Bad Bass - Castro Valley
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Bad Bass - Castro Valley
Bad Bass takes place on July 24, 2027, at Lake Chabot Marina (17600 Lake Chabot Road, Castro Valley, CA 94546, USA). The event includes several running and virtual race options held on the same date.
Available distances:
- Half Marathon (13.2 Miles)
- 10K (6.4 Miles)
- 5K (3.35 Miles)
- Virtual (13.1 Miles)
- Half Marathon Hiker (13.2 Miles)
Registration opened on October 17, 2026. Registration close dates differ by event: the 5K, 10K and Half Marathon registrations close May 18, 2027; the Virtual option closes July 4, 2027; the Half Marathon Hiker registration closes on July 24, 2027. Published registration fees are $90.00 for the Half Marathon, $72.00 for the 10K, $63.00 for the 5K, $55.00 for the Virtual option, and $100.00 for the Half Marathon Hiker.
The event text describes a themed character called the "Bad Bass," portrayed as a kilt-wearing, bagpipe-playing Scottish bass. The description links that character to the Lake Chabot trails and the listed race options without providing additional logistical details. Visit the organization's website for the most recent information.
