Porthos | Contact Us Questions or comments? Porthos can be reached by any of the following means: Email info@porthos.com Phone 1.866.PORTHOS 415.454.2115 Fax 415.454.1548 Postal Mail Porthos, Inc. The Vineyard 4326 Redwood Hwy #300 San Rafael, CA 94903 Driving Directions to our Offices (Note: no public retail shop) From San Francisco: Take Hwy. 101 HEADING North Exit Lucas Valley / Smith Ranch Rd. Turn right (East) onto Smith Ranch Rd. After approx. .3 mile turn right at the first light: Redwood Highway Drive approx. .5 mile and you'll see our development, The Vineyard, on your left Take the second entrance left and drive to the back building (past the first few buildings nearest 101). Our office is located in a building at the southwest corner of this development with 4326 clearly written on the top of our structure. From Napa/Sonoma: Take Hwy. 101 HEADING SOUTH Exit Lucas Valley / Smith Ranch Rd. Curve around and head back under 101 headed East on Smith Ranch Rd. After approx. .3 mile turn right at the first light: Redwood Highway Drive approx. .5 mile and you’ll see our development, The Vineyard, on your left Take the second entrance left and drive to the back building (past the first few buildings nearest 101). Our office is located in a building at the southwest corner of this development with 4326 clearly written on the top of our structure.