The sun is rising on Thursday morning, January 1st, the first day of 2026. 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 12/27 and one on 1/1) and then brag to your friends: "It took me two years to finish that marathon"!
Registration fees
Prices are inclusive of mandatory charges, items, and fees
Half Marathon
Price changes in 9 months 1 day-
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Register for Half Marathon$103.66Now registering Oct 12 – Oct 2
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$109.00Oct 3 – Dec 4
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$114.34Dec 5 – Dec 1
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10K
Price changes in 9 months 1 day-
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Register for 10K$84.45Now registering Oct 12 – Oct 2
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$89.79Oct 3 – Dec 4
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$95.12Dec 5 – Dec 1
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5K
Price changes in 9 months 1 day-
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Register for 5K$74.84Now registering Oct 12 – Oct 2
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$80.18Oct 3 – Dec 4
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$85.52Dec 5 – Dec 1
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Remote Runner
Price changes in 9 months 1 day-
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Register for Remote Runner$60.96Now registering Oct 12 – Oct 2
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$66.30Oct 3 – Dec 1
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Event schedule
- Thu, January 1, 2026 7:30 AM - Hiker start (for those walking the half marathon, planning to take longer than 3.5-4 hours)
- Thu, January 1, 2026 8:30 AM - Half Marathon
- Thu, January 1, 2026 8:55 AM - 10K
- Thu, January 1, 2026 9:10 AM - 5K
Contact information
- Event contact
- Race Director
- Website
- Visit website
