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 12/31/2025, this is your chance.
Note: This year we will have almost back-to-back events at Lake Chabot, Castro Valley with a 5K, 10K and half marathon!
ALMOST New Year's Eve, Saturday, 12/27/2025
New Year's Day, Thursday, 1/1/2026*
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.
Registration fees
Prices are inclusive of mandatory charges, items, and fees
NYE 5K
Price changes in 30 days 14 hours-
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$74.84Jan 1 – Sep 28
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Register for NYE 5K$80.18Now registering Sep 29 – Nov 30
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$85.52Dec 1 – Dec 27
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NYE 10K
Price changes in 30 days 14 hours-
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$84.45Jan 1 – Sep 28
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Register for NYE 10K$89.79Now registering Sep 29 – Nov 30
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$95.12Dec 1 – Dec 27
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NYE Half Marathon
Price changes in 30 days 14 hours-
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$103.66Jan 1 – Sep 28
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Register for NYE Half Marathon$109.00Now registering Sep 29 – Nov 30
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$114.34Dec 1 – Dec 27
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NYE Remote
Price changes in 30 days 14 hours-
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Register for NYE Remote$61.34Now registering Jan 1 – Nov 30
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$72.09Dec 1 – Dec 27
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Event schedule
- Sat, December 27, 2025 7:30 AM - NYE Hiker start (for those walking the half marathon, planning to take longer than 3.5-4 hours)
- Sat, December 27, 2025 8:30 AM - NYE Half Marathon
- Sat, December 27, 2025 8:55 AM - NYE 10K
- Sat, December 27, 2025 9:10 AM - NYE 5K
Contact information
- Event contact
- Race Director
- Website
- Visit website
