August Ultras within 400 miles of Castle Rock, CO on Saturdays
City Location
1. Sheep Mountain Trail Runs
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Aug 2, 2025Saturday
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50M, 50K, 13.1M trail run
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Fairplay, CO
61 miles point to pointPark County, CO
2. UTE 100
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Aug 2, 2025Saturday
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100M, 50M trail run
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La Sal, UT
244 miles point to pointSan Juan County, UT
3. Philmont Trail Race
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Past DateAug 3, 2024Saturday
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50M, 26M, 30K, 8M trail run
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Cimarron, NM
198 miles point to pointColfax County, NM
4. Kat'cina Mosa 100K Mountain Run
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Aug 9, 2025Saturday
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100K trail run
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Springville, UT
362 miles point to pointUtah County, UT
5. Mountain Madness
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Past DateAug 10, 2024Saturday
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50M run | 50M relay
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Vernal, UT
258 miles point to pointUintah County, UT
6. Skyline Mountain Marathon
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Past DateAug 10, 2024Saturday
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55K, 26.2M, 30K, 13.1M trail run
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Eden, UT
392 miles point to pointWeber County, UT
7. Leadville Trail 100 Mile Run
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Aug 16, 2025Saturday
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100M trail run
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Leadville, CO
76 miles point to pointLake County, CO
8. Lean Horse
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Aug 16, 2025Saturday
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50M, 30M, 20M trail run | 30M relay
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Custer, SD
311 miles point to pointCuster County, SD
9. Triple Trail Challenge
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Past DateAug 17, 2024SaturdayMid Mountain 50K
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50K trail run
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Park City, UT
363 miles point to pointSummit County, UT
10. Continental Divide Trail Run
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Past DateAug 24, 2024Saturday
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50K, 16M trail run
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Steamboat Springs, CO
129 miles point to pointRoutt County, CO
11. Elephant Rock Trail Run
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Past DateAug 24, 2024Saturday
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50K, 26.8M, 13.8M, 7M trail run
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Bountiful, UT
387 miles point to pointDavis County, UT
12. Creede Mountain Run
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Aug 30, 2025Saturday
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50K, 22M, 12M, 2M trail run
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Creede, CO
152 miles point to pointMineral County, CO
13. Grand Traverse Mountain Run
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Aug 30, 2025Saturday
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40M trail run
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Crested Butte, CO
114 miles point to pointGunnison County, CO
For the love of all that Is good And moisture wicking...
Though we Try To be accurate And On top Of things... Race details can change When we aren't lookin. And once in a while we simply make a mistake.
ALWAYS visit the race's website for the most complete and accurate race information.
ALWAYS visit the race's website for the most complete and accurate race information.