It is a myth that Gays are nothing but bar crazed sex maniacs. I mean we like to go camping, hiking, boating too, and there are actually a fair number of clubs out there, specializing in those activities, for Gays.
Kind of nice to know, and well this one is one of those.
Find the area you interested in, then get a whole lot more information, including some pictures of all the fun you can have in the outdoors in a place like California.
Personally I like the Orange County Long Beach one, but there are others.