Signs From California

CA-37 west to San Rafael approaching CA-121 north to Sonoma and the Infineon Raceway.

CA-37 - San Rafael overhead on CA-37 west.

CA-37 west at Exit 17 - Mare Island.

CA-37 west at Exit 18 - Wilson Ave./Sacramento St. Approaching Exit 17 - Mare Island.

CA-37 west at Exit 19 - CA-29/Napa/Sonoma Blvd. Approaching Exit 18 - Wilson Ave./Sacramento St. CA-37 continues west towards San Rafael.

CA-37 west approaching Exit 20 - Discovery Kingdom/Fairgrounds Drive. Use Exit 20 for the Six Flags Discovery Kingdom theme park.

I-80 west at Exit 33 - CA-37/Novato/San Rafael. CA-37 crosses the north end of San Pablo Bay, connecting US-101 (Novato) and I-80 (Vallejo).

I-80 west at Exit 36 - American Canyon Road. American Canyon Road connects I-80 with CA-29 in Napa County.

I-80 west at Exit 39A - Red Top Road.

I-80 west at Exit 39B - CA-12 West/Napa/Sonoma. Approaching Exit 39A - Red Top Road. CA-12 west leaves I-80 here, and crosses into the Napa Valley. I-80 continues west towards Vallejo and San Francisco.