Brazen Almost New Year's Eve

DEC
27
2025
Celebrate the season with Brazen Almost New Year's Eve at scenic Lake Chabot on December 27, 2025, and tackle trail miles. Choose a half marathon, 10K, 5K or remote option and earn a mega medal by registering for the New Year's Day race.
Sat 27 Dec 2025
Half Marathon 10 kilometers 5 kilometers

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

Event overview

Brazen Almost New Year's Eve 2025 is a trail running event on Saturday, December 27, 2025, at Lake Chabot in Castro Valley, California. The event site address is 17936 Lake Chabot Rd, Castro Valley, CA 94546. The event is part of a pair of Brazen events that also includes a separate New Year’s Day race on January 1, 2026; each race requires separate registration. Participants who register for both days receive the Brazen New Year Mega-Medal.

Race options

The event offers multiple distance options:

  • Half marathon
  • 10K
  • 5K
  • Remote option

There is a designated hiker start option for the half marathon for walkers who expect to take longer than 3.5 to 4 hours to complete the course.

Registration and fees

Registration is open with tiered pricing. Listed price ranges are:

  • 5K: about $74.84 to $85.52
  • 10K: about $84.45 to $95.12
  • Half marathon: about $103.66 to $114.34
  • Remote: about $61.34 to $72.09

Fees shown include mandatory charges and items. The event lists the Race Director as the event contact. The East Bay Regional Parks Campership Program is listed as a fundraising organization for the event. Visit the organization's website for the most recent information.

Half Marathon
Half Marathon
10 km
10k
5 km