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 race in El Sobrante on May 16, 2026 offering Half Marathon, 10K and 5K distances plus a remote runner option. Tiered registration fees apply and the event supports the East Bay Regional Parks Campership Program.

A point-to-point Half Marathon on May 16, 2026 in Almaden Quicksilver County Park, running from Mt. Umunhum down to the Hacienda Entrance with 1,909 ft of ascent, marked ribbons, aid stations and a 5.5-hour time limit.

Nitro Trail on May 30, 2026 at Point Pinole Regional Shoreline Park features a half marathon, 10K and 5K plus a remote runner option. A hiker start is available for half marathon walkers and the event supports a parks campership program.

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.

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