May Ultra Trail Runs in the West
City Location
1. Hacienda Hills Run
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May 3, 2025Saturday
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50K, 26.2M, 13.1M, 9M, 10K, 5K trail run
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San Jose, CA
Santa Clara County, CA
2. Collegiate Peaks Trail Run
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Past DateMay 4, 2024Saturday
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50M, 25M trail run
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Buena Vista, CO
Chaffee County, CO
3. Folsom Lake Trail Run
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Past DateMay 4, 2024Saturday
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50K, 30K, 13.1M, 10K trail run
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Folsom, CA
Sacramento County, CA
4. Greenland Trail Races
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Past DateMay 4, 2024Saturday
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50K, 25K, 8M, 4M trail run
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Larkspur, CO
Douglas County, CO
5. Hollywood to the Sea Road & Trail Relay
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Past DateMay 4, 2024Saturday
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75M trail run | 75M relay
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Los Angeles, CA
Los Angeles County, CA
6. Lost Creek Trail Run
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Past DateMay 4, 2024Saturday
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50K, 30K, 5K trail run | 30K relay
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Trail, OR
Jackson County, OR
7. McDonald Forest 50K Trail Run
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Past DateMay 4, 2024Saturday
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50K trail run
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Corvallis, OR
Benton County, OR
8. Miwok 100K
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Past DateMay 4, 2024Saturday
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100K trail run
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Stinson Beach, CA
Marin County, CA
9. Pacific Crest Trail 50 (PCT 50)
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May 10, 2025Saturday
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50M trail run
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San Diego, CA
San Diego County, CA
10. Grizzly Peak Trail Run
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Past DateMay 11, 2024Saturday
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50K, 26.2M, 30K, 13.1M, 10K trail run | kids run
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Berkeley, CA
Alameda County, CA
11. Paiute Meadows Trail Run
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Past DateMay 11, 2024Saturday
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50K, 13.6M, 4.5M trail run | 50K relay
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Susanville, CA
Lassen County, CA
12. Quad Rock 50
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Past DateMay 11, 2024Saturday
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50M, 25M trail run
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Fort Collins, CO
Larimer County, CO
13. Quicksilver Endurance Runs
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Past DateMay 11, 2024Saturday
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100K, 50K trail run
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San Jose, CA
Santa Clara County, CA
14. Secret Beach 100K/50M
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Past DateMay 11, 2024Saturday
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100K, 50K trail run
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Gold Beach, OR
Curry County, OR
15. The Race to Space
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Past DateMay 11, 2024Saturday
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8H, 6H, 3H, 1H trail run | 6M relay
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McMinnville, OR
Yamhill County, OR
16. Tillamook Burn Trail Run
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Past DateMay 11, 2024Saturday
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50M trail run
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Timber, OR
Washington County, OR
17. Trail Run at Sly Park
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Past DateMay 11, 2024Saturday
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50K, 26.2M, 18M, 13.1M, 8.5M, 10K, 5K trail run
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Pollock Pines, CA
El Dorado County, CA
18. Valkyrie Trail Race
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Past DateMay 11, 2024Saturday
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50K, 26.2M, 30K, 13.1M, 8M, 4M trail run
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Colorado Springs, CO
El Paso County, CO
19. Tillamook Burn Trail Run
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Past DateMay 12, 2024Sunday
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50K trail run
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Timber, OR
Washington County, OR
20. Born To Run Ultra Marathons
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Past DateMay 15, 2024Wednesday
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96H trail run
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Los Olivos, CA
Santa Barbara County, CA
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.