Brazen New Year's Day

Castro Valley, United States • 1 Jan 2027

Brazen New Year's Day

Brazen New Year's Day is a multi-distance road and trail event held at Lake Chabot in Castro Valley on January 1, 2027. The event features a family-friendly fun run atmosphere and routes that circle or use trails around the lake.

Distances offered include:

  • Half marathon
  • 10K
  • 5K

The half marathon is included in the Brazen Ultra Half Series. That series comprises half marathons that frequently measure longer than 13.1 miles and are characterized by significant ascents, descents, and varied trail terrain. Course details, frequently asked questions, and bib pickup information are provided for participants.

Event services and amenities noted include post-race results and free photos supplied by volunteer photographers. Volunteer opportunities are available to support the event. Sponsors contribute to the race and help reduce entry costs through their support. Visit the organization's website for the most recent information.

Race information

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

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Held May 3, 2025 at Almaden Quicksilver County Park, this trail event offers distances from a kids run to 50K on dirt roads and single track, with marked courses, multiple aid stations, drop bag service at the Hacienda and free parking.

Experience the scenery of Tilden Regional Park at the Grizzly Peak Trail Run. Choose from various distances including a 50K and marathon starting from the shores of Lake Anza in Berkeley.

Trail ultramarathons in Almaden Quicksilver County Park on May 9 2026, offering a 100K and a 50K with substantial elevation gain, course maps and GPX files, USATF sanctioning, aid stations, volunteer support, swag and a post race party.

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