It's east of Monterey:

Directions Marina is within 10 miles of Pacific Grove, the Monterey Aquarium, and Laguna Seca. With no traffic, it is about 2 hours from the heart of the Bay Area. Take Highway 1 south of Castroville toward Laguna Seca Raceway and Monterey. Take the Reservation Road exit south toward Marina. After one short block, turn right in order to stay on Reservation Road. Follow the road through Marina and approximately two miles south of town. Turn left at signal into Marina Airfield. Turn right after the first large building on the right and follow the cones to the autocross site. You will be stopped prior to entering the site and asked to sign a release. This is an operating airport, and they have very specific rules on where you can drive, and not drive. Please follow the instructions exactly, even if you are directed to drive across dirt, when there is a paved road nearby. The paved area is a taxiway, and forbidden to automobile traffic. Failure to obey these rules could cost us the use of this site.