Brazen New Year's Day

Castro Valley, United States • 1 Jan 2026

Brazen New Year's Day is an annual running event held at Lake Chabot in Castro Valley, California. It offers participants the choice of a half marathon, 10K, or 5K race, all set on scenic trails around the lake. The event is known for its invigorating course featuring challenging ascents and descents, making the half marathon part of the Brazen Ultra Half Series. It provides a family-friendly atmosphere to start the new year actively and includes special features like the New Year Mega Medal for those who also run the Brazen New Year's Eve race. The event encourages runners to kick off their resolutions with a rewarding trail experience. Visit the organization's website for the most recent information.

Race information

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