CA-37 East at CA-121
CA-37 east at CA-121 to Napa and Sonoma. Continue east on CA-37 for Vallejo and Sacramento (via I-80).
CA-37 East Approaching CA-121
CA-37 East Approaching CA-121 to Napa, Sonoma, and (Sonoma) Raceway.
CA-37 West at CA-121
CA-37 west at CA-121
CA-37 West Approaching CA-121
CA-37 west to San Rafael approaching CA-121 north to Sonoma and the Infineon Raceway.