Half marathons in California — September 2026
7 upcoming half marathons in California during September 2026.
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This calendar currently lists 7 upcoming events, from Sep 7, 2026 to Sep 27, 2026. September is the busiest month, with 7 events scheduled. Events are spread across 6 different locations; Auburn hosts the most (2). Course distances range from 11.3 km to 21.1 km.