The closest town to the most westerly part of the state of California is Cape Mendocino. This area is located in the county of Humboldt and has been in existence since the 16th century, at least.
Yuma
Sutter's Fort, California. Closest modern day town = Coloma, CA
Quartzsite, Arizona, is the closest town to halfway between Mesa and Palm Desert.
Ca, Oregon & Washington. (West Coast)
The closest place I know of is in Roseville, Ca at Sunrise natural foods. Wish there was a closer place to down town.
The closest cities to Mt. Shasta are Weed and Dunsmuir. Weed is located south of Mt. Shasta and is known for its proximity to the mountain, while Dunsmuir is located to the north and offers scenic views of the mountain.
The closest Audi dealership to Mondesto CA is located at 3400 Las Positas, Livermore, CA, 94551. This dealership is about 42 miles away from Modesto CA.
The Santa Monica Pier in Santa Monica, CA. That's about as westward as you can go.
The closest city to Susanville, CA is Reno, NV, located approximately 90 miles to the northeast.
Ontatrio International Airport, CA
Big Island
closest national park to san diego?