DIRECTIONS
The park is located 5 miles north of St. Helena and 4 miles south of Calistoga on Highway 29/128. From the south: Near the coast: Take Hwy 101 north to Hwy 37 at Novato, go east on Hwy 37 to Hwy 121, go north on Hwy 121 to Hwy 29 near Napa, go north on Hwy 29 to the park entrance. Inland: Take I-5 north to I-580, west on I-580 to I-680, north to I-780, north to I-80, east to Hwy 37, west to Hwy 29, then north on Hwy 29 to the park entrance. From the north: Near the coast: Take Hwy 101 south to Calistoga exit, go east on Mark West Rd, continuing on Porter Creek Rd to Petrified Forest Rd, turn left, go to Hwy 128, turn right and follow Hwy 128 past Calistoga to the park entrance. Inland: Take I-5 south to Hwy 20, west to Hwy 53, south to Hwy 29 at Lower Lake, then south on Hwy 29 to the park entrance. From the east: Take I-80 to Hwy 12, go west to Hwy 29, then north to the park entrance.