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Castro Valley, CA

Brazen New Year's Eve

  • Date
  • First start8:30 AM PST
  • Location17600 Lake Chabot Road, Castro Valley, CA 94546
  • Distances5K · 10K · Half Marathon
  • SurfaceTrail
  • SwagNYE Race Shirt

Bib Scout Report

  • Trail
Events, current fees, and scheduled price increases
EventDistanceStartCurrent feeNext increase
NYE 5K5K9:10 AM PST$73$78 on
NYE 10K10K8:55 AM PST$82$87 on
NYE HALF MARATHONHalf Marathon8:30 AM PST$100$105 on

Scouted from the official RunSignup listing. Fees shown exclude processing fees. Merit badges are detected from the organizer’s description. Dates, courses, and prices can change — confirm on the registration page.

About Brazen New Year's Eve

Whether you're looking to squeeze in your first trail run or you're looking to log that 1,000th mile before the clock strikes midnight on 12/31/2026, this is your chance. Note: This year we will have back-to-back events at Lake Chabot, Castro Valley with a 5K, 10K and half marathon! New Year's Eve, Thursday, 12/31/2026 New Year's Day, Friday, 1/1/2027* Make it a double and join us both days and earn the Brazen New Year Mega-Medal! *Note: Each race is a unique event on its own and requires separate registration.

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