Bad Bass - Castro Valley

The Bad Bass event in Castro Valley, California, features a scenic running experience at Lake Chabot Marina, offering participants the choice of a 5K, 10K, or Half Marathon. Scheduled for July 19, 2025, this unique event is themed around a whimsical Scottish bass character, adding a fun twist to the race atmosphere. Registration fees vary based on the distance and timing, with options for remote runners as well.

The event also supports the East Bay Regional Parks Campership Program, encouraging community involvement and donations. Join in for a memorable day of running and camaraderie amidst beautiful trails. Visit the organization's website for the most recent information.