Bad Bass
About this race
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 July 18th 2026! 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!
Join fellow runners on July 16, 2022 for the Bad Bass. It's a fantastic Half-Marathon, 10.3K, 5.4K featuring a flat and fast course in Castro Valley.
Pick your distance
Running
HALF MARATHON
10K
5K
Hiker Division
Weather Overview
These values reflect historical conditions on the race dates in Castro Valley in 2022, from Open-Meteo archive data.
About Castro Valley
Bad Bass takes place in Castro Valley, California, United States. The local timezone is America/Los_Angeles.
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🏃 Plan Your Next Race in Castro Valley
Find upcoming events by distance:
- Castro Valley 5K Races Best Castro Valley routes for beginners and speed work.
- 10K Run Events in Castro Valley The most popular local distance in California.
- Castro Valley Half Marathons Top-rated 21.1K courses in the Castro Valley area.
- Marathons in Castro Valley Scenic 42.2K routes and Castro Valley Boston qualifiers.
- Castro Valley Running Calendar 2026 See all upcoming race dates.
Race information has been sourced from the event's official website and other publicly available resources. For the most up-to-date details, please refer to the official website directly. If you notice any incorrect or missing information, don't hesitate to reach out to us by email.