Rocky Ridge Trail Half Marathon

San Ramon, United States • 20 Sep 2025

The Rocky Ridge Trail Half Marathon is a challenging trail race held in the scenic Las Trampas Wilderness near San Ramon, California. Scheduled for September 20, 2025, the event features a half marathon, 10K, and 5K distances. Known for its tough terrain and significant elevation changes, the half marathon is not suited for beginners but offers runners stunning vistas and a rewarding wilderness experience. The 10K and 5K courses also include hills and beautiful views, providing a demanding yet scenic challenge. This race is part of the Brazen Ultra Half Series and promises a memorable outdoor adventure for trail running enthusiasts. Visit the organization's website for the most recent information.

Race information

13 mi
Half Marathon
10 km
10k
5 km
Visit the organization's website for the most recent information.
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