Brazen New Year's Day
Updated
Friday, January 1, 2027, first start 8:30 AM, in Castro Valley (17600 Lake Chabot Road). Distances: 5K, 10K, Half marathon. Entry from $73 to $100; the 5K goes from $73 to $78 after December 5.
- Date
- Friday, January 1, 2027
- Start time
- 8:30 AM (earliest wave)
- Location
- 17600 Lake Chabot Road, Castro Valley, CA 94546
- Area
- East Bay, SF Bay Area
- Distances
- 5K10KHalf marathon
- Course
- Trail (dirt or single-track on at least part of the course)
- Price
- $73 to $100 plus the platform's processing fee
- Next price increase
- Saturday, December 5, 2026: 5K $73 → $78
- Registration
- Open. Opened January 18, online signup closes Saturday, January 2, 2027
How to register
Registration is on RunSignup. Pick your distance, add any extras, and you'll get a confirmation email with your bib details. Sign up by December 5 to pay $73 instead of $78.
Register on RunSignup →Race website
Course and race notes
The sun is rising on Friday morning, January 1st, the first day of 2027. Where should you be? Pounding the trails of Lake Chabot, of course! Join us at Lake Chabot in Castro Valley for the scenic and invigorating 5K, 10K or half marathon.
From the race's own listing. Check the race website for the course map and parking.
Source: RunSignup public race API, refreshed 2026-10-17. Details can change; the registration page is the final word.