Trail Running calendar near Healdsburg 2026-2027

The Hunter S. Thompson Fear & Loathing will take place in San Francisco on Sunday 6 December 2026. You can run between 50 and 50 miles.

Celebrate the final day of the year with a trail run at Lake Chabot in Castro Valley. Choose between half marathon, 10K, and 5K distances with options for runners and hikers alike.

Start the new year with a run at Lake Chabot in Castro Valley. Choose from a half marathon, 10K, or 5K on January 1st. This event is part of the Brazen Ultra Half Series, offering a trail challenge.

Experience the coastal beauty of the Marin Headlands with races ranging from a 50 yard kids dash to a 50K ultramarathon. Enjoy views of the Golden Gate Bridge and San Francisco on this scenic trail run.

Experience a flat and fast bayside run at the San Leandro Marina Park with scenic views of the San Francisco Bay. Choose between Half Marathon, 10K, and 5K distances on a course perfect for setting personal records.