Half marathons in California

22 upcoming half marathons in California. Filter by date, exact distance, or elevation.

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This calendar in numbers

This calendar currently lists 22 upcoming events, from Sep 26, 2026 to Aug 29, 2027. November is the busiest month, with 5 events scheduled. Events are spread across 18 different locations; San Diego hosts the most (3). Course distances range from 14 km to 21.1 km.