Brazen New Year's Day

JAN
1
2027
Trail focused 5K, 10K, half marathon and virtual option at Lake Chabot on January 1, 2027 with varied surfaces and rolling hills.
Fri 1 Jan 2027
13 miles 10 kilometers 5 kilometers

Always double-check with the organizer's website! This page may contain affiliate links.

Brazen New Year's Day

Brazen New Year's Day is held on January 1, 2027 at Lake Chabot in Castro Valley, California (17600 Lake Chabot Road). The event offers in-person and virtual options across multiple distances.

  • 5K : entirely on paved trails; out-and-back course
  • 10K : about 50% paved trails and 50% dirt trails; out-and-back course
  • Half marathon (13.2 miles) : approximately 30% paved trails and 70% dirt trails; loop course
  • Remote Runner (virtual) : virtual participation option

All courses include rolling hills that are mostly runnable. The half marathon has a course time limit of 4.5 hours and requires participants to reach the aid station at mile 10.7 by 11:45 am.

Registration opens for all options on January 18, 2026. Registration for the 5K, 10K and half marathon closes on October 3, 2026; registration for the Remote Runner virtual option closes on December 5, 2026. Listed registration fees are $68 for the 5K, $77 for the 10K, $95 for the half marathon, and $50 for the Remote Runner option. Visit the organization's website for the most recent information.

Events nearby

Experience a flat and fast trail race through the scenic Quarry Lakes Regional Recreation Area in Fremont. Choose from a USATF certified half marathon, 10K, or 5K while enjoying views along the Alameda Creek Trail.
11th Annual Nomadic 5K Trail Run at Arbolado Park in Walnut Creek on November 21, 2026, a community 5K with a walk option, Mongolian food and kids activities.
A Thanksgiving Day vegan fundraiser at San Leandro Marina featuring a flat 5K, canicross with dogs, a 1 mile walk, and kids races supporting the Milo Foundation.
A community cross country fun run on the Gunn 2.2 mile course in Palo Alto with race morning registration and youth half lapper races.
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