Brazen New Year's Day

JAN
1
2027
A New Year's Day running event at Lake Chabot in Castro Valley offering 5K, 10K and a half marathon. The half marathon is part of the Brazen Ultra Half Series and the event includes bib pickup, free photos, results and volunteer options.
Fri 1 Jan 2027
Half Marathon 10 kilometers 5 kilometers

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Brazen New Year's Day

Brazen New Year's Day is a running event at Lake Chabot in Castro Valley on January 1, 2027. The event offers a family-friendly fun run atmosphere and courses that run around Lake Chabot.

Distances offered include:

  • Half marathon
  • 10K
  • 5K

The half marathon is part of the Brazen Ultra Half Series. That series features half marathon courses that are often longer than 13.1 miles and include notable ascents, descents and sections of varied trail terrain.

Event services and logistics mentioned for participants include bib pickup, free photos provided by volunteer photographers, posted race results, and volunteer opportunities. Sponsors support the race; one named sponsor is GU.

Participants who run both the Brazen New Year's Eve race and the Brazen New Year's Day race are eligible for a New Year Mega Medal. Runners who complete the half marathon on December 31 and the half marathon on January 1 will cover the marathon distance across two days. Visit the organization's website for the most recent information.

Half Marathon
Half Marathon
10 km
10k
5 km
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