Trefethen is located at the southern end of the Napa Valley and is the first winery you see after leaving the city of Napa. Start your visit to the Napa Valley at Trefethen!

Address: 1160 Oak Knoll Avenue, P.O. Box 2460, Napa, CA 94558.

Telephone: 707.255.7700           Fax: 707.255.0793

Email: Trefethen Vineyards

Hours: Open daily from 10:00 to 4:30.

Tastings: Estate Tasting - $10. ~ Reserve Tasting - $20.

Tours: By appointment. Tours of our historic winery are approx. 30 minutes.

Directions: Trefethen is 75 minutes north of San Francisco. 

From Oakland or San Francisco via the Bay Bridge, take Highway 80 east, through the city of Vallejo. At Marine World Parkway you will see the signs for Napa, exit here, Highway 37 west to the junction of Highway 29 turn right, north. Pass through the city of Napa on Highway 29. At the light at Oak Knoll Avenue, turn right, east. Trefethen will be on the left.

From Sacramento, take Highway 80 west to Highway 12, the exit will read Napa/Sonoma. At Highway 29 turn right, north, follow signs that read Calistoga. Continue north on 29 through the town of Napa until you reach the light at Oak Knoll Avenue. Turn right, east, and Trefethen will be on the left.

From Calistoga or St Helena, head south on Highway 29 to the light at Oak Knoll Avenue, turn left, east and Trefethen will be on the left. From the Silverado trail, just south of Clos du Val Winery, Oak Knoll Avenue will be on your right. Cross Big Ranch Road and Trefethen will be on your right.