Bad Bass - Castro Valley

The Bad Bass event, taking place on July 19, 2025, at Lake Chabot Marina in Castro Valley, California, features a scenic 5K, 10K, and Half Marathon. Participants can enjoy a mix of paved and trail courses, showcasing the beautiful landscapes of the area. The event is themed around a whimsical Scottish bass character, adding a fun twist to the race atmosphere.

Registration is available at varying prices depending on the distance chosen, and the event promises a lively and engaging experience for runners of all levels. Join the celebration and aim for a personal record at this unique running event!. Visit the organization's website for the most recent information.