According to mapquest, I am 40 miles from Napa. You take 80 west, pass the bay bridge exit, then get on hwy 580, then bear right and follow signs to hwy 24. Then take the 51st/MLK exit. Bear right off the exit. Then as you turn right onto 51st, immediately get in your lefthand lane, so you can turn left at the first light onto Shattuck Ave. Go about 12 blocks. Turn left on 58th St. Go 1 block. I am on the near left corner (5740 Maccall St #C, corner of 58th St.)