September Half Marathon Trail Runs within 300 miles of Modesto, CA
Thousand Oaks, CA
Boney Mountain Trail Runs
Sep 21, 2024
Big Sur, CA
Big Sur Trail Marathon
Sep 28, 2024
Berkeley, CA
Berkeley Trail Adventure
Sep 14, 2024
San Jose, CA
South Hills Single Track Trail Run
Sep 14, 2024
Pacifica, CA
Pacifica Summit Run
Sep 27, 2025
Woodside, CA
Crystal Springs
Sep 1, 2024
Gilroy, CA
Mt. Madonna Challenge
Sep 7, 2024
San Ramon, CA
Rocky Ridge Trail Half Marathon
Sep 21, 2024
Auburn, CA
Sunset & Cider Trail Races
Sep 27, 2025
Clayton, CA
Diablo Trail Run
Sep 8, 2024
Willits, CA
Celebration of Life - Trail Trek
Sep 29, 2024
Mendocino, CA
Mendocino Running Festival
Sep 7, 2024
Arnold, CA
Arnold Rim Trail Endurance Runs
Sep 28, 2024
Loma Mar, CA
Groves Trail Run
Sep 7, 2024
Sat | Sun | Mon | Tue | Wed | Thu | Fri | Multiple |
1. Crystal Springs
-
Past DateSep 1, 2024Sunday
-
50K, 26.2M, 35K, 13.1M, 8K trail run | kids run
More Information
-
Woodside, CA
69 miles point to pointSan Mateo County, CA
2. Groves Trail Run
-
Past DateSep 7, 2024Saturday
-
50K, 30K, 13.1M trail run
More Information
-
Loma Mar, CA
75 miles point to pointSan Mateo County, CA
3. Mendocino Running Festival
-
Past DateSep 7, 2024Saturday
-
12H, 6H, 13.1M, 10K trail run | 6H relay
More Information
-
Mendocino, CA
188 miles point to pointMendocino County, CA
4. Mt. Madonna Challenge
-
Past DateSep 7, 2024Saturday
-
13.1M, 10K, 5K run | 13.1M, 10K, 5K trail run
More Information
-
Gilroy, CA
54 miles point to pointSanta Clara County, CA
5. Diablo Trail Run
-
Past DateSep 8, 2024Sunday
-
50K, 26.2M, 13.1M, 10M, 4M trail run | kids run
More Information
-
Clayton, CA
54 miles point to pointContra Costa County, CA
6. Berkeley Trail Adventure
-
Past DateSep 14, 2024Saturday
-
50K, 35K, 13.1M, 10K trail run
More Information
-
Berkeley, CA
70 miles point to pointAlameda County, CA
7. South Hills Single Track Trail Run
-
Past DateSep 14, 2024Saturday
-
50K, 26.2M, 16M, 13.1M, 9M, 10K, 5K trail run
More Information
-
San Jose, CA
54 miles point to pointSanta Clara County, CA
8. Boney Mountain Trail Runs
-
Past DateSep 21, 2024Saturday
-
13.1M, 6K trail run
More Information
-
Thousand Oaks, CA
266 miles point to pointVentura County, CA
9. Rocky Ridge Trail Half Marathon
-
Past DateSep 21, 2024Saturday
-
13.1M, 10K, 5K trail run
More Information
-
San Ramon, CA
53 miles point to pointContra Costa County, CA
10. Pacifica Summit Run
-
Sep 27, 2025Saturday
-
30K, 13.1M, 10K trail run
More Information
-
Pacifica, CA
79 miles point to pointSan Mateo County, CA
11. Sunset & Cider Trail Races
-
Sep 27, 2025Saturday
-
50K, 13.1M, 5M trail run
More Information
-
Auburn, CA
86 miles point to pointPlacer County, CA
12. Arnold Rim Trail Endurance Runs
-
Past DateSep 28, 2024Saturday
-
37M, 22M, 13.1M, 10K trail run
More Information
-
Arnold, CA
54 miles point to pointCalaveras County, CA
13. Big Sur Trail Marathon
-
Past DateSep 28, 2024Saturday
-
26.2M, 13.1M, 5M trail run
More Information
-
Big Sur, CA
104 miles point to pointMonterey County, CA
14. Celebration of Life - Trail Trek
-
Past DateSep 29, 2024Sunday
-
13.1M, 5K trail run
More Information
-
Willits, CA
175 miles point to pointMendocino 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.