Brazen New Year's Eve

Castro Valley, United States • 31 Dec 2026

Brazen New Year's Eve : Lake Chabot, Castro Valley

The event is organized by Brazen Racing and is held at Lake Chabot in Castro Valley, California on December 31, 2026. The program offers multiple distances on the park trails and welcomes hikers and walkers.

  • Half marathon
  • 10K
  • 5K

The course uses trails at Lake Chabot. Race results are posted online and free photos are provided by volunteer photographers. Volunteer opportunities are available for those who wish to assist.

Participants have the option to run a reversed course the next day and earn a Brazen New Year Mega-Medal. A separate option called the Brazen New Year Marathon consists of two half marathons, one on December 31 and one on January 1, completed as a combined effort across the two days.

Sponsors support the event and contribute to its operation. Event information pages include course details, frequently asked questions, results, and photo galleries. Visit the organization's website for the most recent information.

Race information

13 mi
Half Marathon
10 km
10k
5 km
Visit the organization's website for the most recent information.
Trail runs nearby

A trail running event at Point Pinole on May 30, 2026, offering a half marathon, 10K and 5K. The original Brazen Racing event welcomes runners and walkers and includes bib pickup, posted results, free photos and volunteer roles.

Experience a technical trail race through the redwood groves of Joaquin Miller and Redwood Regional parks. Choose from multiple distances ranging from an 8K to a 50K ultra marathon on accurately measured courses.

A community 5K and 10K run/walk at Seal Point Park in San Mateo on May 30, 2026, paired with a complimentary Wellness Fair. Race registration includes a t-shirt and finisher medal and team entries are eligible for a prize.

A multi-distance trail event at Calero County Park in San Jose on May 30, 2026, featuring single track, dirt paths and hilly terrain up to 50K, with aid stations, free parking and drop bag support for the 50K.

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