Running Races in Castro Valley, California

Racing in Castro Valley: what the calendar looks like

There are 10 upcoming races on the Castro Valley calendar over the next 12 months, with race dates in 8 of the next 12 months. January is the busiest month, with 3 races. By race count, Castro Valley ranks 16th among California cities.

Of those, 10 offer a Half Marathon, 8 offer a 5K and 6 offer a 10K. The next marathon on the calendar is Lake Chabot Trail Run on November 7, which also runs a half marathon. Where fees are published, the median entry in Castro Valley is $50, above the California median of $30.

Close enough for a race-day drive: Oakland (9 races, 10 miles), Alameda (17 races, 11 miles), Fremont (7 races, 11 miles).

Races by month

• Nov 20261 race
• Dec 20261 race
• Jan 20273 races
• Feb 20271 race
• Apr 20271 race
• Jun 20271 race
• Jul 20271 race
• Aug 20271 race

Where to stay in Castro Valley

Race-weekend hotel search, dates prefilled for check-in the night before.

• Nov 7Lake Chabot Trail RunFind hotels for this race weekend
• Dec 31Brazen New Year's Eve 2026Find hotels for this race weekend
• Jan 1Brazen New Year's DayFind hotels for this race weekend

Hotel links are affiliate links. Booking through them costs you nothing extra and helps keep RunRace USA free.

Planning a race

• Getting inlotteries, qualifiers, and how entry works for the races that sell out
• Lottery watchwhich race lotteries and registration windows are open right now
• Choosing a first marathona practical guide to picking a debut race

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