Did not have this road highlighted on my map from any website... only took it as it was quckest rout from coast to santa rosa (triumph dealership) as well I was ok leaving the coast to make better time and the coast was busy and muggy that day.
The weather cleared as soon and I went inland and this road is the best kept secret, awesone vineyards and just hte right amount of turn but still able to maintain speed. There was some construction which meant stopping for short periods.
Start in Woodside H-84 to H-1, follow coast into SF 101, across Golden Gate, back to 1 and north. Cut across east to Windsor for a pit stop at BMW/Triumph dealer. North 101 to 128, 128 up to Mendocino.