Dirty December Trail Run
Race Date
Dec 20, 2026
Location
San Diego, CA
Quick facts
- Date
- Sunday, December 20, 2026
- Location
- San Diego, California
- Distance
- Half marathon (13.1 mi) + 6H, 26.2M, 10K trail run
- Course
- Loop Course
- Terrain
- Trail
- USATF certified
- Not listed
Course Info
Course Type
Loop Course
Terrain
trail
Surface
Dirt Trail
Difficulty
Rolling Hills
Net Drop/km
0 m (Flat)
Separation
0.0%
Also Offers
Quality Score
1 year running
~20 finishers a year
small race — neutral
0% returning runners
4 timing sources · 6 photos
runners from 3 states
winner 1:47:46
typical high 65°F
Race Day Weather
5-year historical avgStart (Low)
48°
Afternoon (High)
65°
Pleasant conditions — light layers at start, comfortable by finish
0.1"
Precipitation
8 mph
Wind
74%
Humidity
Race Photos
Frequently asked
When is the Dirty December Trail Run?
The Dirty December Trail Run is held on Sunday, December 20, 2026.
Where does the Dirty December Trail Run take place?
It takes place in San Diego, California.
What distances does the Dirty December Trail Run offer?
The half marathon (13.1 miles), plus 6H, 26.2M, 10K trail run.
Is the Dirty December Trail Run course flat and good for a PR?
The Dirty December Trail Run is a rolling hills, loop course course.
HalfRuns editorial — independent, no paid placement.
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