I started walking the streets of San Francisco back in the fall of 2009 and plowed through 500 miles of the 1000 or so miles of city streets by mid-2012. And then I moved away. :(
BUT! Every so often, I fly back to the City to visit and each time I do, I squeeze in walks to keep chipping at my goal. On recent visits, I've tooled around Outer Sunset, Inner Richmond, the Tenderloin, and Golden Gate Park which I have added to my master map. As of this moment, I have walked a total of 604.6 miles. Go me!