Brazen Almost New Year's Eve

Brazen Almost New Year's Eve 2025 is a trail-running weekend in Castro Valley, California, at Lake Chabot. The event offers three distances—1/2 marathon, 10K, and 5K—on trail courses around Lake Chabot. It benefits the East Bay Regional Parks Campership Program.

The organizer offers back-to-back races on Saturday, December 27, 2025, with a second day on New Year's Day, 2026, and runners can tackle both to earn the Brazen New Year Mega-Medal (each race requires separate registration). A Remote option is available for distance runners who can't attend in person. The atmosphere welcomes first-time trail runners and seasoned racers alike. Visit the organization's website for the most recent information.