From San Francisco or San Francisco International Airport

From the airport to the Golden Gate Bridge: As you leave the airport,
follow signs for Hwy 380 West to Hwy 280/San Bruno. Continue on
Highway 380 West and exit onto Highway 280 North. Follow Highway 280
until it merges with Hwy. 1 North (do NOT take the Hwy.1/Pacifica exit).
Follow Hwy.1/Hwy. 280 North and take the Hwy. 1/19th Avenue exit.
Follow Hwy.1/19th Avenue. After crossing Martin Luther King Jr. Dr.,
follow the signs for Hwy.1/Park Presidio Dr.and continue onto the Golden
Gate Bridge.

From the Golden Gate Bridge to the Trojan Horse Inn:
Cross the Golden Gate Bridge, following Highway 101 North.
Exit onto Highway 37 (East) towards Vallejo/Napa and continue to the
second signal light (approx. 8 miles). Go LEFT at the light to go towards
Sonoma (Highway 121).  Eight and one-half miles later you will come to a 
flashing red light.  Bear RIGHT just before the flashing red light.  (By doing
this you are staying on Highway 121.)  Make a LEFT onto Highway 12. 
Continue along Highway 12 until a forms a "T" in front of Sonoma City Hall.
Make a LEFT in front of City Hall.  Continue for one mile.  You will see
the El Pueblo Hotel on your right, bear RIGHT and we are immediately across
the street on the left.