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Dirty December Trail Run

San Diego, United States • 20 Dec 2026

Dirty December Trail Run

Dirty December Trail Run takes place Sunday, Dec 20, 2026 in San Diego, CA. The event features multiple race options and a holiday theme.

  • Marathon
  • 1/2 Marathon
  • 10K
  • Hill Climb 6HR using repeated 2.5 mile up and down laps

A costume contest is part of the event with two award categories: solo costume and team costume. The event is described as a low key holiday trail run, with awards for costume winners.

The new Hill Climb 6HR race challenges participants to complete as many 2.5 mile laps as possible within six hours. Lapped distances progress in 2.5 mile increments, for example 2.5, 5, 7.5, 10 miles and so on. Winners of the hill climb receive King and Queen of the hill awards.

Registration closes on Fri, Dec 18 at 11:59 PM PT. 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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