Brazen New Year's Day

JAN
1
2027
Multi-distance trail races at Lake Chabot across New Year's Eve and New Year's Day, including 5K, 10K, a half marathon and a virtual option.
Fri 1 Jan 2027
13 miles 10 kilometers 5 kilometers

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Brazen New Year's Eve and New Year's Day

Events take place at Lake Chabot in Castro Valley, California, at 17600 Lake Chabot Road. The schedule spans New Year's Eve, 12/31/2026, and New Year's Day, 1/1/2027, with both in-person and a virtual remote option.

Distances offered:

  • 5K
  • 10K
  • 13.2 Miles (half marathon)
  • Remote runner (virtual)

Course details differ by distance. The 5K is entirely on paved trails. The 10K is roughly 50% paved trails and 50% dirt trails. The half marathon is approximately 30% paved trails and 70% dirt trails. The 5K and 10K are essentially out-and-back courses, while the half marathon is essentially a loop. All courses include rolling hills that are mostly runnable.

The half marathon course has a time limit of 4.5 hours. Half marathon participants must reach the aid station at mile 10.7 by 11:45 am. Events on consecutive days are presented as separate races; each race requires its own registration. Completing events on both days is associated with earning the Brazen New Year Mega-Medal. Visit the organization's website for the most recent information.

Events nearby

A fundraiser in Joaquin Miller Park featuring a 5 km trail race and a 1 mile fun run to support Oakland Tech PTSA and student programs.
Trail and running events around Lake Chabot reservoir in Castro Valley, with distances from a 50 yard kids dash up to a 50K.
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.
Nomadic Adventure Club's 11th annual 5K trail run at Arbolado Park in Walnut Creek with family activities and Mongolian food after the event.
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