A mountain hike to find some food

I wake up at 8:30 am and go into the kitchen to decide where I shall hike today. Sarah is already up and she makes me a grilled peanut butter and jelly pita for breakfast (she is eating one too). I study my book and decide I should hike north. I hike through Montara on Main Street, then cut across Highway 1 to Montara State Beach for a mile. The sand is a weird squishy pebbly texture and it is hard to walk through. I hike up broken stairs, cross Highway 1 and enter McNee State Park. I hike the Old San Pedro Mountain Road for 4.75 miles up a mountain called Mount Pacifica between Mount Montara and San Pedro Mountain. The hike follows a decrepit falling apart, once paved single lane road forming a spiral pattern as it ascends the mountain. I pass about five hikers and several mountain bikers, but I essentially have this mountain hike to myself. At the end of the trail, I emerge on the outskirts of Pacifica near the Linda Mar Park and Ride. I follow residential roads down out of the hills, then a "closed to cars" road until I get to the edge of Highway 1. I see the Safeway grocery store, so I buy veggie sausage links, Morning Star breaded chik patties (this is the only place I have been able to find them in California...none of the cities have them...odd), a lean cuisine flatbread entree, chocolate soymilk, tomatoes, sundried tomatoes, grapes, strawberries, and frozen spinach. I am now all set for Pescadero when I leave here (there is no grocery store in or around Pescadero). I have only walked 7.5 miles today, but with my groceries I make the decision to take the bus back to the hostel. It is 1:54 pm and I have just missed a bus. I wait for the 3:17 pm bus #294, but it doesn't come until 3:25 pm. Half a mile before the hostel we are stopped while the wreckage of a two-car accident is removed. It is incredible the damage an SUV can do to a convertible on the highway. The police drive the cars to the shoulder...and the SUV is dragging the bumper and trunk door to the convertible under it's front axel...yikes. I get off at the hostel at 3:40 pm, put away the food and make a flatbread "lunch." I socialize with the staff while I hang around the empty hostel. I go outside with a book I found on the hostel library shelf "90 minutes in Heaven" about a guy who supposedly dies, spends 90 minutes in Heaven and returns to Earth only to end up in about 2 years worth of intensive care in the hospital and a lifetime of pain. It was really the only book I could find to read. I read outside until the sun is below the horizon. I am cold and it is too dark to see, so I come inside and read at a corner chair in the living room. I take a break to cook my dinner and then I read until I finish the book at 10:31 pm. I shower and preheat my dorm room to 78 degrees (I am the only one in there tonight). Today's hike was incredible. I hiked through the mountains alone and although the view was nothing too spectacular, I enjoyed the physical challenge and the fact that I got a good taste of another part of the California coast today. I wasn't a big mileage day, but it was good nonetheless. I think about the miles I will have to skip farther up in northern California, where rivers and the lack of a support team will force me to skip some really remote areas. I am also planning on meeting my mother up in Portland, Oregon and I will have to keep an eye on the calendar when the date nears. I am saddened by the future missed miles, but somehow oddly okay with a few missed parts.

How many people have to hike through the mountains to get to the grocery store? in the USA?