Do: Take a Bicycling Tour of the City San Francisco is one of the most cyclist-friendly cities in the country. You'll find most extensive bike trails Golden Gate Park and the Presidio, but cycling enthusiasts can explore just about anywhere in the city by bike. See a detailed map of trails here.
Stay: W Hotel San Francisco You can avoid the hassle of renting your wheels by staying at the sleek, hipster-luxe W, which loans Puma Biomega bikes to guests for free (and has particularly fancy bike parking.) The location in the SoMa museum district isn't particularly scenic, but you'll find a short bike path at At&T park to the southeast and free valet bike parking (yes, you read that correctly) during Giants home games. To the southwest, you'll find the excellent trails at Golden Gate Park.