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Dirty December Trail Run

Name: Dirty December Trail Run
Start: 2026-12-20
End: 2026-12-20
Location: San Diego

San Diego, United States • 20 Dec 2026

Dirty December Trail Run

The Dirty December Trail Run is a holiday trail event held in San Diego, CA. The program includes a costume contest with two award categories: solo costume and team costumes. The event is presented as a low key community trail run.

Available race options include:

Marathon
1/2 Marathon
10K
Hill Climb 6HR

The Hill Climb 6 hour race uses a roughly 2.5 mile loop that goes down and then back up Cardiac hill. Competitors try to complete as many 2.5 mile laps as possible within six hours; lap distances progress in 2.5 mile increments. Winners in the Hill Climb receive King and Queen of the hill awards.

Registration for the event closes on Fri, Dec 18 at 11:59 PM PT. The organizer lists a website and social pages for the event. The description notes a new six hour race option alongside the standard marathon, half marathon, and 10K distances. Visit the organization's website for the most recent information.

United States California San Diego

Race information

Website Registration

Marathon

Half Marathon

1/2 Marathon

10 km

10k

Hill Climb 6hr

Visit the organization's website for the most recent information.

Trail runs nearby

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Black Mountain Trail Races

A trail race at Black Mountain in San Diego with 50K, 25K and a half marathon on June 20, 2026. The event follows Trail Sisters guidelines and features aid stations staffed by ham radio experts.

Fri - Sun Jul 24-26

South Bay 24

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Backyard Ultra

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A 24 hour endurance event at Montgomery Waller Community Park in San Diego on July 24, 2026. Runners loop a 1.22 mile course over trail, grass and bike path with formats from 6 hour to a HEFFTY Half Marathon and a $1500 purse prize.

Saturday Sep 26

Double Peak Challenge

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Lake Hodges Trail Festival

...

Experience a diverse weekend of trail running and off road duathlon at San Diego’s Scenic Lake Hodges. Choose from distances ranging from a kid’s mile to a 50K ultra marathon or tackle the mountain bike and run challenge.