From SFBC:
Whether you're a Reid Brothers fan, a Richmond District history hound, or just fancy a nice ride around the neighborhood, come along on this non-athletic, non-academic architecture bike tour. From the turn of the 20th Century through its first few decades,James and Merritt Reid designed an impressive number of San Francisco's buildings, from theaters to hotels, office towers to townhouses, bandshells to barns. We'll take a look at nine of the Reids' Richmond District projects that help round out the collection. 2 hour ride, longer if we're having fun; have a big lunch beforehand, we'll stop somewhere for a snack.
SF Bicycle Coalition recreational rides are free for SF Bicycle Coalition members (a $5 donation from non-members is appreciated); rain cancels rides.