California · Marathon · 1/2 Marathon · 10K
Dirty December Trail Run
Dirty December Trail Run is a marathon, 1/2 Marathon, 10K and Hill Climb 6HR event held in San Diego, California. Its next confirmed date is Sunday, December 20, 2026.
- Race day
- December 20, 2026
- Location
- San Diego, CA
Race details
- Date
- Sunday, December 20, 2026
- Location
- San Diego, California
- Distances
- Marathon, 1/2 Marathon, 10K, Hill Climb 6HR
- Course
- 3500 ft gain
- Registration
- ultrasignup.com
- Official website
- dirtyfeet.us
Registration, course & weather
- Registration status
- Open
- Start time
- 8:30 AM PST
- Course profile — Marathon
- Loop course; Trail surface; 3500 ft gain (estimated from third-party elevation data)
- Course profile — Half Marathon
- Loop course; Trail surface; 2300 ft gain (estimated from third-party elevation data)
- Course profile — 10K
- Loop course; Trail surface; 1000 ft gain (estimated from third-party elevation data)
- Course profile — Hill Climb 6HR
- Loop course; Trail surface
About the Dirty December Trail Run
Dirty December Trail Run in San Diego, CA.
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Guides from the RaceRove blog
- 8 min read How to Choose Your First Marathon A practical checklist for choosing a first marathon based on course, weather, cutoff, travel, field size and support.
- 7 min read How to Find a 5K, 10K, Half Marathon or Marathon Near You A practical way to find running races near you: pick a distance, decide how far you'll travel, read the listing properly and confirm the details before you register.
- 9 min read How to Run a Race in All 50 States How to plan a 50-state running challenge: set your own rules, group states into trips, build a calendar around the seasons, budget for it and keep track of every finish.
- Blog All guides Planning advice for finding, choosing and travelling to races.
Dirty December Trail Run: common questions
- When is the Dirty December Trail Run?
- The next confirmed date is Sunday, December 20, 2026.
- Where is the Dirty December Trail Run held?
- In San Diego, California.
- What distances does the Dirty December Trail Run offer?
- Marathon, 1/2 Marathon, 10K and Hill Climb 6HR.
- How do I register for the Dirty December Trail Run?
- Registration is handled by the organiser at ultrasignup.com. Entry fees, caps and deadlines are set there.
- Is registration open for the Dirty December Trail Run?
- Yes — registration is open. Listed fee for the longest distance, $115 (from crewable.run, checked October 16, 2026).
- What time does the Dirty December Trail Run start?
- 8:30 AM PST.
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.