When I first first joined salesforce.com I spent about 5 weeks in San Francisco and I have to say that this put me in the best running shape of my life. It wasnt anything that I had planned on but it really all came together. I combined running the hills with a steady diet of temp runs. Tempo/Interval training is something that always yields results. For me though the key was the hills. I think the hills got me stronger and kept me out running longer but not at the edge. I was fine with just getting up some of these and then enjoying the downhill and chance to pick it up. The other drive was to go a little further to see what was over the next hill. I did the BAA Half Marathon and was just a shade over 1:30.
All that preamble was to say that after a long day of work on Tuesday I got out for a run. I was pretty tired from the late night travel but once i got out I felt great. Something about the hills and the views is magical. I often wonder if the feeling would dissipate if I lived there, I dont think so. The closest comparison is the run around the Esplanade in Boston. Its always fun especially in the summer.