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Dirty December Trail Run

San Diego, United States • 21 Dec 2025

The Dirty December Trail Run in San Diego, CA, is a festive holiday trail running event featuring multiple race distances including a marathon, half marathon, 10K, and a unique 6-hour hill climb race. Participants can run in costume for a chance to win awards in solo or team categories, adding a fun and spirited atmosphere. The 6-hour race challenges runners to repeatedly ascend and descend the 2.5-mile Cardiac Hill, with special King and Queen of the Hill awards for top performers. This low-key event combines scenic trail running with holiday cheer, appealing to a wide range of runners. Visit the organization's website for the most recent information.

United States California San Diego

Race information

Website Registration
6 hr
Hill Climb 6hr
26 mi
Marathon
13 mi
1/2 Marathon
10 km
10k
Visit the organization's website for the most recent information.
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