Upcoming Races Near Castro Valley, CA in December, 2025

Name: New Year's One Day
Start: 2025-12-31
End: 2025-12-31
Location: San Jose

2025 Golden Gate Half Marathon & 5K

San Francisco, CA

Sunday, November 2nd, 2025

Featured

Half

View details for race 2025 Golden Gate Half Marathon & 5K

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The Krampus Cross Country 5K, 10K, or Naughty N...

San Francisco, CA

Friday, December 5th, 2025

10K

Trail

Fast

View details for race The Krampus Cross Country 5K, 10K, or Naughty Nine Miler (LIVE or VIRTUAL)!

15th Annual Reindeer Run/Walk

American Canyon, CA

Saturday, December 6th, 2025

10K

View details for race 15th Annual Reindeer Run/Walk

Midway Shelter Winter Run / Walk ~ 5k, 10k and ...

Alameda, CA

Saturday, December 6th, 2025

Trail

View details for race Midway Shelter Winter Run / Walk ~ 5k, 10k and Kids Run

ZombieRunner Quarry Lakes

Fremont, CA

Saturday, December 6th, 2025

10K

Half

Trail

Fast

View details for race ZombieRunner Quarry Lakes

49th Annual Holiday Run and Walk for Health

Antioch, CA

Saturday, December 13th, 2025

1 Mile

View details for race 49th Annual Holiday Run and Walk for Health

Santa Run Silicon Valley

San Jose, CA

Sunday, December 14th, 2025

Fast

View details for race Santa Run Silicon Valley

New Year's One Day

San Jose, CA

Wednesday, December 31st, 2025

Ultra

View details for race New Year's One Day

Explore more in Castro Valley, CA

Distances:

5K 10K Half Marathon Marathon

Months:

October November December

Tags:

Trail Boston Qualifiers Fast Courses

State:

All California races

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