ft10 h
Ram Party 50K50KColorado Springs, COMay 15, 20274,412 ft17 h
Samson's Revenge50 KMEstes Park, COMay 22, 20276,000 ft9 h
North Fork 50K50KPine, COMay 29, 20273,670 ft13 h
The Great Divide Ultra 50K50KDivide, COJun 5, 20274,200 ft11 h
Haul Ass Ultra Running Festival50 KMErie, COJun 5, 2027200 ft12 h
Weld Your Mettle Running Festival50 KMWindsor, COJun 5, 2027—9.5 h
Barr Lake50 KMBrighton, COJun 12, 2027460 ft9 h
Summits Trail Runs55 KMGranby, COJun 12, 20275,805 ft14 h
Ring the Springs 50K50KColorado Springs, COJun 19, 20275,333 ft12 h
John Cappis 50K Fat Ass50 KMSilverton, COJun 26, 202719,000 ft19 h
Power of Four Trail Run50 KMAspen, COJul 17, 2027—9 h
Silverton Alpine 50K50KSilverton, COJul 17, 20274,569 ft11 h
Grand Mesa Ultras 55K55KCedaredge, COJul 24, 20273,376 ft11.5 h
Pikes Peak Ultra 50K50KColorado Springs, COJul 24, 20278,127 ft13.5 h
Aspen Backcountry 50K50KAspen, COJul 31, 20275,512 ft10 h
Sheep Mountain 50K50KFairplay, COJul 31, 20276,200 ft16 h
Winter Park 50K50 KMWinter Park, COAug 7, 20274,370 ft12.5 h
Roxborough Ultras50 KMLittleton, COAug 14, 20274,180 ft10 h
Westminster Trail Races50 KMWestminster, COAug 14, 20272,358 ft9 h
Rock Hawk50 KMCastle Rock, COAug 28, 20273,325 ft9 h
Creede Mountain Run50 KMCreede, COSep 4, 20275,600 ft10 h
Front Range Ultra Dayze50 KMLoveland, COSep 4, 2027——