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Events
USARunningRoad13.2mi · 21.2 km / 13.2 mi3.35mi · 5.4 km / 3.4 mi6.4mi · 10.3 km / 6.4 mi

Bad Bass

Castro Valley, California · USA

When is the next Bad Bass?

3 distances · see start times below

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Time limits and cut-offs

Some events have a finishing deadline or intermediate checkpoint cut-offs. These can vary by distance, start wave and edition.

6.4mi · 2027-07-24
Not yet verified for this edition. Check the official race instructions.

No official finish time limit has been verified by AthRecs for this edition. This does not mean there is no cut-off.

Check organiser information
3.35mi · 2027-07-24
Not yet verified for this edition. Check the official race instructions.

No official finish time limit has been verified by AthRecs for this edition. This does not mean there is no cut-off.

Check organiser information
13.2mi · 2027-07-24
Not yet verified for this edition. Check the official race instructions.

No official finish time limit has been verified by AthRecs for this edition. This does not mean there is no cut-off.

Check organiser information

About Bad Bass

Bad Bass is a running event in Castro Valley, California, United States. Recorded disciplines include 13.2mi, 3.35mi, 6.4mi. The listed surface is road. The next listed date is Saturday, 24 July 2027. Check the organiser's information for entry and race-day arrangements.

Dates, starts & entry

Times are local to the race. Select the entry route for your distance.

  • 6.4mi · 10.3 km / 6.4 mi

    Sat, 24 Jul 2027

    Starts 08:55 GMT-7

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    Bad Bass · 6.4mi · 10.3 km / 6.4 mi

    2027-07-24 · 08:55 (America/Los_Angeles)

    Venue / race area: Castro Valley, California, United States

    Race website

    Start reminder only; finish time is not confirmed. Adjust the calendar duration if needed.

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    Bad Bass · 6.4mi · 10.3 km / 6.4 mi

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    Date, 08:55 start and event "10K" (6.4mi) confirmed on the organiser's RunSignup entry page for the 2027 edition (checked 2026-11-09). Local time America/Los_Angeles.

    Edition source

  • 3.35mi · 5.4 km / 3.3 mi

    Sat, 24 Jul 2027

    Starts 09:10 GMT-7

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    Bad Bass · 3.35mi · 5.4 km / 3.3 mi

    2027-07-24 · 09:10 (America/Los_Angeles)

    Venue / race area: Castro Valley, California, United States

    Race website

    Start reminder only; finish time is not confirmed. Adjust the calendar duration if needed.

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    Google and Outlook open a prepared event for you to save. Apple uses your private AthRecs race subscription. Download a one-off file only if you prefer to import it yourself.

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    Bad Bass · 3.35mi · 5.4 km / 3.3 mi

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    Date, 09:10 start and event "5K" (3.35mi) confirmed on the organiser's RunSignup entry page for the 2027 edition (checked 2026-11-09). Local time America/Los_Angeles.

    Edition source

  • 13.2mi · 21.2 km / 13.2 mi

    Sat, 24 Jul 2027

    Starts 08:30 GMT-7

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    Entry details
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    Bad Bass · 13.2mi · 21.2 km / 13.2 mi

    2027-07-24 · 08:30 (America/Los_Angeles)

    Venue / race area: Castro Valley, California, United States

    Race website

    Start reminder only; finish time is not confirmed. Adjust the calendar duration if needed.

    Google CalendarOutlook.comMicrosoft 365Apple Calendar

    Google and Outlook open a prepared event for you to save. Apple uses your private AthRecs race subscription. Download a one-off file only if you prefer to import it yourself.

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    Share this race

    Bad Bass · 13.2mi · 21.2 km / 13.2 mi

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    Date, 08:30 start and event "HALF MARATHON" (13.2mi) confirmed on the organiser's RunSignup entry page for the 2027 edition (checked 2026-11-09). Local time America/Los_Angeles.

    Edition source

Location & race day

Listed venue / area

Castro Valley, CaliforniaUSA

Find this location on a map

Confirm the exact start line, parking and arrival instructions with the organiser. A listed town or postcode may cover a wider area.

About the race

Bad Bass takes place in Castro Valley, California. Its 2027 entry page on RunSignup lists: HALF MARATHON, 10K, 5K, Half Marathon Hiker.

Surface:
Road
Race website

Ways to enter

Compare the listed booking routes. Verified links show when they were checked.

Sat, 24 Jul 2027

Third-party prices, booking fees, allocations and refund terms can differ. Confirm the final details with the provider before paying.

Race questions

When is the next event?

The next listed date for Bad Bass is 24 July 2027.

Where is it held?

Bad Bass is listed in Castro Valley, California, United States. Check the event's race-day instructions for the exact start location.

Which distances are listed?

The programme listed for 24 July 2027 includes 6.4mi, 3.35mi, 13.2mi.

What time does it start?

Listed starts for 24 July 2027: 6.4mi: 08:55 GMT-7; 3.35mi: 09:10 GMT-7; 13.2mi: 08:30 GMT-7. Times are local to the race venue. Follow the start or wave assigned to your entry.

How do I enter?

Use the listed entry options for your distance. Check the entry page for current availability, eligibility and deadlines.

Entry details

Results

Results have yet to be added for this race.

Past races

None listed yet.

More running nearby

Fri

1

Jan

2027

Brazen New Year’s Day

Castro Valley, CaliforniaUSA

Lake Chabot

Running10K · 10 km / 6.2 mi5K · 5 km / 3.1 miHalf · 21.1 km / 13.1 mi· Trail

Brazen New Year’s Day. Start times are local to the race venue.

08:55 PST · 10K

Status TBC

Details & entryRace website

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