10K races in California — October 2026
37 upcoming 10K races in California during October 2026.
Browse by state
Other months in California
This calendar in numbers
This calendar currently lists 37 upcoming events, from Oct 3, 2026 to Oct 31, 2026. October is the busiest month, with 37 events scheduled. Events are spread across 26 different locations; San Jose hosts the most (3). Course distances range from 5 km to 10 km.