Dirty December Trail Run

DEC
20
2026
Experience a festive trail run in San Diego featuring various distances and a unique six hour hill climb challenge with costume awards for solo and team participants.
Sun 20 Dec 2026
Marathon Half Marathon 10 kilometers

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Trail Running in San Diego

The Dirty December Trail Run is an outdoor sports event held in San Diego, California. Organized by Dirty Feet Productions, this event takes place in December and features a variety of distances on trail terrain. Participants have the option to wear costumes during their run, with specific award categories available for both solo and team costumes.

The event offers several distinct race distances and formats to accommodate different preferences:

  • Marathon
  • 1/2 Marathon
  • 10K
  • 6-Hour Hill Climb

A notable feature of the event is the 6-Hour Hill Climb. This specific race format tasks participants with completing as many laps as possible within a six-hour time limit on a 2.5-mile segment. The course for this challenge involves running down and then back up a section known as Cardiac Hill. Rankings for the hill climb are determined by the total distance completed in increments of 2.5 miles. Special awards are designated for the top male and female performers in this category, titled King and Queen of the Hill.

The event is characterized as a low-key holiday trail run. Registration for all distances typically remains open until the Friday evening preceding the event date. Visit the organization's website for the most recent information.

Marathon
Marathon
Half Marathon
1/2 Marathon
10 km
10k
Hill Climb 6hr

Events nearby

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Trail races on dirt at Black Mountain Ranch Park in San Diego on November 28, 2026, offering Half, 10K and 5K courses with significant elevation and a 300 runner limit.
A volunteer organized fun run and walk on Del Mar beach offering 3K and 5K routes while supporting veterans and regional land conservation.
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