Endurance Grid lists 7 swimruns in California, from September 2026 to June 2027 across 7 cities.
The swimrun race calendar in California is busiest in October, April, and May, with races most often in Bakersfield, Santa Cruz, and Ventura.
SwimRun is a continuous race that alternates open-water swimming and running across a series of back-to-back segments, stringing together stretches of water and land — sometimes along a shoreline, sometimes island to island. Some events are simply a swim followed by a run, often sharing a course with a triathlon.
There is not always a bag drop or changing area, so you may swim in your shoes and run in your wetsuit, carrying every piece of gear the whole way. Many SwimRun events are raced in pairs.
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