Dirty December Trail Run

DEC
20
2026
Holiday trail event in San Diego on Dec 20, 2026 offering marathon, half marathon, 10K and a 6 hour hill climb with costume awards.
Sun 20 Dec 2026
Marathon Half Marathon 10 kilometers

Always double-check with the organizer's website! This page may contain affiliate links.

Dirty December Trail Run

The Dirty December Trail Run is scheduled for December 20, 2026 in San Diego, CA and is organized by Dirty Feet Productions. The event is described as a low-key holiday trail run that includes a costume contest with separate solo and team award categories.

Distances offered include:

  • Marathon
  • Half Marathon
  • 10K
  • Hill Climb 6HR: repeated 2.5 mile laps on Cardiac Hill

The new 6 hour hill-climb challenges participants to complete as many 2.5 mile laps as possible on Cardiac Hill. The event lists cumulative lap distances in 2.5 mile increments (for example 2.5, 5, 7.5, 10, and onward). Winners in the hill-climb receive special King and Queen of the hill awards.

Registration for the event closes on Fri, Dec 18 at 11:59 PM PT. The organizer provides online registration and event information through its event page. The race format combines fixed-distance options with a time-based hill-climb race and includes costume awards for solo and team entries. Visit the organization's website for the most recent information.

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

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