Endurance Grid lists 5 races in Castro Valley, California, from November 2026 to June 2027.
The race calendar
The Castro Valley race calendar is busiest in January, April, and June. It covers a range of endurance sports — you'll find races in Running and Trail Running — so there's usually a race near you. Distances span a wide range across those sports; you'll see Half Marathon, 5K, 8K / 5 Mile, Marathon, and 50K, along with other popular distances.
Weather on race day varies by time of year, so it lives where it’s accurate — each race page shows that race’s typical high, low, and rain chance from NOAA climate normals for its venue and date.
City Elevation
393 ft
Nearest Airport
OAK
San Francisco Bay Oakland International Airport
Time Zone
Pacific Time
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Explore and filter upcoming endurance races in Castro Valley, California on the map below — by sport, distance, price, or month.
Just Outside Castro Valley
Frequently Asked Questions (FAQs)