Rising up from the depths of Lake Chabot, the Bad Bass (a strangely kilt-wearing, bagpipe-playing Scottish bass with teeth) shows itself once again on September 11th, 2021! Why is he Scottish? What is he doing in Castro Valley? How can he play bagpipes with his fin? We have no idea how to answer those questions. Why is he so bad-to-the-fishbone? Maybe he just knows how awesome the trails of Lake Chabot really are!
Whatever the Bad Bass is doing here, we hope you'll join us at the beautiful Lake Chabot Marina in Castro Valley for the scenic Bad Bass 5K, 10K or Half Marathon!
Registration fees
Prices are inclusive of mandatory charges, items, and fees
5K Closed
Online registration closed-
- Online registration closed
10K Closed
Online registration closed-
- Online registration closed
Half Marathon Closed
Online registration closed-
- Online registration closed
Remote Runner Closed
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- Online registration closed
Event schedule
- Sat, September 11, 2021 7:30 AM - Hiker start (for those walking the half marathon, planning to take longer than 3.5-4 hours)
- Sat, September 11, 2021 8:30 AM - Half Marathon
- Sat, September 11, 2021 8:55 AM - 10K
- Sat, September 11, 2021 9:10 AM - 5K
Contact information
- Event contact
- Race Director
- Website
- Visit website
