All races in Colorado
Upcoming ultra marathons in Colorado
52 ultra marathons are coming up in Colorado, out of 387 races on the statewide calendar. Compare dates, distances and locations, then get ready with a personalized training plan.
52 upcoming races
April 2027
- Apr 9, 2027 Desert R.A.T.S. Trail Running Festival📍 Fruita, CO62.1 mi · 29.8 mi · 13.1 mi · 5.6 mi
- Apr 10, 2027 Trail Running Festival Desert Rats by UTMB®📍 Fruita, CO62.1 mi · 31.1 mi · 13 mi · 6.2 mi
- Apr 17, 2027 Rattler Trail Race📍 Colorado Springs, CO31.1 mi · 15.5 mi · 6.2 mi · 3.1 mi
May 2027
- May 1, 2027 Greenland Trail Races📍 Palmer Lake, CO4 mi · 8 mi · 15.5 mi · 31.1 mi
- May 8, 2027 estimated dateQuad Rock 50📍 Bellvue, CO25 mi · 50 mi
- May 8, 2027 estimated dateQuad Rock📍 Fort Collins, CO50 mi · 25 mi
- May 29, 2027 North Fork 50K Trail Race📍 Pine Grove, CO31.1 mi · 50 mi
June 2027
- Jun 3, 2027 Vail Ultra Benefiting For The Fallen📍 Vail, CO50 mi
- Jun 5, 2027 estimated dateSummits Trail Runs📍 Granby, CO6 mi · 21.3 mi · 27.4 mi · 43 mi
- Jun 15, 2027 Frisco Mountain Goat Kids Trail Running Series📍 Frisco, CO3.1 mi · 804.67 m · 1.5 mi · 1.6 mi
July 2027
- Jul 9, 2027 Chase the Moon📍 Highlands Ranch, CO31.1 mi · 3 h · 6 h · 12 h
- Jul 9, 2027 estimated dateHardrock 100 Endurance Run📍 Silverton, CO100 mi
- Jul 9, 2027 Hardrock Hundred Mile Endurance Run📍 Silverton, CO100 mi
- Jul 9, 2027 estimated dateSilverheels 100📍 Como, CO100 mi · 63.4 mi · 50 mi · 37.9 mi
- Jul 10, 2027 estimated dateLeadville Silver Rush 50📍 Leadville, CO15 mi · 50 mi
- Jul 10, 2027 Leadville Silver Rush Trail Run📍 Leadville, CO50 mi · 14.9 mi
- Jul 10, 2027 estimated dateSilver Rush 50 Run📍 Leadville, CO48.4 mi
- Jul 13, 2027 Frisco Mountain Goat Kids Trail Running Series #3📍 Frisco, CO1.6 mi · 3.1 mi · 800 m
- Jul 16, 2027 Ouray 100 Mile Endurance Run📍 Ouray, CO100 mi · 50 mi
- Jul 16, 2027 High Lonesome 100 Mile📍 Mount Lincoln, CO100 mi
- Jul 17, 2027 Powderhorn Mountain Ultra, Vertical Challenge and relay📍 Mesa, CO360 m · 720 m · 6.2 mi
- Jul 17, 2027 estimated dateSilverton Alpine 📍 Silverton, CO31.7 mi · 26.7 mi · 8 mi
- Jul 23, 2027 Never Summer Dirty Double📍 Gould, CO37.3 mi · 62.1 mi
- Jul 23, 2027 estimated dateNever Summer 100k & 60k📍 Gould, CO62.1 mi · 37.3 mi
- Jul 24, 2027 estimated dateGrand Mesa Ultras📍 Grand Mesa, CO18.6 mi · 34.2 mi · 50 mi
- Jul 26, 2027 The Summit 200📍 Frisco, CO200 mi
- Jul 30, 2027 Never Summer 100km & 60km📍 Walden, CO37.3 mi · 62.1 mi
- Jul 31, 2027 estimated dateSheep Mountain📍 Fairplay, CO50 mi · 31.6 mi
August 2027
- Aug 1, 2027 Emerald Mountain Epic📍 Steamboat Springs, CO13.1 mi · 26.2 mi
- Aug 2, 2027 estimated dateSilverton Ultra Dirty📍 Silverton, CO100 mi · 59.5 mi · 36.6 mi
- Aug 6, 2027 High Five 100📍 Lake City, CO100 mi
- Aug 7, 2027 estimated dateSHEEP MOUNTAIN TRAIL RUNS📍 Fairplay, CO50 mi · 31.1 mi · 13.1 mi
- Aug 13, 2027 San Juan Softie 100📍 Durango, CO100 mi
- Aug 21, 2027 estimated dateCKF Leadville Trail 100 Run📍 Aspen, CO100 mi
- Aug 21, 2027 estimated dateLeadville Trail 100 Mile Run📍 Leadville, CO100 mi
- Aug 21, 2027 Leadville Trail 100 Run📍 Leadville, CO100 mi
- Aug 28, 2027 estimated dateContinental Divide Trail Run📍 Steamboat Springs, CO5 mi · 16 mi · 31.1 mi
September 2027
- Sep 4, 2027 estimated dateGrand Traverse Trail Run📍 Crested Butte, CO40 mi
- Sep 11, 2027 estimated dateDevil on the Divide📍 Empire, CO13.7 mi · 31.1 mi
- Sep 11, 2027 estimated dateSnow Mountain Ranch Trail Run📍 Granby, CO3.1 mi · 6.2 mi · 13.1 mi · 20.5 mi
- Sep 17, 2027 Run Rabbit Run 100📍 Steamboat Springs, CO50 mi · 100 mi
- Sep 24, 2027 estimated dateRed Feather Trail Jamboree📍 Red Feather Lakes, CO13.1 mi · 50 mi
- Sep 25, 2027 estimated dateCrested Butte Ultra📍 Crested Butte, CO21.7 mi · 34.2 mi · 50 mi
- Sep 25, 2027 estimated dateSangre de Cristo Trail Festival📍 Westcliffe, CO8 mi · 16.8 mi · 31.1 mi · 50 mi
- Sep 25, 2027 estimated dateWest Line Winder - 50K & 30K📍 Buena Vista, CO18.6 mi · 31.1 mi
- Sep 25, 2027 estimated dateWILD Wahatoya Runs📍 La Veta, CO8 mi · 13.1 mi · 31.1 mi
- Sep 25, 2027 estimated dateSangre de Cristo Ultras📍 Westcliffe, CO100 mi · 61 mi · 50 mi · 30.8 mi
October 2027
- Oct 2, 2027 estimated dateSage Burner Trail Races📍 Gunnison, CO9.3 mi · 17.4 mi · 31.1 mi
- Oct 2, 2027 estimated dateThe Bear Chase Race📍 Lakewood, CO3.1 mi · 6.2 mi · 13.1 mi · 31.1 mi
- Oct 2, 2027 estimated dateAbove the Clouds Ultra📍 Woodland Park, CO6.2 mi · 31.1 mi
- Oct 16, 2027 estimated dateIndian Creek Trail Runs📍 Sedaila, CO5.5 mi · 15 mi · 35 mi · 54 mi
- Oct 23, 2027 estimated dateBridge Burner Ultra📍 Cañon City, CO6.2 mi · 21.7 mi · 31.1 mi · 35 mi
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