The Groin is a popular surf spot that is between Bolinas Beach and Stinson Beach. Waves break outside the channel and can continue all the way through the inside. There are mostly left breaking wave on the Bolinas side and right breaking waves on the Stinson side, though different swell directions can deliver all types of waves. The spot is ideal for longboarding since the bay is protected from most swells. Crowds from the Bay Area are guaranteed on weekends as well as surf classes, and lots of locals.


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