RunRace USA › California › Castro Valley › Bad Bass
Bad Bass
Castro Valley, California · Saturday, July 24, 2027 · Half Marathon, 6.4 Miles, 3.4 Miles
Official race page & registration ↗Saves stay on this device. Calendar entries use the listed date; confirm your distance and start time with the organizer.
Bad Bass takes place on Saturday, July 24, 2027 in Castro Valley, California. The race offers 3 distances: Half Marathon, 6.4 Miles, 3.4 Miles.
It is one of 38 races on the California calendar that July.
- Date
- Saturday, July 24, 2027
- Location
- Castro Valley, California
- Distances
- Half Marathon, 6.4 Miles, 3.4 Miles
- Entry fee
- from $55 across event options; may include kids or shorter events. Check distance-specific prices and fees.
Listing from the 2027 race calendar, refreshed nightly. Details can change: confirm date and entry on the official race page before travelling. Spot an error? Correct this listing.
Making a race weekend of it?
Stay near the start line in Castro Valley: check in Jul 23, out Jul 25.
Common questions
When is Bad Bass?
Bad Bass is scheduled for Saturday, July 24, 2027.
Where is Bad Bass held?
Bad Bass is held in Castro Valley, California.
What distances does Bad Bass offer?
The listed distances are Half Marathon, 6.4 Miles, 3.4 Miles.
How much does Bad Bass cost?
Listed event options start from $55. This minimum may be for a kids or shorter event. Check the official race page for your distance's current price and any additional fees.
How do I register for Bad Bass?
Registration is handled on the official race page, linked at the top of this listing. Entry can close early if the race sells out.
More races nearby
Within about 60 miles, ordered by approximate straight-line distance between listed locations.
- Jun 62027 Lake Chabot Trail Challenge (Half Marathon & 5K)Castro Valley, CA
- Apr 17SPASM Lake Chabot Trail RunCastro Valley, CA
- Jan 1Brazen New Year's DayCastro Valley, CA
- Jan 1Brazen New Year's EveCastro Valley, CA
- Dec 31Brazen New Year's Eve 2026Castro Valley, CA
See every race on the California calendar, all Castro Valley races, California Half Marathons, California 5Ks, or use the Race Finder for maps and filters.