Take I-80 West to Hwy. 12 West (Napa exit); follow Hwy. 12 (4.5) miles to the first stop light; entrance on left
From San Francisco
Take I-80 East toward Sacramento; take the Red Top road exit (approximately 5 miles past Vallejo); turn left on Red Top road; proceed under the highway; turn right onto Frontage road and proceed to the stop sign across the railroad tracks (Hwy. 12); turn left onto Hwy. 12 (West); follow Hwy. 12 (4.3) miles to first stop light, entrance on left.
From the East Bay
Take I-680 North to I-80 (Napa/S.F. exit); take I-80 West toward San Francisco; exit on Hwy. 12 West (Napa); follow Hwy. 12 (4.5) miles to the first stop light, entrance on left.
From Marin County
Take Hwy. 101 North to Hwy. 37 (Vallejo/Napa exit); take Hwy. 37 East to Hwy. 29 (in Vallejo); turn left (North) onto Hwy. 29; follow Hwy. 29 approximately (7) miles to Hwy. 12 (East); turn right on Hwy. 12; follow Hwy 12 (1.3) miles to the second light, entrance on the right.