California · 12 Hours · 6 Hours · 3 Hours
Dirty Dozen
Dirty Dozen is a 12 Hours, 6 Hours and 3 Hours event held in san pablo, California. It was last held on July 25, 2026 and is usually run in July; the next date hasn't been announced yet.
- Usually held
- July
- Location
- san pablo, CA
Race details
- Last held
- July 25, 2026
- Usually held in
- July
- Location
- san pablo, California
- Distances
- 12 Hours, 6 Hours, 3 Hours
- Course
- 150 ft gain
- Registration
- runsignup.com
- Official website
- brazenracing.com
Registration, course & weather
- Registration status
- Registration status as last checked October 19, 2026: completed
- Start time
- 7:00 AM PDT
- Course profile
- Loop course; Road surface; 150 ft gain (estimated from third-party elevation data)
About the Dirty Dozen
The course is a 3.37 mile loop with approximately 98% dirt fire trails. Total elevation gain on the loop is about 150 feet. An additional .42 mile loop will be available to run for the last hour of each timed event -- starting at hour 2 for the 3-hour runners, hour 5 for the 6-hour runners and hour 11 for the 12-hour runners. Runners will enjoy panoramic vistas of the bay offering views of seven counties and about that many bridges.
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Guides from the RaceRove blog
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- Blog All guides Planning advice for finding, choosing and travelling to races.
Dirty Dozen: common questions
- When is the Dirty Dozen?
- The next date hasn't been announced in the listing yet. The race is usually held in July. Check the organiser's website for the official date.
- Where is the Dirty Dozen held?
- In san pablo, California.
- What distances does the Dirty Dozen offer?
- 12 Hours, 6 Hours and 3 Hours.
- How do I register for the Dirty Dozen?
- Registration is handled by the organiser at runsignup.com. Entry fees, caps and deadlines are set there.
- Is registration open for the Dirty Dozen?
- Registration status as last checked October 19, 2026: completed.
- What time does the Dirty Dozen start?
- 7:00 AM PDT.
- What is the course like at the Dirty Dozen?
- Loop course; Road surface; 150 ft gain (estimated from third-party elevation data).
Plan this race in RaceRove
Save it to your plan, compare it with other races, check typical race-day weather and track your 50-state progress in the interactive app.