Thanks for the data! That's my recollection from when I lived in Berkeley and SF, too. I wonder about the Bay Area and Santa Cruz as opposed to, say, Los Angeles....

I think cycling and rock climbing are the shared hobbies of a lot of coders, including people who enjoy the exercise-y dimensions and -- especially for cycling -- the tinkering dimension. (There's that bit in the Jargon File mentioning the preponderance of hiking boots, quoting some other writer joking that hackers wear them "in case a mountain should suddenly spring up in the machine room.")