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.
Better yet, make sure you run at the Brazen New Year's Eve race and then you can start 2026 with the highly coveted New Year Mega Medal! Learn about our Brazen New Year's Eve race here.
Take it even one step higher by running both half marathons (one on 12/31 and one on 1/1) and then brag to your friends: "It took me two years to finish that marathon"!
Registration fees
Where pricing applies, shown amounts include mandatory charges, items, and fees.
Half Marathon
Price changes in 1 month 11 days-
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Register for Half Marathon$109.00Now registering Oct 3 – Dec 4
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$114.34Dec 5 – Dec 1
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10K
Price changes in 1 month 11 days-
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Register for 10K$89.79Now registering Oct 3 – Dec 4
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$95.12Dec 5 – Dec 1
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5K
Price changes in 1 month 11 days-
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Register for 5K$80.18Now registering Oct 3 – Dec 4
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$85.52Dec 5 – Dec 1
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Remote Runner
Registration closes in 1 year 1 month-
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$60.96Jan 18 – Oct 2
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Register for Remote Runner$66.30Now registering Oct 3 – Dec 1
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HIKER DIVISION
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Register for HIKER DIVISION95Jan 18 - Dec 1
Event schedule
- Fri, January 1, 2027 7:30 AM - Hiker start (for those walking the half marathon, planning to take longer than 3.5-4 hours)
- Fri, January 1, 2027 8:30 AM - Half Marathon
- Fri, January 1, 2027 8:55 AM - 10K
- Fri, January 1, 2027 9:10 AM - 5K
Contact information
- Event contact
- Race Director
- Website
- Visit website
